阅读说明：本技术 一种生物质多元耦合气化系统 (Biomass multi-element coupling gasification system ) 是由 王绍龙 石磊 姬爱民 张磊 于 2021-05-23 设计创作，主要内容包括：本发明提供了一种生物质多元耦合气化系统,涉及生物质综合利用技术领域,解决了现有技术中不能够将热解气化技术与厌氧发酵技术结合互补应用以增加废弃生物质综合利用效率的技术问题。该生物质多元耦合气化系统包括高温厌氧发酵子系统、热解气化子系统、生物质能源利用子系统、余热回收利用子系统、生物质能源存储子系统、生物质余料利用子系统以及烟气净化排放子系统。本发明的生物质多元耦合气化系统将热解气化技术与厌氧发酵技术结合互补应用,增加了废弃生物质综合利用效率。(The invention provides a biomass multi-element coupling gasification system, relates to the technical field of comprehensive utilization of biomass, and solves the technical problem that the comprehensive utilization efficiency of waste biomass cannot be increased by combining and complementarily applying a pyrolysis gasification technology and an anaerobic fermentation technology in the prior art. The biomass multi-element coupling gasification system comprises a high-temperature anaerobic fermentation subsystem, a pyrolysis gasification subsystem, a biomass energy utilization subsystem, a waste heat recovery utilization subsystem, a biomass energy storage subsystem, a biomass excess material utilization subsystem and a flue gas purification and emission subsystem. The biomass multi-element coupling gasification system combines and complementarily applies the pyrolysis gasification technology and the anaerobic fermentation technology, and increases the comprehensive utilization efficiency of the waste biomass.)

1. The utility model provides a many first coupling gasification systems of living beings, its characterized in that, includes high temperature anaerobic fermentation subsystem, pyrolysis gasification subsystem, biomass energy utilizes subsystem, waste heat recovery utilizes subsystem, biomass energy storage subsystem, living beings clout and utilizes subsystem and flue gas purification emission subsystem, wherein:

the high-temperature anaerobic fermentation subsystem carries out anaerobic fermentation on wet biomass by utilizing the heat output by the waste heat recycling subsystem and the secondary high-temperature flue gas, outputs biogas to the biomass energy utilization subsystem for combustion and/or outputs biogas to the biomass energy storage subsystem for storage, and outputs biogas slurry and biogas residues to the biomass excess material utilization subsystem for preparing organic fertilizer;

the pyrolysis gasification subsystem carries out pyrolysis by utilizing dry biomass, outputs biomass gas to the biomass energy utilization subsystem for combustion, and/or outputs the biomass gas to the biomass energy storage subsystem for storage, and outputs biomass carbon to the biomass excess material utilization subsystem for producing organic fertilizer;

the biomass energy utilization subsystem works by utilizing biomass gas output by the pyrolysis gasification subsystem and/or mixed gas output by the biomass energy storage subsystem, and outputs heat and secondary high-temperature flue gas to the waste heat recycling subsystem;

the waste heat recycling subsystem absorbs the heat output by the biomass energy utilization subsystem and the secondary high-temperature flue gas to supply to the high-temperature anaerobic fermentation subsystem for anaerobic fermentation, and provides hot water for hot water users;

the biomass energy storage subsystem purifies and stores the biogas output by the high-temperature anaerobic fermentation subsystem and the biomass gas output by the pyrolysis gasification subsystem, and can output mixed gas for the biomass energy utilization subsystem to use;

the biomass excess material utilization subsystem receives biogas slurry and biogas residues output by the high-temperature anaerobic fermentation subsystem and biomass carbon output by the pyrolysis gasification subsystem to produce organic fertilizer;

and the flue gas purification and emission subsystem purifies the room-temperature flue gas exhausted by the waste heat recovery and utilization subsystem and then emits the purified room-temperature flue gas into the atmosphere.

2. The biomass multi-coupling gasification system according to claim 1, wherein the high-temperature anaerobic fermentation subsystem comprises a wet storage bin, a seasoning tank, a first slurry pump, an acidification tank, a second slurry pump, a fermentation tank, a solid-liquid separator, and a biogas liquid tank and a biogas residue tank which are respectively connected with the solid-liquid separator, wherein the high-temperature anaerobic fermentation subsystem has the following working procedures:

wet biomass firstly enters the wet stock bin for storage, then the wet biomass enters the seasoning tank and is added into biogas slurry output from the biogas slurry tank and water added outside the system for blending to form mixed slurry, the mixed slurry is conveyed to the acidification tank through the first slurry pump for acidification treatment to form acidification liquid, the acidification liquid is conveyed to the fermentation tank through the second slurry pump for high-temperature anaerobic fermentation, biogas generated by the high-temperature anaerobic fermentation enters the biomass energy storage subsystem for purification and storage, biogas slurry and biogas residue mixed liquid generated by the high-temperature anaerobic fermentation enters the solid-liquid separator for solid-liquid separation to output biogas slurry and biogas residue, the biogas slurry enters the biogas slurry tank, and the biogas residue enters the biogas residue tank.

