CN112755743A - Tail gas recovery equipment and method for ferroalloy industrial tail gas fermentation - Google Patents
Tail gas recovery equipment and method for ferroalloy industrial tail gas fermentation Download PDFInfo
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Abstract
The embodiment of the invention discloses tail gas recovery equipment and a method for ferroalloy industrial tail gas fermentation, wherein the recovery device comprises: a raw material gas buffer device; a fermentation device: obtaining fermentation liquor and fermentation tail gas with liquid drops; a gas inlet of the fermentation device is communicated with a gas outlet of the raw material gas buffer device; a gas inlet of the gas-liquid separator is communicated with a gas outlet of the fermentation device, and a liquid outlet of the gas-liquid separator is communicated with a liquid inlet of the fermentation device; one end of the tail gas recovery pipeline is communicated with a gas outlet of the gas-liquid separator, and the other end of the tail gas recovery pipeline is communicated with an inlet of the raw gas buffer device; the concentration adjustment assembly comprises: the control unit with all set up in concentration meter and governing valve on the tail gas recovery pipeline, the measured value of concentration meter is transformed into the fermentation tail gas concentration of signal transmission in the aperture automatically regulated tail gas recovery pipeline of control unit in order to control the governing valve. The concentration of carbon monoxide is adjusted, and energy waste is avoided.
Description
Technical Field
The embodiment of the invention relates to the technical field of fermentation, in particular to tail gas recovery equipment and method for ferroalloy industrial tail gas fermentation.
Background
The ferroalloy industrial tail gas fermentation technology is a technology for converting carbon monoxide in the tail gas of a submerged arc furnace into fuel ethanol in one step. Industrial tail gas generated in the production process of ferroalloy enterprises is biologically fermented, distilled and dehydrated to generate fuel ethanol with the concentration of more than 99.5 percent, and high-quality mycoprotein can be separated from the distilled fermentation liquor to be used as animal feed.
As a global first set of ferroalloy industrial tail gas fermentation ethanol preparation process, the adjustment of the concentration of carbon monoxide in feed gas is particularly important, and if a third inert gas is introduced by adopting a traditional method for adjustment, a large amount of energy waste is undoubtedly caused.
How to develop a tail gas recovery device and method for ferroalloy industrial tail gas fermentation to well adjust the concentration of carbon monoxide in the raw material gas, not to cause energy waste, and to realize the optimal supply of raw material gas resources is a technical problem to be solved urgently.
Disclosure of Invention
The embodiment of the application can well adjust the concentration of carbon monoxide in the raw material gas, does not cause energy waste and realizes the optimal supply of raw material gas resources by providing the tail gas recovery equipment for the tail gas fermentation in the ferroalloy industry.
The application provides the following technical scheme through an embodiment of the application:
in a first aspect of embodiments of the present invention, there is provided a tail gas recovery apparatus for ferroalloy industrial tail gas fermentation, including:
the raw material gas buffer device is used for purifying the ferroalloy industrial tail gas to obtain raw material gas and comprises a gas inlet and a gas outlet;
the fermentation device is used for fermenting by adopting the feed gas and the inner thalli to obtain fermentation liquor and fermentation tail gas with liquid drops; the fermentation device comprises a gas inlet, a liquid inlet and a gas outlet, and the gas inlet of the fermentation device is communicated with the gas outlet of the raw material gas buffer device;
the gas-liquid separator is used for carrying out gas-liquid separation on the fermentation tail gas with the liquid drops to obtain the liquid drops and the fermentation tail gas; the gas-liquid separator comprises a gas inlet, a liquid outlet and a gas outlet, the gas inlet of the gas-liquid separator is communicated with the gas outlet of the fermentation device, and the liquid outlet of the gas-liquid separator is communicated with the liquid inlet of the fermentation device;
a tail gas recovery pipeline for returning the fermentation tail gas to the raw gas buffer device, wherein one end of the tail gas recovery pipeline is communicated with the gas outlet of the gas-liquid separator, and the other end of the tail gas recovery pipeline is communicated with the gas inlet of the raw gas buffer device;
the concentration adjusting component is used for controlling the concentration of the fermentation tail gas in the tail gas recovery pipeline; the concentration adjustment assembly comprises: the control unit with set up respectively in last concentration meter and the governing valve of tail gas recovery pipeline, the concentration meter with the governing valve respectively with the control unit electricity is connected, the measured value of concentration meter is converted the signal of telecommunication and is given the control unit, the control unit control the aperture of governing valve is with automatically regulated fermentation tail gas concentration in the tail gas recovery pipeline.
