阅读说明：本技术 一种发酵尾气循环利用装置 (Fermentation tail gas cyclic utilization device ) 是由 赵凌 王晓东 夏楠 范义文 撒治富 费宏岩 李涛 李国花 于 2021-09-16 设计创作，主要内容包括：本发明公开了一种发酵尾气循环利用装置。该发明属于合成气生物发酵技术领域,适用于铁合金工业尾气发酵技术,其中的发酵尾气循环利用装置的第一管路的出口、第二管路的出口分别与第三管路的入口相互连通,第三管路的出口用于与发酵室的入口连接；调节阀以及第一流量计沿第一管路的入口至出口的方向依次设置在第一管路上；用于检测一氧化碳浓度的第三浓度检测仪设置在第三管路上；调节阀、第一流量计以及第三浓度检测仪均与控制设备连接。本发明能够合理利用发酵尾气中的一氧化碳以解决铁合金工业尾气中的一氧化碳浓度偏高的技术问题,提高了生产质量,避免了资源浪费和环境污染,具有很好的经济性、实用性和创新性。(The invention discloses a fermentation tail gas recycling device. The invention belongs to the technical field of biological fermentation of synthesis gas and is suitable for tail gas fermentation technology in ferroalloy industry, wherein an outlet of a first pipeline and an outlet of a second pipeline of a fermentation tail gas recycling device are respectively communicated with an inlet of a third pipeline, and an outlet of the third pipeline is used for being connected with an inlet of a fermentation chamber; the regulating valve and the first flowmeter are sequentially arranged on the first pipeline along the direction from the inlet to the outlet of the first pipeline; a third concentration detector for detecting the concentration of carbon monoxide is arranged on the third pipeline; the regulating valve, the first flowmeter and the third concentration detector are all connected with the control equipment. The method can reasonably utilize the carbon monoxide in the fermentation tail gas to solve the technical problem of high concentration of the carbon monoxide in the ferroalloy industrial tail gas, improves the production quality, avoids resource waste and environmental pollution, and has good economy, practicability and innovation.)

1. The fermentation tail gas recycling device is characterized by comprising:

the device comprises a first pipeline (1), a second pipeline (2) and a third pipeline (3), wherein an inlet of the first pipeline (1) is used for being connected with an outlet of a fermentation tail gas collecting device, an inlet of the second pipeline (2) is used for being connected with an outlet of a ferroalloy industrial tail gas collecting device, an outlet of the first pipeline (1) and an outlet of the second pipeline (2) are respectively communicated with an inlet of the third pipeline (3), and an outlet of the third pipeline (3) is used for being connected with an inlet of a fermentation chamber;

the regulating valve (5) and the first flowmeter (6) are sequentially arranged on the first pipeline (1) along the direction from the inlet to the outlet of the first pipeline (1);

a third concentration detector (14) for detecting the concentration of carbon monoxide is arranged on the third pipeline (3);

and the control equipment is connected with the regulating valve (5), the first flowmeter (6) and the third concentration detector (14).

2. The fermentation tail gas recycling device according to claim 1, further comprising a first concentration detector (11) disposed on the first pipeline (1) for detecting a concentration of carbon monoxide, wherein the first concentration detector (11) is disposed between the first flow meter (6) and an outlet of the first pipeline (1), and the first concentration detector (11) is connected to the control device.

3. A fermentation tail gas recycling device according to claim 1, characterized in that the device further comprises a second flow meter (10) arranged on the second pipeline (2), and the second flow meter (10) is connected with the control device.

4. A fermentation tail gas recycling device according to claim 1, further comprising a second concentration detector (12) disposed on the second pipeline (2) for detecting the concentration of carbon monoxide, wherein the second concentration detector (12) is disposed between the second flowmeter (10) and the outlet of the second pipeline (2), and the second concentration detector (12) is connected to the control device.

5. The fermentation tail gas recycling device according to claim 1, further comprising a first automatic switch valve (7) disposed on the first pipeline (1), wherein the first automatic switch valve (7) is disposed between the regulating valve (5) and the inlet of the first pipeline (1), and the first automatic switch valve (7) is connected to the control device.

6. The fermentation tail gas recycling device according to claim 1, further comprising a first pressure detector (4) disposed on the first pipeline (1), wherein the first pressure detector (4) is disposed between the first automatic control switch valve (7) and the inlet of the first pipeline (1), and the first pressure detector (4) is connected to the control device.