3. The biomass multi-coupling gasification system according to claim 2, wherein the waste heat recovery subsystem comprises an acidification tank jacket, an acidification tank heat exchanger, a fermentation tank jacket, a fermentation tank heat exchanger, a water storage tank, a steam boiler heat exchanger and a waste heat boiler heat exchanger, wherein:

the acidification tank jacket is arranged on the outer layer of the acidification tank in a wrapping manner, and the acidification tank heat exchanger is arranged in the acidification tank jacket; the fermentation tank jacket is arranged on the outer layer of the fermentation tank in a wrapping mode, and the fermentation tank heat exchanger is arranged in the fermentation tank jacket; the steam boiler heat exchanger and the waste heat boiler heat exchanger are respectively arranged in the biomass energy utilization subsystem and absorb heat generated in the biomass energy utilization subsystem; the acidification tank heat exchanger, the fermentation tank heat exchanger water storage tank, the steam boiler heat exchanger and the waste heat boiler heat exchanger are sequentially connected to form a first water circulation loop, so that heat in the biomass energy utilization subsystem is transferred into the high-temperature anaerobic fermentation subsystem, and the high-temperature anaerobic fermentation subsystem is assisted to perform high-temperature anaerobic fermentation; the water storage tank is connected with a hot water user to form a second water circulation loop, and hot water is provided for the hot water user.

4. The biomass multi-element coupling gasification system according to claim 3, wherein the pyrolysis gasification subsystem comprises a dry material bin, a spiral feeder, a gasification furnace, an air blower connected with the gasification furnace, a spiral discharger connected with the gasification furnace, a discharge tank, a first induced draft fan connected with the gasification furnace, and a cyclone dust collector connected with the first induced draft fan, which are arranged in sequence, wherein the working process of the pyrolysis gasification subsystem is as follows:

the dry biomass firstly enters the dry material bin for storage, the dry biomass is conveyed into the gasification furnace through the spiral feeder, the air blower supplies air to the gasification furnace, the gasification furnace is ignited for pyrolysis and gasification to generate biomass gas and biomass carbon, the biomass gas is dedusted by the cyclone dust collector and then conveyed to the biomass energy utilization subsystem for combustion and utilization, and/or the biomass gas is conveyed into the biomass energy storage subsystem for purification and storage, and the biomass carbon is conveyed to the discharge tank for cooling and storage through the spiral discharge device.

5. The biomass multi-coupling gasification system according to claim 4, wherein the biomass energy utilization subsystem comprises a combustor, a steam boiler and a waste heat boiler, the steam boiler is provided with the steam boiler heat exchanger, the waste heat boiler is provided with the waste heat boiler heat exchanger, and the biomass energy utilization subsystem has the following working procedures:

the combustor utilizes the biomass gas output by the pyrolysis gasification subsystem for cooking users; when the biomass gas output by the pyrolysis gasification subsystem is insufficient to support the normal work of the combustor, the biomass energy storage subsystem provides mixed gas for the combustor to combust;

the steam boiler utilizes the biomass gas output by the pyrolysis gasification subsystem to heat the heat exchanger of the steam boiler and outputs residual high-temperature flue gas; when the biomass gas output by the pyrolysis gasification subsystem is insufficient to support the normal operation of the steam boiler, the biomass energy storage subsystem provides mixed fuel gas for the steam boiler;

the waste heat boiler heats the waste heat boiler heat exchanger by using the residual high-temperature flue gas and outputs secondary high-temperature flue gas; and the secondary high-temperature flue gas is respectively input into the fermentation tank interlayer and the acidification tank interlayer to assist the high-temperature anaerobic fermentation subsystem in carrying out anaerobic fermentation.

6. The biomass multi-coupling gasification system according to claim 5, wherein the biomass energy storage subsystem comprises a dehydrator, a desulfurizing tank and a gas storage tank which are connected in sequence, and the working process of the biomass energy storage subsystem is as follows:

the dehydrator receives the biogas and/or biomass gas output by the cyclone dust collector and/or the fermentation tank, removes water, outputs the biogas and/or biomass gas to the desulfurizing tank for desulfurization, and inputs the biogas and/or biomass gas to the gas storage tank for storage; the gas storage tank can output mixed gas for the combustor and/or the steam boiler.

7. The biomass multi-element coupling gasification system according to claim 6, wherein the biomass excess material utilization subsystem is an organic fertilizer processing plant which can utilize biomass carbon output by the discharge tank, biogas slurry output by the biogas slurry tank and biogas residue output by the biogas residue tank to produce organic fertilizer together.

