阅读说明：本技术 一种rdf热解气的收油及不凝气净化系统 (A kind of the receipts oil and fixed gas purification system of RDF pyrolysis gas ) 是由 李晓青 王宏星 王亚敏 胡悦琳 舒圣杰 于 2019-08-05 设计创作，主要内容包括：本发明公开了一种RDF热解气的收油及不凝气净化系统,涉及RDF热解技术领域,热解气先经过一级油喷淋收集设备和二级冷凝收集设备进行收油最后经不凝气净化设备对剩余的热解气进行净化,整个系统不仅降低设备投入和处理成本,而且大大提高了热解炉烟气排放的环保效果,更重要的是将热解气变成重油、轻油、清洁不凝气和易处理热解水,大大拓展了RDF热解系统的应用范围,使热解完全变成了一种RDF资源化转化的环保设备。(The invention discloses a kind of receipts of RDF pyrolysis gas oil and fixed gas purification systems, it is related to RDF pyrolytic technique field, pyrolysis gas first passes through primary oil spray collecting device and B-grade condensation collecting device carries out receipts oil and most purifies afterwards through fixed gas cleaning equipment to remaining pyrolysis gas, whole system not only reduces equipment investment and processing cost, and substantially increase the environment protecting of pyrolysis oven flue gas emission, pyrolysis gas is more importantly become into heavy oil, light oil, clean fixed gas and easy to handle pyrolysis water, the application range of RDF pyrolysis system has been expanded significantly, pyrolysis is set to become a kind of environmental protection equipment of RDF resourcable transformation completely.)

1. the receipts oil and fixed gas purification system of a kind of RDF pyrolysis gas, which is characterized in that the system comprises,

Primary oil sprays collecting device, is captured and collected the heavy oil component in RDF pyrolysis gas；

Light oil is collected in B-grade condensation collecting device, the cooling RDF pyrolysis gas come out from primary oil spray collecting device, condensation Component and pyrolysis water；

Fixed gas cleaning equipment purifies the incondensable gas come out from the B-grade condensation collector, institute's acid gas-containing (S, Cl, F hydrogen compound) removing is clean, and tar content is reduced to Gas Direct-fired power generation level.

2. the receipts oil and fixed gas purification system of RDF pyrolysis gas according to claim 1, which is characterized in that

The oil outlet of the primary oil spray collecting device is connected to the dregs of fat separation equipment, and the dregs of fat separation equipment includes An at least import, an oil outlet and a slag notch, the dregs of fat separation equipment outlet is collected with primary oil spray to be set Standby top oil inlet connection.

3. the receipts oil and fixed gas purification system of RDF pyrolysis gas according to claim 2, which is characterized in that the level-one The temperature of the gas outlet of oil spray collecting device is controlled at 90 DEG C~150 DEG C.

4. the receipts oil and fixed gas purification system of RDF pyrolysis gas according to claim 1, which is characterized in that the second level Condensation collection equipment includes second level indirect condensing collector and the oil water separator that is connected to the second level indirect condensing collector.

5. the receipts oil and fixed gas purification system of RDF pyrolysis gas according to claim 4, which is characterized in that the second level Indirect condensing collector includes an at least air inlet, a gas outlet and a condensation collection liquid outlet, the second level indirect condensing The gas temperature of the gas outlet of collector is 35~50 DEG C.

6. the receipts oil and fixed gas purification system of RDF pyrolysis gas according to claim 1, which is characterized in that described not coagulate Gas cleaning equipment includes the first buffer storage being sequentially connected to, level-one acid gas removal device, wet process electric coke catcher, second level acid Property gas removal device and gas cabinet.

7. the receipts oil and fixed gas purification system of RDF pyrolysis gas according to claim 6, which is characterized in that the second level The depickling degree of acid gas removal device is greater than the level-one acid gas removal device.

8. RDF pyrolysis gas according to claim 1 or 6 receipts oil and fixed gas purification system, which is characterized in that it is described not Solidifying gas cleaning equipment includes that an at least gas outlet is connected to the gas outlet of pyrolysis oven RDF pyrolysis gas.

9. the receipts oil and fixed gas purification system of RDF pyrolysis gas according to claim 8, which is characterized in that described not coagulate It is also equipped with electronic pressure controller between the gas outlet of gas cleaning equipment and the gas outlet of pyrolysis oven RDF pyrolysis gas, guarantees RDF Pyrolysis atmospheric pressure is in controlled range.

Technical field

The present invention relates to RDF pyrolytic technique field, particularly relates to the receipts oil of RDF pyrolysis gas and fixed gas purification process and set It is standby.