7. A fermentation tail gas recycling device according to claim 1, characterized in that the device further comprises a check valve (8) disposed on the first pipeline (1), the check valve (8) is disposed between the first concentration detector (11) and the outlet of the first pipeline (1), and the check valve (8) is connected to the control device.

8. The fermentation tail gas recycling device according to claim 1, further comprising a second automatic switch valve (9) disposed on the second pipeline (2), wherein the second automatic switch valve (9) is disposed between the second flow meter (10) and the inlet of the second pipeline (2), and the second automatic switch valve (9) is connected to the control device.

9. The fermentation tail gas recycling device according to claim 1, further comprising a second pressure detector (15) disposed on the second pipeline (2), wherein the second pressure detector (15) is disposed between the second automatic switch valve (9) and the inlet of the second pipeline (2), and the second pressure detector (15) is connected to the control device.

10. The fermentation tail gas recycling device according to claim 1, further comprising a third automatic switch valve (13) disposed on the third pipeline (3), wherein the third automatic switch valve (13) is disposed between the third concentration detector (14) and the inlet of the third pipeline (3), and the third automatic switch valve (13) is connected to the control device.

Technical Field

The invention belongs to the technical field of synthesis gas biological fermentation, and particularly relates to a fermentation tail gas recycling device.

Background

The biological fermentation technology of tail gas in ferroalloy industry belongs to a biological fermentation method of synthesis gas, which is a new fermentation technology, and the fermentation technology is characterized in that carbon monoxide, hydrogen and the like in gas are utilized by specific microbial cells as a carbon source and an energy source, and the carbon monoxide is converted into compounds such as ethanol through the biological metabolism of the carbon monoxide in a bioreactor.

The utilization rate of carbon monoxide in the ferroalloy industrial tail gas (the concentration of the carbon monoxide is 68-75%) can be about 80% in the fermentation process by utilizing the ferroalloy industrial tail gas biological fermentation technology, the fermentation tail gas still contains part of unreacted carbon monoxide (the concentration of the carbon monoxide is 14-20%), in the prior art, the fermentation tail gas containing the carbon monoxide is generally sent into an oxidation furnace for high-temperature incineration and thermal oxidation, and the carbon monoxide is oxidized into the carbon monoxide by the oxidation furnace₂And then discharged to the air through a chimney. On one hand, the discharge of unreacted carbon monoxide in the fermentation tail gas after oxidation is a waste of resources, and on the other hand, the discharged fermentation tail gas after combustion contains carbon dioxide, dust, VOC and the like, which can cause certain pollution to the environment.

In addition, the concentration of carbon monoxide in the ferroalloy industrial tail gas is 68% -75%, and in the technology for preparing ethanol by biological fermentation of the industrial tail gas, the concentration of carbon monoxide in the ferroalloy industrial tail gas most suitable for specific microbial cells is 55% -60%, if the concentration of carbon monoxide in the ferroalloy industrial tail gas is high for a long time, the selectivity of metabolites of the microorganisms can be influenced, and the stable production of a fermentation target product (ethanol) is not facilitated.

Disclosure of Invention

The invention aims to solve the technical problems of resource waste and environmental pollution caused by unreasonable utilization of carbon monoxide in fermentation tail gas and high carbon monoxide concentration in ferroalloy industrial tail gas to a certain extent. Therefore, the invention provides a fermentation tail gas recycling device.

The technical scheme of the invention is as follows:

the invention provides a fermentation tail gas recycling device, which comprises:

the device comprises a first pipeline, a second pipeline and a third pipeline, wherein an inlet of the first pipeline is used for being connected with an outlet of a fermentation tail gas collecting device, an inlet of the second pipeline is used for being connected with an outlet of a ferroalloy industrial tail gas collecting device, an outlet of the first pipeline and an outlet of the second pipeline are respectively communicated with an inlet of the third pipeline, and an outlet of the third pipeline is used for being connected with an inlet of a fermentation chamber;

the regulating valve and the first flowmeter are sequentially arranged on the first pipeline along the direction from the inlet to the outlet of the first pipeline;

a third concentration detector for detecting the concentration of carbon monoxide is arranged on the third pipeline;

and the control equipment is connected with the regulating valve, the first flowmeter and the third concentration detector.