8. The biomass multi-coupling gasification system according to claim 7, wherein the flue gas purification emission subsystem comprises a desulfurization tower, a mist-water separator, a second induced draft fan and a chimney which are connected in sequence, and the work flow of the flue gas purification emission subsystem is as follows:

the fermentation tank jacket and the acidification tank jacket are respectively connected with the desulfurization tower, the cooled residual room-temperature flue gas is output to the desulfurization tower for desulfurization, then enters the mist-water separator for dehydration, is guided into the chimney through the second induced draft fan, and is finally discharged to the atmosphere.

9. The biomass multi-coupling gasification system according to claim 8, wherein the solid-liquid separator is selected from one of a centrifugal solid-liquid separator, a filtering solid-liquid separator or a squeeze-type filtering separator; the acidification tank heat exchanger, the fermentation tank heat exchanger, the steam boiler heat exchanger and the waste heat boiler heat exchanger are plate heat exchangers or tubular heat exchangers; the first induced draft fan and the second induced draft fan are roots fans; the burner is a gas stove; the dehydrator is a rotational flow plate type dehydrator.

10. The biomass multi-coupling gasification system according to claim 8, wherein the fluid transmission between the two devices is power transmission or unpowered transmission, wherein the power transmission is realized by a fluid pump and a pipeline.

Technical Field

The invention relates to the technical field of comprehensive utilization of biomass, in particular to a biomass multi-element coupling gasification system.

Background

In various new energy sources, nuclear energy and large-scale hydropower have potential ecological environment risks, and regional resource restrictions such as wind energy and geothermal heat are limited and questioned in vigorous development, while biomass energy is accepted by people due to the characteristics of universality, richness, reproducibility and the like. The uniqueness of biomass lies in that the biomass can store solar energy and also can be converted into conventional solid, liquid and gaseous fuels by using a renewable carbon source, and energy sources such as coal, petroleum, natural gas and the like are substantially converted from biomass energy.

Waste biomass consumption is an effective means for dealing with current biomass pollution and biomass energy waste, and through reasonable technical means, biomass is treated to obtain energy and solve the pollution problem, so that the waste biomass consumption is a main means for waste biomass consumption. Biomass digestion means are abundant, mainly comprise a physical method, a chemical method, a biological method and the like, wherein two technologies become mainstream, one is a biomass pyrolysis gasification method, waste biomass is used as a raw material, oxygen (air, oxygen-enriched oxygen or pure oxygen), water vapor or hydrogen is used as a gasifying agent, a combustible part in the biomass is converted into combustible gas through chemical reaction under a high-temperature condition, and the generated combustible gas is subjected to dust removal, decoking, cooling and purifying treatment and then is used for supplying gas for a gas user. And the other is a biomass anaerobic fermentation method, which takes waste biomass as a raw material, generates biogas through an anaerobic digestion technology, supplies gas to gas users after desulfurization and drying, and simultaneously generates biogas slurry and biogas residues which are also important raw materials for preparing organic fertilizers.

The biomass digestion method has been developed for years, the single technology of the biomass digestion method is basically mature, but the biomass digestion method still has certain limitations under the influence of the reaction mechanism of the biomass digestion method. For the pyrolysis gasification technology, the reaction process is easy to control, the gas yield per unit time is high, the reactant is only required to be a dry reaction raw material with good combustion characteristics, the waste biomass with high water content is difficult to treat, and the generated fuel gas is high-temperature gas, and the gas is changed into normal temperature after dust removal and desulfurization, so that energy loss is caused. Anaerobic fermentation can be suitable for the waste biomass with different water contents, but the reaction efficiency is greatly influenced by temperature, the difference between high-temperature fermentation and low-temperature fermentation is large, the high-temperature fermentation has enough gas production, harmful microorganisms in the waste biomass can be effectively killed, the obtained biogas slurry and biogas residues can be used for processing high-grade organic fertilizers, but the energy provided by the self fermentation is not enough to provide high-temperature guarantee.

In summary, the present applicant believes that the technical problems of the biomass utilization system in the prior art are as follows: the pyrolysis gasification technology and the anaerobic fermentation technology cannot be combined and complementarily applied to increase the comprehensive utilization efficiency of the waste biomass.

Disclosure of Invention

The invention aims to provide a biomass multi-element coupling gasification system, which aims to solve the technical problem that the comprehensive utilization efficiency of waste biomass cannot be increased by combining and complementarily applying a pyrolysis gasification technology and an anaerobic fermentation technology in the prior art. The technical effects (the pyrolysis gasification technology and the anaerobic fermentation technology are combined and complementarily applied, the biomass utilization rate is high, pollutants are not generated, dry and wet biomass can be treated without treatment and the like) generated by the optimal technical scheme in the technical schemes provided by the invention are described in detail below.