Further, the raw material gas buffering device comprises:
raw material gas buffer tank body: the device is used for collecting the ferroalloy industrial tail gas;
a raw material gas purification unit: the system is used for purifying the ferroalloy industrial tail gas to obtain raw material gas; the feed gas purification unit is arranged in the feed gas buffer tank body.
Further, the raw material gas buffering device further comprises: pressure detector and thermodetector, pressure detector and thermodetector set up respectively in this is internal to the raw materials gas buffer tank, be used for right the pressure and the temperature of raw materials gas monitor.
Further, the fermentation apparatus comprises:
fermentation tank: the fermentation system is used for fermenting by adopting the feed gas and the inner thalli to obtain fermentation liquor and fermentation tail gas with liquid drops; the fermentation tank comprises a gas inlet, a liquid outlet and a gas outlet, and the gas inlet of the fermentation device is communicated with the gas outlet of the raw material gas buffer device;
a purification unit: purifying and separating the fermentation liquor to obtain ethanol and mycoprotein; the purifier unit has an inlet and an outlet, the inlet of the purifier unit being in communication with the liquid outlet of the fermentor.
Further, the control unit is a PID regulator or a DCS system.
In a second aspect of embodiments of the present invention, there is provided a method for fermentation of ferroalloy industrial tail gas, the method comprising:
purifying the ferroalloy industrial tail gas to obtain raw material gas;
fermenting by adopting the feed gas and the inner thalli to obtain fermentation liquor and fermentation tail gas with liquid drops;
carrying out gas-liquid separation on the fermentation tail gas with the liquid drops to obtain the liquid drops and the fermentation tail gas;
and introducing the fermentation tail gas into the ferroalloy industrial tail gas for purification treatment together for circulation.
Further, the temperature of the feed gas is 25-35 ℃, and the pressure is less than 0.7 MPa.
Further, in the fermentation, the fermentation temperature is 25-45 ℃, the pressure is less than 0.6MPa, and the liquid level is 70-90%.
Further, in the gas-liquid separation, the pressure is less than 0.6MPa, and the liquid level is 20-80%.
One or more technical solutions provided in the embodiments of the present application at least include the following technical effects or advantages:
the embodiment of the invention discloses tail gas recovery equipment for ferroalloy industrial tail gas fermentation, which comprises: raw material gas buffer device: the method is used for purifying the ferroalloy industrial tail gas to obtain raw material gas; a fermentation device: the fermentation system is used for fermenting by adopting the feed gas and the inner thalli to obtain fermentation liquor and fermentation tail gas with liquid drops; the fermentation device comprises a gas inlet, a liquid inlet and a gas outlet, and the gas inlet of the fermentation device is communicated with the gas outlet of the raw material gas buffer device; a gas-liquid separator: the device is used for carrying out gas-liquid separation on the fermentation tail gas with the liquid drops to obtain the liquid drops and the fermentation tail gas; the gas-liquid separator comprises a gas inlet, a liquid outlet and a gas outlet, the gas inlet of the gas-liquid separator is communicated with the gas outlet of the fermentation device, and the liquid outlet of the gas-liquid separator is communicated with the liquid inlet of the fermentation device; a tail gas recovery pipeline: the tail gas recovery pipeline is used for returning the fermentation tail gas to the feed gas buffer device, one end of the tail gas recovery pipeline is communicated with a gas outlet of the gas-liquid separator, and the other end of the tail gas recovery pipeline is communicated with an inlet of the feed gas buffer device; concentration adjusting assembly: the tail gas recovery pipeline is used for controlling the concentration of fermentation tail gas in the tail gas recovery pipeline; the concentration adjustment assembly comprises: the control unit with all set up in last concentration meter and the governing valve of tail gas recovery pipeline, the concentration meter with the governing valve all with the control unit electricity is connected, the measured value of concentration meter converts the signal of telecommunication into and gives the control unit, the control unit control the aperture automatically regulated of governing valve fermentation tail gas concentration in the tail gas recovery pipeline. The embodiment of the invention realizes the flexible regulation of the raw material gas by optimizing and adjusting the trend of the tail gas of the fermentation tank, does not introduce a third medium, does not cause resource waste, and better meets the requirement of the process for preparing the ethanol by fermenting the tail gas of the first set of ferroalloy industry in the world. Solves or partially solves the technical problem of the optimal adjustment of the concentration of the carbon monoxide in the raw material gas required by the tail gas fermentation of the existing ferroalloy industry.