Further, the device further comprises a first concentration detector arranged on the first pipeline and used for detecting the concentration of carbon monoxide, the first concentration detector is arranged between the first flowmeter and an outlet of the first pipeline, and the first concentration detector is connected with the control equipment.

Further, the device also comprises a second flow meter arranged on the second pipeline, and the second flow meter is connected with the control equipment.

Further, the device further comprises a second concentration detector arranged on the second pipeline and used for detecting the concentration of carbon monoxide, the second concentration detector is arranged between the second flowmeter and an outlet of the second pipeline, and the second concentration detector is connected with the control equipment.

Furthermore, the device also comprises a first pressure detector arranged on the first pipeline, the first pressure detector is arranged between the first automatic control switch valve and the inlet of the first pipeline, and the first pressure detector is connected with the control equipment.

Further, the device also comprises a check valve arranged on the first pipeline, the check valve is arranged between the first concentration detector and the outlet of the first pipeline, and the check valve is connected with the control equipment.

Further, the device also comprises a second automatic control switch valve arranged on the second pipeline, the second automatic control switch valve is arranged between the second flowmeter and the inlet of the second pipeline, and the second automatic control switch valve is connected with the control equipment.

Furthermore, the device also comprises a second pressure detector arranged on the second pipeline, the second pressure detector is arranged between the second self-control switch valve and the inlet of the second pipeline, and the second pressure detector is connected with the control equipment.

Furthermore, the device also comprises a third automatic control switch valve arranged on the third pipeline, the third automatic control switch valve is arranged between the third concentration detector and the inlet of the third pipeline, and the third automatic control switch valve is connected with the control equipment.

The embodiment of the invention at least has the following beneficial effects:

the fermentation tail gas recycling device provided by the invention has the advantages that the inlet of the first pipeline is connected with the outlet of the fermentation tail gas collecting device, the inlet of the second pipeline is connected with the outlet of the ferroalloy industrial tail gas collecting device, so that the fermentation tail gas in the fermentation tail gas collecting device enters the first pipeline and the ferroalloy industrial tail gas in the ferroalloy industrial tail gas collecting device enters the second pipeline, the outlet of the first pipeline and the outlet of the second pipeline are respectively communicated with the inlet of the third pipeline, the outlet of the third pipeline is connected with the inlet of the fermentation chamber, so that mixed gas formed by mixing the fermentation tail gas in the first pipeline and the ferroalloy industrial tail gas in the second pipeline at the communicated position enters the third pipeline, the mixed gas enters the fermentation chamber through the third pipeline to react with specific microbial cells, and the regulating valve and the first flow meter are sequentially arranged on the first pipeline along the direction from the inlet to the outlet of the first pipeline, the third concentration detection appearance sets up on the third pipeline, and governing valve, first flowmeter and third concentration detection appearance all are connected with controlgear, therefore, when the third concentration detection appearance detects that the carbon monoxide concentration in the mist in the third pipeline is not conform to the target concentration, controlgear can be according to the flow size data of the fermentation tail gas in the first pipeline that first flowmeter measured, and the control governing valve is adjusted the flow size of the fermentation tail gas in the first pipeline until the third concentration detection appearance detects that the carbon monoxide concentration in the mist accords with the target concentration.

In conclusion, the fermentation tail gas recycling device disclosed by the invention can reasonably utilize carbon monoxide in the fermentation tail gas to solve the technical problem that the concentration of the carbon monoxide in the ferroalloy industrial tail gas is higher, improves the production quality, avoids resource waste and environmental pollution, and has good economical efficiency, practicability and innovation.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a fermentation tail gas recycling device according to an embodiment of the present invention.

Reference numerals:

1-a first pipeline; 2-a second pipeline; 3-a third pipeline; 4-a first pressure detector; 5-adjusting the valve; 6-a first flow meter; 7-a first self-controlled switch valve; 8-a check valve; 9-a second self-control switch valve; 10-a second flow meter; 11-a first concentration detector; 12-a second concentration detector; 13-a third self-controlled switch valve; 14-a third concentration detector; 15-second pressure detector.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

The invention is described below with reference to specific embodiments in conjunction with the following drawings:

fig. 1 is a device for recycling fermentation tail gas according to an embodiment of the present invention, and with reference to fig. 1, the device includes a first pipeline 1, a second pipeline 2, a third pipeline 3, a regulating valve 5, a first flow meter 6, a third concentration detector 14, and a control device.