In order to achieve the purpose, the invention provides the following technical scheme: a biomass multi-element coupling gasification system comprises a high-temperature anaerobic fermentation subsystem, a pyrolysis gasification subsystem, a biomass energy utilization subsystem, a waste heat recovery utilization subsystem, a biomass energy storage subsystem, a biomass excess material utilization subsystem and a flue gas purification and discharge subsystem, wherein the high-temperature anaerobic fermentation subsystem carries out anaerobic fermentation on wet biomass by utilizing heat output by the waste heat recovery utilization subsystem and sub-high-temperature flue gas, outputs biogas to the biomass energy utilization subsystem for combustion and/or outputs the biogas to the biomass energy storage subsystem for storage, and outputs biogas slurry and biogas residues to the biomass excess material utilization subsystem for producing organic fertilizer; the pyrolysis gasification subsystem carries out pyrolysis by utilizing dry biomass, outputs biomass gas to the biomass energy utilization system for combustion, and/or outputs the biomass gas to the biomass energy storage subsystem for storage, and outputs biomass carbon to the biomass excess material utilization subsystem for producing the organic fertilizer; the biomass energy utilization subsystem works by utilizing methane output by the pyrolysis gasification subsystem and/or mixed gas output by the biomass energy storage subsystem, and outputs heat and secondary high-temperature flue gas to the waste heat recycling subsystem; the waste heat recycling subsystem absorbs the heat of the biomass energy utilization subsystem to supply to the high-temperature anaerobic fermentation subsystem for anaerobic fermentation, and provides hot water for hot water users; the biomass energy storage subsystem purifies and stores the biogas output by the high-temperature anaerobic fermentation subsystem and the biomass gas output by the pyrolysis gasification subsystem, and outputs mixed gas for the biomass energy utilization subsystem to use; the biomass excess material utilization subsystem receives biogas slurry and biogas residues output by the high-temperature anaerobic fermentation subsystem and biomass carbon output by the pyrolysis gasification subsystem to produce organic fertilizer; the flue gas purification and discharge subsystem purifies the room temperature flue gas discharged by the waste heat recovery and utilization subsystem and then discharges the room temperature flue gas into the atmosphere.

Optionally, the high-temperature anaerobic fermentation subsystem includes a wet storage bin, a seasoning tank, a first slurry pump, an acidification tank, a second slurry pump, a fermentation tank, a solid-liquid separator, and a biogas slurry tank and a biogas residue tank respectively connected to the solid-liquid separator, wherein the high-temperature anaerobic fermentation subsystem has the following working procedures: wet biomass firstly enters a wet stock bin for storage, then the wet biomass enters a seasoning tank and is added with biogas slurry output from a biogas slurry tank and water added outside the system for blending to form mixed slurry, the mixed slurry is conveyed to an acidification tank through a first slurry pump for acidification treatment to form acidification liquid, the acidification liquid is conveyed to a fermentation tank through a second slurry pump for high-temperature anaerobic fermentation, biogas generated by the high-temperature anaerobic fermentation enters a biomass energy storage subsystem for purification and storage, biogas slurry and biogas residue mixed liquid generated by the high-temperature anaerobic fermentation enters a solid-liquid separator for solid-liquid separation to output biogas slurry and biogas residue, the biogas slurry enters a biogas slurry tank, and the biogas residue enters a biogas residue tank.

Optionally, the waste heat recovery subsystem includes that the acidizing pond presss from both sides the cover, acidizing pond heat exchanger, fermentation vat press from both sides the cover, fermentation vat heat exchanger, tank, steam boiler heat exchanger and exhaust-heat boiler heat exchanger, wherein: the acidification tank jacket is arranged on the outer layer of the acidification tank in a wrapping manner, and the acidification tank heat exchanger is arranged in the acidification tank jacket; the fermentation tank jacket is arranged on the outer layer of the fermentation tank in a wrapping manner, and the fermentation tank heat exchanger is arranged in the acidification tank jacket; the steam boiler heat exchanger and the waste heat boiler heat exchanger are respectively arranged in the biomass energy utilization subsystem and absorb heat generated in the biomass energy utilization subsystem; the acidification tank heat exchanger, the fermentation tank heat exchanger water storage tank, the steam boiler heat exchanger and the waste heat boiler heat exchanger are sequentially connected to form a first water circulation loop, so that heat in the biomass energy utilization subsystem is transferred to the interior of the high-temperature anaerobic fermentation subsystem, and the high-temperature anaerobic fermentation subsystem is assisted to perform high-temperature anaerobic fermentation; the water storage tank is connected with a hot water user to form a second water circulation loop to provide hot water for the hot water user.

