CN113797724A - Purification and deodorization system and method for environment-friendly waste gas treatment - Google Patents

Purification and deodorization system and method for environment-friendly waste gas treatment Download PDF

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Publication number
CN113797724A
CN113797724A CN202111225245.0A CN202111225245A CN113797724A CN 113797724 A CN113797724 A CN 113797724A CN 202111225245 A CN202111225245 A CN 202111225245A CN 113797724 A CN113797724 A CN 113797724A
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gas flow
purification device
gas
delta
preset
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孟峰
吴莹
门永红
黄攀丽
杜宇
赵骊媛
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Shaoxing Environmental Protection Technology Service Center
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Shaoxing Environmental Protection Technology Service Center
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/30—Controlling by gas-analysis apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/52—Hydrogen sulfide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/54—Nitrogen compounds
    • B01D53/58—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/84—Biological processes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

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  • Life Sciences & Earth Sciences (AREA)
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Abstract

The invention has proposed a environmental protection waste gas treatment uses purifying and deodorizing system and method, the inlet end of the purification unit is communicated with exhaust gas collecting device, the outlet end of the purification unit is communicated with exhaust gas discharge device; the purification unit comprises a first purification device, a second purification device and a third purification device; the control unit comprises an acquisition module, a processing module and a control module, wherein the processing module is also used for controlling the opening state of each purification device in real time according to the gas flow information in the gas inlet pipeline, and adjusting the opening state of each purification device in real time according to the gas flow difference between the gas inlet end and the gas outlet end of the purification device in the opening state. Through setting up the purification deodorization of a plurality of purifier cooperatees carrying on waste gas and handling, through the gas information in the real-time monitoring exhaust emission pipeline of the control unit and purifier's inlet end and the gas flow information of the end of giving vent to anger, can not only greatly improve the treatment effect of waste gas, can also greatly improve the purification deodorization efficiency of waste gas.