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 tail gas recovery device for ferroalloy industrial tail gas fermentation according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for fermenting ferroalloy industrial tail gas provided by an embodiment of the invention;
the reference numerals are explained below:
1-raw material gas buffer device, 2-fermentation device, 3-gas-liquid separator, 4-tail gas recovery pipeline, 5-concentration regulating component,
51-control unit, 52-concentration meter, 53-regulating valve.
Detailed Description
The embodiment of the application provides a tail gas recovery equipment of ferroalloy industry tail gas fermentation, has solved metallurgical ironmaking among the prior art and has lacked a technical problem who is used for experimental apparatus of flue gas desulfurization denitration.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
as a typical implementation manner of the embodiments of the present application, there is provided a tail gas recovery device for ferroalloy industrial tail gas fermentation, as shown in fig. 1, including:
raw material gas buffer device 1: the method is used for purifying the ferroalloy industrial tail gas to obtain raw material gas;
the fermentation device 2: the fermentation system is used for fermenting by adopting the feed gas and the inner thalli to obtain fermentation liquor and fermentation tail gas with liquid drops; the fermentation device comprises a gas inlet, a liquid inlet and a gas outlet, and the gas inlet of the fermentation device is communicated with the gas outlet of the raw material gas buffer device;
a gas-liquid separator 3: the device is used for carrying out gas-liquid separation on the fermentation tail gas with the liquid drops to obtain the liquid drops and the fermentation tail gas; the gas-liquid separator comprises a gas inlet, a liquid outlet and a gas outlet, the gas inlet of the gas-liquid separator is communicated with the gas outlet of the fermentation device, and the liquid outlet of the gas-liquid separator is communicated with the liquid inlet of the fermentation device;
tail gas recovery pipeline 4: the tail gas recovery pipeline is used for returning the fermentation tail gas to the feed gas buffer device, one end of the tail gas recovery pipeline is communicated with a gas outlet of the gas-liquid separator, and the other end of the tail gas recovery pipeline is communicated with an inlet of the feed gas buffer device;
concentration adjusting component 5: the tail gas recovery pipeline is used for controlling the concentration of fermentation tail gas in the tail gas recovery pipeline; the concentration adjusting assembly 5 includes: the control unit 51 with all set up in last concentration meter 52 and the governing valve 53 of tail gas recovery pipeline, the concentration meter 52 with governing valve 53 all with the control unit 51 electricity is connected, the measured value of concentration meter 52 is converted into electric signal transmission and is given control unit 51, the control unit 51 control the aperture automatically regulated of governing valve 53 fermentation tail gas concentration in the tail gas recovery pipeline.
Purifying ferroalloy industrial tail gas, introducing the purified ferroalloy industrial tail gas into a fermentation device, fermenting by adopting the raw material gas and the inner thalli to obtain fermentation liquor and fermentation tail gas with liquid drops, and carrying out gas-liquid separation on the fermentation tail gas with the liquid drops to obtain the liquid drops and the fermentation tail gas; be equipped with concentration meter and governing valve in tail gas recovery pipeline, the measured value of concentration meter is converted into the signal of telecommunication and is transmitted the control unit, the control unit control the aperture automatically regulated of governing valve fermentation tail gas concentration in the tail gas recovery pipeline. When the concentration of carbon monoxide in the raw material gas pipeline is monitored on line, the tail gas return flow is improved through the adjustment of the control unit, otherwise, the tail gas return flow is reduced through automatic adjustment, and therefore the concentration of carbon monoxide in the raw material gas is stable.