Background technique

It is previous inclined since Municipal Domestic Garbage Output brings serial environmental problem with Urbanization Progress sharp increase Overweight end-o f-pipe -control traditional mode oneself do not adapted to modern development demand, under the overall background of Ecological Civilization Construction, environment Friendly, three change processing modes will become the first choice of third generation Prediction for Solid Waste Treatment Technology.

Pyrolysis is that the organic component difficult to degrade in rubbish is heated and decomposable process, pyrolytic process under anaerobic or oxygen lean conditions Mainly using the thermal instability of organic matter, organic matter is heated in the state of oxygen deprivation or anaerobic makes its decomposition for processing.

Pyrolytic technique has the advantages that many: (1) garbage derivatived fuel (RDF) can get the heat of high heating value after pyrolysis Solution oil, pyrolytic carbon and pyrolysis gas, resource utilization rate are high；(2) pass through pyrolysis processing, the heavy metal in RDF is subsequently fixed at It is easily separated in lime-ash；(3) fixed gas after pyrolysis oil is collected becomes clean gas by purification, is used for pyrolysis system energy Source or fuel gas generation, disposal of pollutants are lower；Due to above-mentioned multiple advantages, pyrolysis has become generally acknowledged RDF main resourceization and turns Change mode.It is and right but applicants have found that mainly concentrate on the research of the process mechanism of pyrolysis to the pyrolysis of rubbish at present It is seldom in the research of pyrolysis gas disposal, it all also rests on directly burning and then handles the tail gas stage, do not only result in pyrolysis oven tail Gas processing system complexity, burden weight, and discharge are not easy up to standard.Extra fixed gas can not be used directly, or as product Sale.

Summary of the invention

In view of this, it is an object of the invention to propose the receipts oil and fixed gas purification system of a kind of RDF pyrolysis gas, with solution All or part of deficiency certainly in the prior art, to provide the environmental protection that pyrolysis is become to a kind of RDF resourcable transformation completely Processing system.

Based on above-mentioned purpose a kind of the receipts oil and fixed gas purification system of RDF pyrolysis gas provided by the invention, the system Including,

Primary oil sprays collecting device, is captured and collected the heavy oil component in RDF pyrolysis gas；

B-grade condensation collecting device, the cooling RDF pyrolysis gas come out from primary oil spray collecting device, condensation are collected Light oil constituents and pyrolysis water；

Fixed gas cleaning equipment purifies the incondensable gas come out from the B-grade condensation collector, contained acidity Gas (S, Cl, F hydrogen compound) removes completely as far as possible, and tar content is reduced to Gas Direct-fired power generation level.

Optionally, the oil outlet of the primary oil spray collecting device is connected to the dregs of fat separation equipment, the dregs of fat Separation equipment includes an at least import, an oil outlet and a slag notch, and the dregs of fat separation equipment exports and the level-one The top oil inlet connection of oil spray collecting device.

Optionally, the temperature of the gas outlet of the primary oil spray collecting device is controlled at 90 DEG C~150 DEG C.

Optionally, the B-grade condensation collecting device include second level indirect condensing collector and with the second level indirect condensing The oil water separator of collector connection.

Optionally, the second level indirect condensing collector includes an at least air inlet, and a gas outlet and a condensation are collected Liquid outlet, the gas temperature of the gas outlet of the second level indirect condensing collector are 35~50 DEG C.

Optionally, the fixed gas cleaning equipment includes that the first buffer storage being sequentially connected to, level-one sour gas are de- Except device, wet process electric coke catcher, second acid gas remover and gas cabinet.

Optionally, the depickling degree of the second acid gas remover is greater than the level-one acid gas removal device.

Optionally, the fixed gas cleaning equipment includes the gas outlet company of an at least gas outlet and pyrolysis oven RDF pyrolysis gas It is logical.

Optionally, it is also installed between the gas outlet of the fixed gas cleaning equipment and the gas outlet of pyrolysis oven RDF pyrolysis gas There is electronic pressure controller, guarantees that RDF pyrolysis atmospheric pressure is in controlled range.