Optionally, pyrolysis gasification subsystem is including dry feed bin, spiral feeder, the gasifier that sets up according to the preface to and the air-blower of being connected with the gasifier, and the spiral discharger of being connected with the gasifier, and the play pond, and the first draught fan of being connected with the gasifier, and the cyclone of being connected with first draught fan, wherein pyrolysis gasification subsystem's work flow is as follows: dry living beings at first get into dry feed bin storage, and dry living beings pass through the screw feeder and carry to the gasifier in, the air-blower is the gasification stove air feed, and the gasification stove is interior to ignite and carry out pyrolysis gasification and produce living beings gas and biomass carbon, and wherein living beings gas carries to the biomass energy utilization subsystem and burns and utilize after cyclone removes dust, and/or living beings gas carries to purify the storage in the living beings energy storage subsystem, and biomass carbon carries to the play pond through the spiral discharger and reduces the temperature the storage.

Optionally, the biomass energy utilization subsystem includes a combustor, a steam boiler and a waste heat boiler, the steam boiler is provided with a steam boiler heat exchanger, the waste heat boiler is provided with a waste heat boiler heat exchanger, and the working process of the biomass energy utilization subsystem is as follows: the burner utilizes the biomass gas output by the pyrolysis gasification subsystem for cooking users to use; when the biomass gas output by the pyrolysis gasification subsystem is not enough to support the normal work of the combustor, the biomass energy storage subsystem provides mixed gas for the combustor to combust; the steam boiler heats a heat exchanger of the steam boiler by utilizing the biomass gas output by the pyrolysis gasification subsystem and outputs residual high-temperature flue gas; when the biomass gas output by the pyrolysis gasification subsystem is not enough to support the normal work of the steam boiler, the biomass energy storage subsystem provides mixed fuel gas for the steam boiler to use; the waste heat boiler heats the heat exchanger of the waste heat boiler by utilizing the residual high-temperature flue gas and outputs secondary high-temperature flue gas; and respectively inputting the secondary high-temperature flue gas into the fermentation tank interlayer and the acidification tank interlayer to assist the high-temperature anaerobic fermentation subsystem in carrying out anaerobic fermentation.

Optionally, the biomass energy storage subsystem includes a dehydrator, a desulfurizing tank and a gas storage tank which are connected in sequence, wherein the working process of the biomass energy storage subsystem is as follows: the dehydrator receives the biogas and/or biomass gas output by the cyclone dust collector and/or the fermentation tank, removes water, outputs the biogas and/or biomass gas to the desulfurizing tank for desulfurization, and inputs the biogas and/or biomass gas to the gas storage tank for gas storage; the gas storage tank can output mixed gas for the combustor and/or the steam boiler.

Optionally, the biomass excess material utilization subsystem is an organic fertilizer processing factory, and the organic fertilizer processing factory can utilize biomass carbon output by the discharge tank, biogas slurry output by the biogas slurry tank and biogas residues output by the biogas residue tank to produce an organic fertilizer together.

Optionally, the flue gas purification emission subsystem includes desulfurizing tower, fog water separator, second draught fan and the chimney that connects gradually, and wherein the work flow of flue gas purification emission subsystem is as follows: the fermentation tank jacket and the acidification tank jacket are respectively connected with the desulfurizing tower, the cooled residual room-temperature flue gas is output to the desulfurizing tower for desulfurization, then the cooled residual room-temperature flue gas enters the mist-water separator for dehydration, and then the cooled residual room-temperature flue gas is guided into a chimney through a second induced draft fan and finally discharged to the atmosphere.

Optionally, the solid-liquid separator is selected from one of a centrifugal solid-liquid separator, a filtering solid-liquid separator or a squeezing type filtering separator; the acidification tank heat exchanger, the fermentation tank heat exchanger, the steam boiler heat exchanger and the waste heat boiler heat exchanger are plate heat exchangers or tubular heat exchangers; the first induced draft fan and the second induced draft fan are roots fans; the burner is a gas stove; the dehydrator is a rotational flow plate type dehydrator.

Optionally, the fluid transmission between the two devices is power transmission or unpowered transmission, wherein the power transmission is performed through the fluid pump and the pipeline.