In the embodiment of the invention, an inlet of a first pipeline 1 is used for being connected with an outlet of a fermentation tail gas collecting device, an inlet of a second pipeline 2 is used for being connected with an outlet of a ferroalloy industrial tail gas collecting device, an outlet of the first pipeline 1 and an outlet of the second pipeline 2 are respectively communicated with an inlet of a third pipeline 3, and an outlet of the third pipeline 3 is used for being connected with an inlet of a fermentation chamber; the regulating valve 5 and the first flow meter 6 are sequentially arranged on the first pipeline 1 along the direction from the inlet to the outlet of the first pipeline 1; a third concentration detector 14 for detecting the concentration of carbon monoxide is provided on the third pipeline 3; the regulating valve 5, the first flow meter 6 and the third concentration detector 14 are all connected to a control device.

Specifically, with reference to fig. 1, an inlet of a first pipeline 1 is used for being connected to an outlet of a fermentation tail gas collecting device, an inlet of a second pipeline 2 is used for being connected to an outlet of a ferroalloy industrial tail gas collecting device, so that the fermentation tail gas in the fermentation tail gas collecting device enters the first pipeline 1 and the ferroalloy industrial tail gas in the ferroalloy industrial tail gas collecting device enters the second pipeline 2, an outlet of the first pipeline 1 and an outlet of the second pipeline 2 are respectively communicated with an inlet of a third pipeline 3, and an outlet of the third pipeline 3 is used for being connected to an inlet of a fermentation chamber, so that a mixed gas formed by mixing the fermentation tail gas in the first pipeline 1 and the ferroalloy industrial tail gas in the second pipeline 2 at the communicated position enters the third pipeline 3, and the mixed gas enters the fermentation chamber via the third pipeline 3 to react with a specific microorganism.

Further, referring to fig. 1, since the regulating valve 5 and the first flow meter 6 are sequentially disposed on the first pipeline 1 along the direction from the inlet to the outlet of the first pipeline 1, the third concentration detector 14 is disposed on the third pipeline 3, and the regulating valve 5, the first flow meter 6 and the third concentration detector 14 are all connected to the control device, when the third concentration detector 14 detects that the concentration of carbon monoxide in the mixed gas in the third pipeline 3 does not meet the target concentration, the control device can control the regulating valve 5 to regulate the flow of the fermented tail gas in the first pipeline 1 according to the data of the flow of the fermented tail gas in the first pipeline 1 measured by the first flow meter 6 until the third concentration detector 14 detects that the concentration of carbon monoxide in the mixed gas meets the target concentration.

Further, referring to fig. 1, the apparatus further includes a first concentration detector 11 disposed on the first pipeline 1 for detecting the concentration of carbon monoxide, the first concentration detector 11 is disposed between the first flowmeter 6 and the outlet of the first pipeline 1, and the first concentration detector 11 is connected to the control device, so that the first concentration detector 11 detects the concentration of carbon monoxide in the first pipeline 1 in real time, and transmits the measured data to the control device, so as to provide a reference for the control and adjustment of the regulating valve 5.

With reference to fig. 1, the apparatus further includes a second flowmeter 10 disposed on the second pipeline 2, and the second flowmeter 10 is connected to the control device, so that the second flowmeter 10 can detect the flow rate of the ferroalloy industrial exhaust gas in the second pipeline 2 in real time and transmit the measured data to the control device, so as to provide a reference for the control and adjustment of the regulating valve 5.

With reference to fig. 1, the apparatus further includes a second concentration detector 12 disposed on the second pipeline 2 for detecting the concentration of carbon monoxide, the second concentration detector 12 is disposed between the second flowmeter 10 and the outlet of the second pipeline 2, and the second concentration detector 12 is connected to the control device, so that the second concentration detector 12 detects the concentration of carbon monoxide in the second pipeline 2 in real time, and transmits the measured data to the control device, so as to provide a reference for controlling and adjusting the regulating valve 5.

With reference to fig. 1, the apparatus further includes a first pressure detector 4 disposed on the first pipeline 1, the first pressure detector 4 is disposed between the regulating valve 5 and the inlet of the first pipeline 1, and the first pressure detector 4 is connected to the control device, so as to realize real-time detection of the pressure of the fermentation tail gas in the first pipeline 1 by the first pressure detector 4, and transmit the detected data to the control device.