From the above it can be seen that the present invention provides the receipts oil and fixed gas purification system of a kind of RDF pyrolysis gas, pyrolysis Gas initially enters first order oil spray collection tower and carries out capture collection.It is spray medium, the heavy component of collection with the oil product of collection Oil deposition tower bottom returns to tower top spray after slag/oil separation oil ingredient cooling and receives oil, and redundance outlet is as product； The pyrolysis gas not being captured being discharged from tower top enters second level indirect condensing collector；By pyrolysis gas secondary cooling again, light oil Component and pyrolysis one homocoagulation of water, export from collector and are discharged；The oil water mixture of discharge realizes water-oil separating by standing, heat Xie Shui enters sewage disposal system, and light component oil enters oil tank as product；It is discharged simultaneously from B-grade condensation collecting device cold The gas that cannot be condensed at a temperature of condenser, initially enter buffer buffering is followed by primary acids gas removal process, is passing through Caching gas holder is deposited after fixed gas after wet process electric tar and the purification of second level depth acid gas removal is sent by force (forcing) pump pressurization Storage, the hot-blast stove for sending pyrolysis oven outside as needed use, and redundance is used for direct combustion power generation, or uses as fuel.Entire system The collection of RDF pyrolysis gas is divided into two-stage and collected by system, obtains the different pyrolysis oil product of quality: heavy component oil and light component oil. Light oil constituents and pyrolysis water difference of specific gravity are big, and water-oil separating can be realized in slightly purification, avoid pyrolysis grease and collect shape together At Water-In-Oil, water-oil separating caused by oil-in-water type emulsion form it is difficult.The heavy oil component moisture-free of collection.Second level is collected Component in water dissolvable organic matter it is few, be pyrolyzed water in the collection more primary than pyrolysis gas of COD content pyrolysis water in COD drop significantly It is low, simplify pyrolysis water treatment process, reduces equipment investment and processing cost.The setting of fixed gas cleaning equipment, not only drops significantly The environmental protection facility investment of low pyrolysis oven fume treatment, and substantially increase the environment protecting of pyrolysis oven flue gas emission.It will be sour Property gas removal be divided into two-stage realization, the first order handle high-concentration acidic wastewater gas content fixed gas, for wet process electric tar create One safer condition creates conditions for the depickling of second level depth.Second level depickling is fine processing, is guaranteed acid in not condensing Gas concentration is not only low, and stablizes.The design of wet process electric tar system is carried out according to RDF characteristic, makes to meet RDF pyrolysis system It needs, and guarantees safety and tar removal effect.Fume treatment is replaced with gas-purification, gas flow is low, and not only processing is set It applies and puts into low, high treating effect, it is often more important that pyrolysis fixed gas is become into a kind of general combustible gas, has expanded RDF heat significantly Systematic difference range is solved, pyrolysis is become into a kind of RDF Environmental-protection recycling converting apparatus completely.

Detailed description of the invention

Fig. 1 is the oil recovery system flow chart of RDF of embodiment of the present invention pyrolysis gas；

Fig. 2 is the fixed gas purification system flow chart of RDF of embodiment of the present invention pyrolysis gas；

Fig. 3 is that RDF of embodiment of the present invention pyrolysis gas receives oil and fixed gas purification system flow chart.

Specific embodiment

For below by the description to embodiment, for example related manufacturing process of a specific embodiment of the invention and operation Application method etc., is described in further detail, to help those skilled in the art to inventive concept of the invention, technical solution There is more complete, accurate and deep understanding.

It should be noted that all statements for using " first " and " second " are for differentiation two in the embodiment of the present invention The non-equal entity of a same names or non-equal parameter, it is seen that " first " " second " only for the convenience of statement, does not answer It is interpreted as the restriction to the embodiment of the present invention, subsequent embodiment no longer illustrates this one by one.

RDF refers to what rubbish was prepared by techniques such as sorting, broken, drying, compression formings, is readily transported storage, can Substitute the New-type fuel of coal, petroleum etc..RDF has the characteristics that calorific value height, flameholding, is easy to transport, is easily stored, but because For in crude waste containing the substance that can produce poisonous and hazardous substance and some uncomfortable combination burnings after many burnings, so wanting Think the resource utilization rate of raising RDF, is treated as preferred skill to completely cut off the thermal decomposition manner of air manner progress indirect heating Art.But from the existing research to RDF pyrolysis system as can be seen that at present to being to be pyrolyzed mostly the research of the pyrolysis system of RDF The research of journey and pyrolysis oven itself, and it is seldom for the research of the system processing technique of subsequent RDF pyrolysis gas, so that pyrolysis Oil quality is low, and pyrolysis fixed gas combustion environmental-friendly discharge is higher, influences the higher value application of RDF pyrolytic technique popularization and product, resistance Hinder the popularization of RDF resource technology.