The biomass multi-element coupling gasification system provided by the embodiment of the invention has the beneficial effects that: the comprehensive utilization efficiency of the waste biomass is increased by combining and complementing the pyrolysis gasification technology and the anaerobic fermentation technology.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a process block diagram of a biomass multi-coupling gasification system according to an embodiment of the invention;

FIG. 2 is a process block diagram of a thermophilic anaerobic fermentation subsystem in accordance with an embodiment of the present invention;

FIG. 3 is a process diagram of a waste heat recovery subsystem according to an embodiment of the present invention;

FIG. 4 is a process block diagram of a pyrolysis gasification subsystem of an embodiment of the present invention;

FIG. 5 is a process block diagram of a biomass energy utilization subsystem of an embodiment of the present invention;

FIG. 6 is a process block diagram of a biomass energy storage subsystem of an embodiment of the invention;

FIG. 7 is a process block diagram of a biomass residue utilization subsystem of an embodiment of the present invention;

FIG. 8 is a process diagram of a flue gas cleaning emissions subsystem according to an embodiment of the present invention;

FIG. 9 is a process equipment route diagram of a biomass multi-coupling gasification system according to an embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

Fig. 1 shows a process diagram of a biomass multi-element coupling gasification system according to an embodiment of the present invention, which includes a high-temperature anaerobic fermentation subsystem a, a pyrolysis gasification subsystem B, a biomass energy utilization subsystem C, a waste heat recovery utilization subsystem D, a biomass energy storage subsystem E, a biomass excess material utilization subsystem F, and a flue gas purification and emission subsystem G. The high-temperature anaerobic fermentation subsystem A utilizes the heat output by the waste heat recycling subsystem D and the sub-high-temperature flue gas to perform anaerobic fermentation on wet biomass, outputs biogas to the biomass energy utilization subsystem C for combustion and simultaneously outputs the biogas to the biomass energy storage subsystem E for storage (in the embodiment, the biogas can also be independently conveyed to the biomass energy utilization subsystem C or the biomass energy storage subsystem E), and outputs biogas slurry and biogas residues to the biomass excess material utilization subsystem F for preparing the organic fertilizer. The pyrolysis gasification subsystem B utilizes dry biomass to perform pyrolysis, outputs biomass gas to the biomass energy utilization subsystem C to perform combustion, outputs the biomass gas to the biomass energy storage subsystem E to perform storage (in this embodiment, the biomass gas can also be independently conveyed to the biomass energy utilization subsystem C or the biomass energy storage subsystem E), and outputs biomass carbon to the biomass excess material utilization subsystem F to prepare the organic fertilizer. The biomass energy utilization subsystem C utilizes the biomass gas output by the pyrolysis gasification subsystem B and/or the mixed gas output by the biomass energy storage subsystem E to work, and outputs heat and secondary high-temperature flue gas to the waste heat recycling subsystem D. The waste heat recycling subsystem D absorbs heat output by the biomass energy utilization subsystem C and the secondary high-temperature smoke to perform anaerobic fermentation on the high-temperature anaerobic fermentation subsystem A, and provides hot water for hot water users to use. The biomass energy storage subsystem E purifies and stores the biogas output by the high-temperature anaerobic fermentation subsystem A and the biomass gas output by the pyrolysis gasification subsystem B, and can output mixed gas for the biomass energy utilization subsystem C to use. The biomass excess material utilization subsystem F receives biogas slurry and biogas residues output by the high-temperature anaerobic fermentation subsystem A and biomass carbon output by the pyrolysis gasification subsystem B to produce organic fertilizer. And the smoke purification and emission subsystem G purifies the room-temperature smoke exhausted by the waste heat recovery and utilization subsystem D and then emits the room-temperature smoke to the atmosphere.

Specifically, the wet biomass in the biomass multielement coupling gasification system of the embodiment refers to a biomass raw material which has relatively high relative humidity and is not suitable for pyrolysis gasification; dry biomass refers to a biomass raw material with relatively low relative humidity and unsuitable for high-temperature anaerobic fermentation; the secondary high-temperature flue gas refers to high-temperature flue gas discharged once after the methane or biomass gas which is subjected to energy absorption and used once is combusted; the mixed gas is mixed gas obtained by methane and biomass gas; the room temperature flue gas refers to the flue gas when the heat absorbed by the secondary high temperature flue gas is reduced to room temperature; the heat refers to the heat released when the methane or the biomass gas or the mixed gas is combusted; the hot water user refers to a user who washes one's face or gets warm today by using the hot water output by the waste heat recycling subsystem D.

Specifically, the specific structures (the component devices, the connection modes between the component devices, and the flowing directions of the materials between the component devices) of the high-temperature anaerobic fermentation subsystem a, the pyrolysis gasification subsystem B, the biomass energy utilization subsystem C, the waste heat recovery and utilization subsystem D, the biomass energy storage subsystem E, the biomass excess material utilization subsystem F, and the flue gas purification and emission subsystem G in the above embodiments are not specifically limited, and only the functional limitations of the above subsystems need to be satisfied.

The biomass multi-element coupling gasification system has the beneficial effects that the comprehensive utilization efficiency of the waste biomass is increased by combining and complementarily applying the pyrolysis gasification technology and the anaerobic fermentation technology.