As another exemplary embodiment of the embodiments of the present application, there is provided a tail gas recovery apparatus for fermentation of ferroalloy industrial tail gas, as shown in fig. 2, the method including:
s1, purifying the ferroalloy industrial tail gas to obtain raw material gas;
s2, fermenting by adopting the raw material gas and the inner thalli to obtain fermentation liquor and fermentation tail gas with liquid drops;
s3, carrying out gas-liquid separation on the fermentation tail gas with the liquid drops to obtain the liquid drops and the fermentation tail gas;
and S4, introducing the fermentation tail gas into the ferroalloy industrial tail gas for purification treatment together for circulation.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Also, the appearances of the phrases "in" and "out" in this document are not necessarily all referring to the same embodiment, but are to be construed broadly and encompass both forms.
Example (b):
as shown in fig. 1, in this embodiment, an apparatus for recovering tail gas from fermentation of ferroalloy industrial tail gas includes:
raw material gas buffer device 1: the method is used for purifying the ferroalloy industrial tail gas to obtain raw material gas;
the fermentation device 2: the fermentation system is used for fermenting by adopting the feed gas and the inner thalli to obtain fermentation liquor and fermentation tail gas with liquid drops; the fermentation device comprises a gas inlet, a liquid inlet and a gas outlet, and the gas inlet of the fermentation device is communicated with the gas outlet of the raw material gas buffer device;
a gas-liquid separator 3: the device is used for carrying out gas-liquid separation on the fermentation tail gas with the liquid drops to obtain the liquid drops and the fermentation tail gas; the gas-liquid separator comprises a gas inlet, a liquid outlet and a gas outlet, the gas inlet of the gas-liquid separator is communicated with the gas outlet of the fermentation device, and the liquid outlet of the gas-liquid separator is communicated with the liquid inlet of the fermentation device;
tail gas recovery pipeline 4: the tail gas recovery pipeline is used for returning the fermentation tail gas to the feed gas buffer device, one end of the tail gas recovery pipeline is communicated with a gas outlet of the gas-liquid separator, and the other end of the tail gas recovery pipeline is communicated with an inlet of the feed gas buffer device;
concentration adjusting component 5: the tail gas recovery pipeline is used for controlling the concentration of fermentation tail gas in the tail gas recovery pipeline; the concentration adjusting assembly 5 includes: the control unit 51 with all set up in last concentration meter 52 and the governing valve 53 of tail gas recovery pipeline, the concentration meter 52 with governing valve 53 all with the control unit 51 electricity is connected, the measured value of concentration meter 52 is converted into electric signal transmission and is given control unit 51, the control unit 51 control the aperture automatically regulated of governing valve 53 fermentation tail gas concentration in the tail gas recovery pipeline.
As an alternative embodiment, the raw material gas buffering device 1 includes:
raw material gas buffer tank body: the device is used for collecting the ferroalloy industrial tail gas; specifically, the material of the raw material gas buffer tank body can be selected from proper stainless steel or carbon steel,
a raw material gas purification unit: the system is used for purifying the ferroalloy industrial tail gas to obtain raw material gas; the feed gas purification unit is arranged in the feed gas buffer tank body.
Pressure detector and thermodetector, pressure detector and thermodetector all set up in this is internal to the raw materials gas buffer tank, be used for right the pressure and the temperature of raw materials gas monitor.
As an alternative embodiment, the fermentation device 2 comprises:
fermentation tank: the fermentation system is used for fermenting by adopting the feed gas and the inner thalli to obtain fermentation liquor and fermentation tail gas with liquid drops; the fermentation tank comprises a gas inlet, a liquid outlet and a gas outlet, and the gas inlet of the fermentation device is communicated with the gas outlet of the raw material gas buffer device; specifically, the inner thallus specifically comprises anaerobic clostridium, and raw materials required for fermentation specifically comprise various nutrient salts, chemicals and vitamins required by the thallus.