In order to solve the defect of RDF Environmental-protection recycling conversion system in the prior art, a kind of RDF heat provided by the invention The receipts oil and fixed gas purification system vented one's spleen, the system comprises:

Primary oil sprays collecting device, is captured and collected the heavy oil component in RDF pyrolysis gas；

B-grade condensation collecting device, the cooling RDF pyrolysis gas come out from primary oil spray collecting device, condensation are collected Light oil constituents and pyrolysis water；

Fixed gas cleaning equipment purifies the incondensable gas come out from the B-grade condensation collector, contained acidity Gas (S, Cl, F hydrogen compound) removes completely as far as possible, and tar content is reduced to Gas Direct-fired power generation level.

The collection of RDF pyrolysis gas is divided into two-stage to collect, obtains the different pyrolysis oil product of quality: heavy component oil and light group Divide oil.Light oil constituents and pyrolysis water difference of specific gravity are big, and water-oil separating can be realized in slightly purification, avoid pyrolysis grease and receive together It is difficult to collect water-oil separating caused by the Water-In-Oil formed, oil-in-water type emulsion form.The heavy oil component moisture-free of collection.Second level Water-soluble organic matter is few in the component of collection, be pyrolyzed water in the collection more primary than pyrolysis gas of COD content pyrolysis water in COD significantly It reduces, simplifies pyrolysis water treatment process, reduce equipment investment and processing cost.

The setting of pyrolysis gas fixed gas cleaning equipment, the environmental protection facility for not only greatly reducing pyrolysis oven fume treatment are thrown Enter, and substantially increases the environment protecting of pyrolysis oven flue gas emission.Fume treatment is replaced with gas-purification, gas flow is low, Not only treatment facility puts into low, high treating effect, it is often more important that pyrolysis fixed gas is become a kind of general combustible gas, is opened up significantly Pyrolysis is become a kind of RDF Environmental-protection recycling converting apparatus by the application range for having opened up RDF pyrolysis system completely.

In some optional embodiments, a kind of receipts oil of RDF pyrolysis gas provided in an embodiment of the present invention and fixed gas purification System includes two big systems, i.e. oil recovery system and purification system as described in Figure 3, and oil recovery system provided in an embodiment of the present invention includes Primary oil sprays collecting device, carries out capturing RDF pyrolysis gas and collects heavy oil component and B-grade condensation collecting device, is cooled down The RDF pyrolysis gas come out from primary oil spray collecting device, while condensing light oil constituents and pyrolysis water；Further primary oil Spraying collecting device includes primary oil spray column and dregs of fat separation equipment.The oil outlet of the primary oil spray collecting device and institute The connection of dregs of fat separation equipment is stated, the dregs of fat separation equipment includes an at least import, an oil outlet and a slag notch, described The outlet of dregs of fat separation equipment is connected to the top oil inlet of primary oil spray collecting device.B-grade condensation collecting device includes Second level indirect condensing collector and the oil water separator being connected to the second level indirect condensing collector；The second level indirect condensing Collector includes an at least air inlet, and a gas outlet and a condensation collection liquid export, the second level indirect condensing collector The gas temperature of gas outlet is 35~50 DEG C.Fixed gas cleaning equipment includes the buffer storage being sequentially connected to, level-one sour gas Body remover, wet process electric coke catcher, second acid gas remover and gas cabinet.And second acid gas remover is de- Sour degree is greater than the level-one acid gas removal device.Fixed gas cleaning equipment includes an at least gas outlet, and the fixed gas is net The gas outlet for changing equipment is connected to the gas outlet of the RDF pyrolysis oven pyrolysis gas.The gas outlet of fixed gas cleaning equipment with it is described It is also equipped with electronic pressure controller between the gas outlet of pyrolysis oven RDF pyrolysis gas, guarantees that RDF pyrolysis atmospheric pressure is in controllable model It encloses.

Further, the oil recovery system of RDF pyrolysis gas is as shown in Figure 1, the mixed RDF warm being discharged from RDF pyrolysis oven It vents one's spleen, initially enters primary oil spray collection tower and carry out capture collection, the heavy oil component of collection deposits tower bottom, then from oil outlet Dregs of fat separation equipment progress dregs of fat separating treatment is excluded and be transported to, carbon slag and heavy oil are obtained, obtained heavy oil a part is appropriate It is pipelined to primary oil spray after cooling and collects tower, carries out spray using the heavy oil of collection as spray medium and receives oil, it is more Remaining part becomes output of products.Part RDF pyrolysis gas is had during spray to be captured, the heat not being captured It vents one's spleen and is discharged from tower top, control 90 DEG C~150 DEG C of tower top outlet temperature.The pyrolysis gas of discharge enters second level indirect condensing collector In, RDF pyrolysis gas is cooled down again, light oil constituents and pyrolysis one homocoagulation of water are exported from second level indirect condensing collector and be discharged. 35~50 DEG C of Outlet Gas Temperature of second level indirect condensing collector are controlled simultaneously.The grease of second level indirect condensing collector is discharged Mixture is transported in oil water separator, realizes water-oil separating by standing, and the pyrolysis water isolated enters sewage disposal system, Pyrolysis light oil enters oil tank as product.