Further, on the basis of the biomass multi-coupling gasification system of the above embodiment, as shown in fig. 2, a process block diagram of the high-temperature anaerobic fermentation subsystem of the embodiment of the present invention is shown, the high-temperature anaerobic fermentation subsystem a of the embodiment includes a wet bunker a1, a seasoning tank a2, a first slurry pump A3, an acidification tank a4, a second slurry pump a5, a fermentation tank a6, a solid-liquid separator a7, and a biogas slurry tank A8 and a biogas residue tank a9 respectively connected to the solid-liquid separator a7, wherein a working flow of the high-temperature anaerobic fermentation subsystem a is as follows: wet biomass firstly enters a wet stock bin A1 for storage, then the wet biomass enters a seasoning tank A2 and is added with biogas slurry output from a biogas slurry tank A8 and water added outside the system for blending to form mixed slurry, the mixed slurry is conveyed into an acidification tank A4 by a first mud pump A3 for acidification treatment to form acidification liquid, the acidification liquid is conveyed into a fermentation tank A6 by a second mud pump A5 for high-temperature anaerobic fermentation, biogas generated by the high-temperature anaerobic fermentation enters a biomass energy storage subsystem E for purification and storage, biogas slurry and biogas residue mixed liquid generated by the high-temperature anaerobic fermentation enters a solid-liquid separator A7 for solid-liquid separation to output biogas slurry and biogas residue, the biogas slurry enters a biogas slurry tank A8, and the biogas residue enters a biogas residue tank A9.

Specifically, in the above embodiment, the blending ratio of the wet biomass, the biogas slurry and the water in the mixed slurry in the blending tank a2 is not specifically limited, and those skilled in the art can perform blending determination according to the type of biomass raw material and the type of equipment.

The above embodiment provides a specific structure of a high-temperature anaerobic fermentation subsystem, which is easy to build and easy to implement an anaerobic fermentation process.

Further, on the basis of the biomass multi-coupling gasification system of the above embodiment, as shown in fig. 1 to 3, fig. 3 is a process block diagram of the waste heat recovery subsystem of the embodiment of the present invention, the waste heat recovery subsystem of the embodiment includes an acidification tank jacket D1, an acidification tank heat exchanger D2, a fermentation tank jacket D3, a fermentation tank heat exchanger D4, a water storage tank D5, a steam boiler heat exchanger D6, and a waste heat boiler heat exchanger D7, wherein the acidification tank jacket D1 is wrapped at an outer layer of the acidification tank a4, and the acidification tank heat exchanger D2 is disposed in the acidification tank jacket D1; the fermentation tank jacket D3 is covered on the outer layer of the fermentation tank A6, and the fermentation tank heat exchanger D4 is arranged in the fermentation tank jacket D3; the steam boiler heat exchanger D6 and the waste heat boiler heat exchanger D7 are respectively arranged in the biomass energy utilization subsystem C and absorb heat generated in the biomass energy utilization subsystem C; the acidification tank heat exchanger D2, the fermentation tank heat exchanger water storage tank D4, the steam boiler heat exchanger D6 and the waste heat boiler heat exchanger D7 are sequentially connected to form a first water circulation loop, so that heat of the biomass energy utilization subsystem C is transferred into the high-temperature anaerobic fermentation subsystem A, and the high-temperature anaerobic fermentation subsystem A is assisted to perform high-temperature anaerobic fermentation; the water storage tank D5 is connected with a hot water user to form a second water circulation loop to provide hot water for the hot water user.

Further, on the basis of the biomass multi-coupling gasification system of the above embodiment, as shown in fig. 1 to 4, where fig. 4 is a process block diagram of the pyrolysis gasification subsystem of the embodiment of the present invention, the pyrolysis gasification subsystem B of the present embodiment includes a dry bin B1, a spiral feeder B2, a gasification furnace B3, a blower B4 connected to the gasification furnace B3, a spiral discharger B5 connected to the gasification furnace B3, a discharge tank B6, a first induced draft fan B7 connected to the gasification furnace B3, and a cyclone B8 connected to the first induced draft fan B3, where the working flow of the pyrolysis gasification subsystem B of the present embodiment is as follows: dry biomass firstly enters a dry material bin to be stored in a B1, the dry biomass is conveyed into a gasification furnace B3 through a spiral feeder B2, an air blower B4 supplies air to the gasification furnace B3, the gasification furnace B3 is ignited to carry out pyrolysis gasification to generate biomass gas and biomass carbon, the biomass gas is dedusted by a cyclone dust collector B8 and then conveyed to a biomass energy utilization subsystem C to be combusted and utilized, and the biomass gas is conveyed into a biomass energy storage subsystem E to be purified and stored (or respectively and independently output to the biomass energy utilization subsystem C and the biomass energy storage subsystem E), and the biomass carbon is conveyed to a discharge tank B6 through a spiral discharger B5 to be cooled and stored.