A purification unit: purifying and separating the fermentation liquor to obtain ethanol and mycoprotein; the inlet of the purification unit is in communication with the liquid outlet of the fermentor. Specifically, the purification method comprises the following steps: distilling and purifying, and spray drying protein.
As an alternative embodiment, the control unit 51 is a PID controller or a DCS system.
The following further describes the method of using the ferroalloy industrial tail gas fermentation equipment shown in FIG. 1.
Introducing the ferroalloy industrial tail gas into a raw gas buffer device 1 for purification treatment to remove impurities, and obtaining raw gas; the temperature of the feed gas is 25-35 ℃, and the pressure is less than 0.7 MPa. The reason for controlling the temperature of the feed gas within the range is: the temperature of the feed gas is controlled to be close to the optimum temperature for the thallus fermentation, so that the energy consumption of the whole process is saved, and the influence of the feed gas on the thallus activity is reduced; too low or too high temperature affects the activity of the thallus and causes energy waste.
The raw material gas is introduced into the fermentation device 2, and raw and auxiliary materials such as inner thallus nutritive salt in the fermentation device 2 are fermented to obtain fermentation liquor and fermentation tail gas with liquid drops;
introducing the fermentation tail gas with the liquid drops into the gas-liquid separator 3 for gas-liquid separation to obtain the liquid drops and the fermentation tail gas;
in the liquid drop returns fermenting installation 2 after gathering in vapour and liquid separator 3, the fermentation tail gas that comes out from vapour and liquid separator 3 gets into feed gas buffer 1 through tail gas recovery pipeline 4, is equipped with concentration meter 52 and governing valve 53 in tail gas recovery pipeline 4, the measured value of concentration meter is converted into the signal of telecommunication and is given the control unit, the control unit control the aperture automatically regulated of governing valve fermentation tail gas concentration in the tail gas recovery pipeline. When the concentration of carbon monoxide in the raw material gas pipeline is monitored on line, the tail gas return flow is improved through the adjustment of the control unit, otherwise, the tail gas return flow is reduced through automatic adjustment, and therefore the concentration of carbon monoxide in the raw material gas is stable.
The technical scheme in the embodiment of the application at least comprises the following technical effects or advantages:
according to the tail gas recovery device and method for ferroalloy industrial tail gas fermentation, the trend of the tail gas of the fermentation tank is optimized and adjusted to realize flexible adjustment of the raw material gas, a third medium is not introduced, resource waste is not caused, and the requirements of a global first set of ferroalloy industrial tail gas fermentation ethanol preparation process are met. Solves or partially solves the technical problem of the optimal adjustment of the concentration of the carbon monoxide in the raw material gas required by the tail gas fermentation of the existing ferroalloy industry.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the embodiments of the present invention and their equivalents, the embodiments of the present invention are also intended to encompass such modifications and variations.
Claims (9)
1. The utility model provides a tail gas recovery plant of ferroalloy industry tail gas fermentation which characterized in that includes:
the raw material gas buffer device is used for purifying the ferroalloy industrial tail gas to obtain raw material gas and comprises a gas inlet and a gas outlet;
the fermentation device is used for fermenting by adopting the feed gas and the inner thalli to obtain fermentation liquor and fermentation tail gas with liquid drops; the fermentation device comprises a gas inlet, a liquid inlet and a gas outlet, and the gas inlet of the fermentation device is communicated with the gas outlet of the raw material gas buffer device;
the gas-liquid separator is used for carrying out gas-liquid separation on the fermentation tail gas with the liquid drops to obtain the liquid drops and the fermentation tail gas; the gas-liquid separator comprises a gas inlet, a liquid outlet and a gas outlet, the gas inlet of the gas-liquid separator is communicated with the gas outlet of the fermentation device, and the liquid outlet of the gas-liquid separator is communicated with the liquid inlet of the fermentation device;
a tail gas recovery pipeline for returning the fermentation tail gas to the raw gas buffer device, wherein one end of the tail gas recovery pipeline is communicated with the gas outlet of the gas-liquid separator, and the other end of the tail gas recovery pipeline is communicated with the gas inlet of the raw gas buffer device;
the concentration adjusting component is used for controlling the concentration of the fermentation tail gas in the tail gas recovery pipeline; the concentration adjustment assembly comprises: the control unit with set up respectively in last concentration meter and the governing valve of tail gas recovery pipeline, the concentration meter with the governing valve respectively with the control unit electricity is connected, the measured value of concentration meter is converted the signal of telecommunication and is given the control unit, the control unit control the aperture of governing valve is with automatically regulated fermentation tail gas concentration in the tail gas recovery pipeline.