The collection of RDF pyrolysis gas is divided into two-stage to collect, obtains the different pyrolysis oil product of quality: heavy component oil and light group Divide oil.

Light oil constituents and pyrolysis water difference of specific gravity are big, and water-oil separating can be realized in slightly purification, avoid pyrolysis grease one It is difficult to act water-oil separating caused by collecting the Water-In-Oil formed, oil-in-water type emulsion form.

The heavy oil component moisture-free of collection.Water-soluble organic matter is few in the component that second level is collected, and is pyrolyzed COD in water and contains It measures COD in the pyrolysis water of collection more primary than pyrolysis gas to substantially reduce, simplifies pyrolysis water treatment process, reduce equipment investment and processing Cost.

Further, the purification system of RDF pyrolysis gas is as shown in Fig. 2, the target of system is by incoagulable combustible gas In pollutant acid gas (compound etc. of S, Cl, F) removing.Contained micro tar is removed to simultaneously and meets direct combustion power generation It is required that.

After pyrolysis oven oil recovery system progress two-stage receipts oil under the condenser temperature that second level indirect condensing collector is discharged The cooling fixed gas of the gas that cannot be condensed i.e. second level, the cooling fixed gas of the second level from different pyrolysis oven oil recovery systems initially enter Buffering is carried out in buffer storage to be interfered to avoid between pyrolysis oven.The primary acids gas that is followed by of buffer storage takes off Except process, a depickling first is carried out to the cooling fixed gas of second level, on the one hand control enters the acidic gas concentration of wet process electric tar, It on the other hand is that second acid gas removing creates conditions.Enter wet process electric coke catcher by the gas that depickling is handled and carries out wet process Electric tar processing, by the tar content in fixed gas from the near 30mg/L of 100mg/L or so hereinafter, meeting direct combustion power generation machine combustion gas It is required that (< 50mg/l), protects system instrument instrument and valve.In order to make fixed gas become clean gas, after wet process electric tar Increase the second acid gas subtractive process of depickling depth.Fixed gas after purification caches gas after being sent by force (forcing) pump pressurization Cabinet.The hot-blast stove for sending pyrolysis oven outside as needed uses, and redundance is used for direct combustion power generation, or uses as fuel.For The stability of pyrolysis furnace system furnace pressure, purified fixed gas and pyrolysis oven pyrolysis gas outlet connection are maintained, by system electricity Sub-control system automatic adjustment guarantees that pyrolysis furnace pressure is in controlled range.

The setting of pyrolysis oven fixed gas secondary purification equipment, not only greatly reduces the environmental protection facility of pyrolysis oven fume treatment Investment, and substantially increase the environment protecting of pyrolysis oven flue gas emission.

Acid gas removal is divided into two-stage to realize, the first order handles the fixed gas of high-concentration acidic wastewater gas content, is wet Method electric tar creates a safer condition, creates conditions for the depickling of second level depth.Second level depickling is fine processing, is guaranteed Acidic gas concentration is not only low in condensing, and stablizes.

It is designed according to RDF improved properties wet process electric tar system, makes the needs for meeting RDF pyrolysis system, and guarantee safety Property and tar removal effect.

Fume treatment is replaced with gas-purification, gas flow is low, and not only treatment facility puts into low, high treating effect, heavier What is wanted is that will be pyrolyzed fixed gas to become a kind of general combustible gas, has expanded the application range of RDF pyrolysis system significantly, will be pyrolyzed Become a kind of RDF Environmental-protection recycling converting apparatus entirely.

It should be understood by those ordinary skilled in the art that: the discussion of any of the above embodiment is exemplary only, not It is intended to imply that the scope of the present disclosure (including claim) is limited to these examples；Under thinking of the invention, above embodiments Or can also be combined between the technical characteristic in different embodiments, step can be realized with random order, and be existed such as Many other variations of the upper different aspect of the invention, for simplicity, they are not provided in details.

The embodiment of the present invention be intended to cover fall into all such replacements within the broad range of appended claims, Modifications and variations.Therefore, all within the spirits and principles of the present invention, any omission, modification, equivalent replacement, the improvement made Deng should all be included in the protection scope of the present invention.