Further, on the basis of the biomass multi-coupling gasification system of the above embodiment, as shown in fig. 1 to 5, fig. 5 is a process block diagram of the biomass energy utilization subsystem of the embodiment of the present invention, the biomass energy utilization subsystem C of the embodiment includes a burner C1, a steam boiler C2, and a waste heat boiler C3, a steam boiler heat exchanger D6 is disposed in the steam boiler C2, and a waste heat boiler heat exchanger D7 is disposed in the waste heat boiler C3, wherein the working flow of the biomass energy utilization subsystem C is as follows: the combustor C1 uses the biomass gas output by the pyrolysis gasification subsystem B for cooking users (the biomass gas is combusted in the combustor to supply heat for cooking activities); when the biomass gas output by the pyrolysis gasification subsystem B is not enough to support the normal work of the combustor C1, the biomass energy storage subsystem E provides mixed gas for the combustor to burn; the steam boiler C2 utilizes the biomass gas output by the pyrolysis gasification subsystem B to heat a steam boiler heat exchanger D6 and outputs residual high-temperature flue gas; when the biomass gas output by the pyrolysis gasification subsystem B is not enough to support the normal work of a steam boiler C2, the biomass energy storage subsystem E provides mixed fuel gas for the steam boiler; the waste heat boiler C3 heats the waste heat boiler heat exchanger D7 by utilizing the residual high-temperature flue gas and outputs secondary high-temperature flue gas; and the secondary high-temperature flue gas is respectively input into the fermentation tank interlayer D1 and the acidification tank interlayer D3 to assist the high-temperature anaerobic fermentation subsystem A in carrying out anaerobic fermentation.

Further, on the basis of the biomass multi-coupling gasification system of the above embodiment, as shown in fig. 1 to 6, fig. 6 is a process block diagram of the biomass energy storage subsystem of the embodiment of the present invention, the biomass energy storage subsystem E of the embodiment includes a dehydrator E1, a desulfurization tank E2, and an air storage tank E3, which are connected in sequence, wherein the working flow of the biomass energy storage subsystem E is as follows: the dehydrator E1 receives the biogas and/or biomass gas output by the cyclone dust collector B8 and/or the fermentation tank A6, removes water, outputs the biogas and/or biomass gas to the desulfurizing tank E2 for desulfurization, and inputs the biogas and/or biomass gas to the gas storage tank E3 for storage; the gas storage tank E3 can output the mixed gas for the burner C1 and the steam boiler C2 (or respectively and independently output to the burner C1 or the steam boiler C2).

Further, on the basis of the biomass multi-coupling gasification system of the above embodiment, as shown in fig. 1 to 7, fig. 7 is a process block diagram of a biomass excess material utilization subsystem of the embodiment of the present invention, the biomass excess material utilization subsystem F of the embodiment is an organic fertilizer processing plant F1, and the organic fertilizer processing plant F1 can utilize biomass carbon output by the discharge tank B6, biogas slurry output by the biogas slurry tank a8, and biogas residue output by the biogas residue tank a9 to produce an organic fertilizer together.

Further, on the basis of the biomass multi-coupling gasification system of the above embodiment, as shown in fig. 1 to 8, fig. 8 is a process block diagram of the flue gas purification and emission subsystem of the embodiment of the present invention, the flue gas purification and emission subsystem G of the embodiment includes a desulfurizing tower G1, a mist-water separator G2, a second induced draft fan G3 and a chimney G4, which are connected in sequence, wherein the working flow of the flue gas purification and emission subsystem G is as follows: and the fermentation tank jacket and the acidification tank jacket are respectively connected with the desulfurizing tower, and the cooled residual room-temperature flue gas is output to the desulfurizing tower for desulfurization, then enters the fog-water separator for dehydration, is guided into the chimney through the second induced draft fan, and is finally discharged to the atmosphere.

Specifically, the solid-liquid separator in all the above embodiments is selected from one of a centrifugal solid-liquid separator, a filtering solid-liquid separator or a squeeze filtering separator; the acidification tank heat exchanger, the fermentation tank heat exchanger, the steam boiler heat exchanger and the waste heat boiler heat exchanger are plate heat exchangers or tubular heat exchangers; the first induced draft fan and the second induced draft fan are roots fans; the burner is a gas stove; the dehydrator is a rotational flow plate type dehydrator.

Specifically, the fluid transmission mode between the two devices of all the above embodiments is power transmission or unpowered transmission, wherein the power transmission is realized through the fluid pump and the pipeline.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.