2. The tail gas recovery device for ferroalloy industrial tail gas fermentation as claimed in claim 1, wherein the feed gas buffer device comprises:
raw material gas buffer tank body: the device is used for collecting the ferroalloy industrial tail gas;
a raw material gas purification unit: the system is used for purifying the ferroalloy industrial tail gas to obtain raw material gas; the feed gas purification unit is arranged in the feed gas buffer tank body.
3. The tail gas recovery device for ferroalloy industrial tail gas fermentation as claimed in claim 2, wherein the raw gas buffer device further comprises: pressure detector and thermodetector, pressure detector and thermodetector set up respectively in this is internal to the raw materials gas buffer tank, be used for right the pressure and the temperature of raw materials gas monitor.
4. An apparatus for recovering tail gas from fermentation of ferroalloy industrial tail gas as claimed in claim 1, wherein the fermentation device comprises:
fermentation tank: the fermentation system is used for fermenting by adopting the feed gas and the inner thalli to obtain fermentation liquor and fermentation tail gas with liquid drops; the fermentation tank comprises a gas inlet, a liquid outlet and a gas outlet, and the gas inlet of the fermentation device is communicated with the gas outlet of the raw material gas buffer device;
a purification unit: purifying and separating the fermentation liquor to obtain ethanol and mycoprotein; the purifier unit has an inlet and an outlet, the inlet of the purifier unit being in communication with the liquid outlet of the fermentor.
5. The tail gas recovery device for ferroalloy industrial tail gas fermentation of claim 1, wherein the control unit is a PID regulator or a DCS system.
6. A method for fermenting ferroalloy industrial tail gas, which is characterized by comprising the following steps:
purifying the ferroalloy industrial tail gas to obtain raw material gas;
fermenting by adopting the feed gas and the inner thalli to obtain fermentation liquor and fermentation tail gas with liquid drops;
carrying out gas-liquid separation on the fermentation tail gas with the liquid drops to obtain the liquid drops and the fermentation tail gas;
and introducing the fermentation tail gas into the ferroalloy industrial tail gas for purification treatment together for circulation.
7. The method for fermenting the tail gas in the ferroalloy industry according to claim 6, wherein the temperature of the raw gas is 25-35 ℃, and the pressure is less than 0.7 MPa.
8. The method for fermenting the tail gas in the ferroalloy industry according to claim 6, wherein the fermentation temperature is 25-45 ℃, the pressure is less than 0.6MPa, and the liquid level is 70-90%.
9. The method for fermenting the tail gas in the ferroalloy industry according to claim 6, wherein in the gas-liquid separation, the pressure is less than 0.6MPa, and the liquid level is 20-80%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110027768.8A CN112755743A (en) | 2021-01-11 | 2021-01-11 | Tail gas recovery equipment and method for ferroalloy industrial tail gas fermentation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113477078A (en) * | 2021-07-27 | 2021-10-08 | 彭万红 | Microbial fermentation tail gas treatment device and method for biological product |
| CN113773953A (en) * | 2021-09-16 | 2021-12-10 | 宁夏首朗吉元新能源科技有限公司 | Fermentation tail gas cyclic utilization device |
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| CN113477078A (en) * | 2021-07-27 | 2021-10-08 | 彭万红 | Microbial fermentation tail gas treatment device and method for biological product |
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