With reference to fig. 1, the apparatus further includes a second pressure detector 15 disposed on the second pipeline 2, the second pressure detector 15 is disposed between the second flowmeter 10 and the inlet of the second pipeline 2, and the second pressure detector 15 is connected to the control device, so as to implement real-time detection of the pressure of the ferroalloy industrial exhaust gas in the second pipeline 2 by the second pressure detector 15, and transmit the detected data to the control device.

Further, referring to fig. 1, the apparatus further includes a first automatic switching valve 7, a check valve 8, a second automatic switching valve 9, and a third automatic switching valve 13.

A first automatic control switch valve 7 and a check valve 8 in the embodiment of the invention are arranged on the first pipeline 1, the first automatic control switch valve 7 is arranged between the regulating valve 5 and the first pressure detector 4, and the check valve 8 is arranged between the first concentration detector 11 and the outlet of the first pipeline 1; the second automatic control switch valve 9 is arranged on the second pipeline 2, and the second automatic control switch valve 9 is arranged between the second flowmeter 10 and the second pressure detector 15; the third automatic control switch valve 13 is arranged on the third pipeline 3, the third automatic control switch valve 13 is arranged between the third concentration detector 14 and the inlet of the third pipeline 3, and the first automatic control switch valve 7, the check valve 8, the second automatic control switch valve 9 and the third automatic control switch valve 13 are all connected with the control equipment.

Under normal conditions, the pressure of the fermentation tail gas in the first pipeline 1 is far higher than the pressure of the ferroalloy industrial tail gas in the second pipeline 2, and when the pressure of the fermentation tail gas is lower than the pressure of the industrial tail gas, the condition that the supply of the fermentation tail gas in the first pipeline 1 by the fermentation tail gas collecting device or/and the supply of the ferroalloy industrial tail gas in the second pipeline 2 by the ferroalloy industrial tail gas collecting device are failed is indicated.

Specifically, when the pressure data of the fermentation tail gas in the first pipeline 1 received by the control device is lower than the pressure data of the ferroalloy industrial tail gas in the second pipeline 2, the control device controls the first automatic control switch valve 7, the check valve 8, the second automatic control switch valve 9 and the third automatic control switch valve 13 to be automatically closed, the supply of the fermentation tail gas in the first pipeline 1 by the fermentation tail gas collecting device and the supply of the ferroalloy industrial tail gas in the second pipeline 2 by the ferroalloy industrial tail gas collecting device are cut off, all intercommunications among the first pipeline 1, the second pipeline 2 and the third pipeline 3 are cut off, and the regulating valve 5 is in a stop state and is not controlled and regulated.

Further, after the fault is eliminated, the pressure data of the fermentation tail gas in the first pipeline 1 received by the control device is higher than the pressure data of the ferroalloy industrial tail gas in the second pipeline 2, the control device controls the first automatic control switch valve 7, the check valve 8, the second automatic control switch valve 9 and the third automatic control switch valve 13 to be automatically opened, the supply of the fermentation tail gas in the first pipeline 1 by the fermentation tail gas collecting device and the supply of the ferroalloy industrial tail gas in the second pipeline 2 by the ferroalloy industrial tail gas collecting device are restored, all the intercommunications among the first pipeline 1, the second pipeline 2 and the third pipeline 3 are restored, and at this time, the regulating valve 5 is in a use state, and the control and regulation are continued.

The control device in the present invention may be a control terminal, a button or an operation interface may be provided on the control device for operation, and the target concentration range of the third concentration detector 14, the opening degree of the regulating valve 5, the opening and closing of the first automatic on-off valve 7, the opening and closing of the check valve 8, the opening and closing of the second automatic on-off valve 9, the opening and closing of the third automatic on-off valve 13, and the like may be adjusted by the operation button and the interface.

In conclusion, the fermentation tail gas recycling device disclosed by the invention can reasonably utilize carbon monoxide in the fermentation tail gas to solve the technical problem that the concentration of the carbon monoxide in the ferroalloy industrial tail gas is higher, improves the production quality, avoids resource waste and environmental pollution, and has good economical efficiency, practicability and innovation.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.

It should be noted that all the directional indications in the embodiments of the present invention are only used to explain the relative position relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.