Description

Purification and deodorization system and method for environment-friendly waste gas treatment
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to a purification and deodorization system and method for environment-friendly waste gas treatment.
Background
Currently, the current deodorization processes are classified into chemical absorption, physical adsorption, ion, plant extract spraying, biological, and active oxygen methods. The biological method treatment technology is that organic components in waste gas are used as energy sources or other nutrients for life activities of microorganisms, and the organic components are converted into simple inorganic matters (CO) through metabolic degradation2Water, etc.) and cell constituent substances. The biological method treatment technology comprises the following steps: soil method, biological filter bed, etc., wherein the biological filter bed is the most mature and widely applied.
Meanwhile, the odor belongs to the gas with large air volume and low concentration, the active oxygen method mainly aims at the condition of small air volume, the equipment is in parallel connection or series connection of a plurality of groups, and the odor treatment is not applicable, so the active oxygen method is eliminated; the plant extract spraying method has a common treatment effect and high operation cost, so the plant extract spraying method is eliminated; the chemical absorption method can treat gases with high and medium concentration in the atmosphere, has high purification efficiency, but has high investment and operation cost, harsh control conditions and secondary pollution, and the treatment of the absorbed chemical waste liquid becomes a problem, so the method is also not suitable; the physical adsorption method can solve the above gas treatment, however, when the odor with larger gas quantity is faced, the operation cost is higher if the physical adsorption method is adopted. Therefore, the biological method is suitable for treating the odor gas with large air quantity and low concentration, and has the advantages of wide range of treating gas, high treating efficiency, low investment and operation cost and no secondary pollution.
During the operation of the sewage treatment station, malodorous pollutants are generated due to the metabolism of microorganisms, protozoa, bacteria and the like, and the main component of the malodorous pollutants is H2S、NH3And the like. The links of generating the stink are mainly as follows: a pretreatment unit such as a grating, a sedimentation tank and the like, an activated sludge biological treatment unit, a sludge storage tank, a dehydration machine room and other sludge treatment units. The effulgent escape quantity, the sewage receiving quantity and BOD of the sewage treatment station5Load, DO in sewage, sludge amount and accumulation amount, pollution meteorological characteristics and the like. The diffusion and attenuation process of the malodor is mainly physical dilution attenuation of three-dimensional space diffusion and chemical destructive attenuation of sunshine ultraviolet factors for a certain time.
Most of the existing sewage treatment stations discharge waste gas organically, and the discharged waste gas mainly comprises foul smell (including hydrogen sulfide and ammonia) generated by a coarse grating, a fine grating, a hydrolysis regulating tank, an accident tank and a sludge dewatering machine room. In addition, the current coarse grids, the current fine grids, the current hydrolysis regulating tank and the current accident tank are sealed, generated malodorous gas is completely collected through a pipeline, a dewaterer of a sludge dewatering plant is sealed by a cover, sludge belt conveying is sealed, a sludge dumping port is provided with a gas collecting cover, and waste gas of the sludge dewatering plant is collected through the gas collecting cover; the pipeline and the exhaust gas collected by the gas collecting hood are collected together and then discharged. How to effectively purify and deodorize the collected waste gas becomes the problem which is urgently needed to be solved at present.
Disclosure of Invention
In view of this, the invention provides a purification and deodorization system and method for environmental protection waste gas treatment, and aims to solve the problem of how to perform efficient purification and deodorization treatment on waste gas discharged from a sewage treatment station.
In one aspect, the invention provides a purification and deodorization system for environmental protection waste gas treatment, which comprises a purification unit and a control unit;
the air inlet end of the purification unit is communicated with the waste gas collection device through an air inlet pipeline, the air outlet end of the purification unit is communicated with the waste gas discharge device through an air outlet pipeline, and the purification unit is used for carrying out purification and deodorization on the waste gas collected by the waste gas collection device so as to discharge the waste gas through the waste gas discharge device; wherein the content of the first and second substances,
the purification unit comprises a first purification device, a second purification device and a third purification device, wherein the first purification device, the second purification device and the third purification device are arranged between the air inlet pipeline and the air outlet pipeline in a parallel connection mode, the air inlet end of the first purification device is provided with a first electromagnetic valve and a first front end gas flowmeter, the air outlet end of the first purification device is provided with a first rear end gas flowmeter, the air inlet end of the second purification device is provided with a second electromagnetic valve and a second front end gas flowmeter, the air outlet end of the second purification device is provided with a second rear end gas flowmeter, the air inlet end of the third purification device is provided with a third electromagnetic valve and a third front end gas flowmeter, and the air outlet end of the third purification device is provided with a third rear end gas flowmeter; a hydrogen sulfide concentration detector, an ammonia concentration detector and a total gas flowmeter are arranged on the gas inlet pipeline;
the control unit comprises an acquisition module, a processing module and a control module, wherein the acquisition module is respectively and electrically connected with the three front-end gas flowmeters, the three rear-end gas flowmeters, the hydrogen sulfide concentration detector, the ammonia concentration detector and the total gas flowmeter; the control module is used for being electrically connected with the three electromagnetic valves respectively so as to control the opening and closing of the three electromagnetic valves; the processing module is used for receiving the hydrogen sulfide concentration information, the ammonia concentration information and the gas flow information which are acquired by the acquisition module;
the processing module is further used for controlling the opening state of each purification device in real time according to the gas flow information in the gas inlet pipeline, and adjusting the opening state of each purification device in real time according to the difference value between the gas flow information of the gas inlet end and the gas flow information of the gas outlet end of the purification device in the opening state.
Further, the processing module is further configured to set a first preset total gas flow rate a1, a second preset total gas flow rate a2, a third preset total gas flow rate A3 and a fourth preset total gas flow rate a4, wherein a1 < a2 < A3 < a 4;
the processing module is further configured to obtain a real-time total gas flow Δ a in the gas inlet pipeline in real time, and control an opening state of each purification device according to a relationship between the real-time total gas flow Δ a and each preset total gas flow:
when the delta A is less than or equal to A1, only the first purification device is started;
when A1 is more than delta A and less than or equal to A2, only the second purification device is started;
when A2 is more than delta A and less than or equal to A3, only the first purification device and the second purification device are started;
when A3 is more than delta A and less than or equal to A4, the first purification device, the second purification device and the third purification device are started simultaneously.
Further, the processing module is further configured to set a first preset gas flow difference z1, a second preset gas flow difference z2, a third preset gas flow difference z3, and a fourth preset gas flow difference z4, wherein z1 < z2 < z3 < z 4;
the processing module is further configured to obtain a front-end real-time gas flow Δ B11 and a rear-end real-time gas flow Δ B12 of the first purification apparatus in real time, obtain a front-end real-time gas flow Δ B21 and a rear-end real-time gas flow Δ B22 of the second purification apparatus in real time, and obtain a front-end real-time gas flow Δ B31 and a rear-end real-time gas flow Δ B32 of the third purification apparatus in real time;
the processing module is further used for adjusting the starting state of each purification device according to the relationship between the gas flow difference value between the gas inlet end and the gas outlet end of each purification device and each preset gas flow difference value;
when Δ A ≦ A1 and only the first purification apparatus is turned on:
if delta B11-delta B12 is less than or equal to z1, only the first purification device is continuously kept in an opening state;
if z1 is more than or equal to delta B11-delta B12 and less than or equal to z2, the first purification device is closed, and only the second purification device is opened;
if z2 is more than or equal to delta B11-delta B12 and less than or equal to z3, then the second purification device is started, and the first purification device and the second purification device are simultaneously in a starting state;
and if z3 is more than or equal to delta B11-delta B12 and less than or equal to z4, the second purification device and the third purification device are started at the moment, so that the first purification device, the second purification device and the third purification device are simultaneously in a starting state.
Further, the processing module is also used for when A1 < Δ A ≦ A2 and only the second purifying device is turned on:
if delta B21-delta B22 is not less than z1, then the first purification device is started, and when delta B11-delta B12 is not less than z1, the second purification device is closed, only the first purification device is started, and when z1 is more than delta B11-delta B12 is not less than z2, the first purification device is closed, only the second purification device is started;
if z1 < Δ B21- Δ B22 ≦ z2, continuing to keep only the second purification device in the open state;
if z2 is more than or equal to delta B21-delta B22 and less than or equal to z3, the first purification device and the second purification device are started simultaneously;
and if z3 is more than or equal to delta B21-delta B22 and less than or equal to z4, the first purification device, the second purification device and the third purification device are simultaneously started.
Further, the processing module is also used for when A2 < Δ A ≦ A3 and only the first and second purging devices are turned on:
if delta B11-delta B12 is less than or equal to z1 or delta B21-delta B22 is less than or equal to z1, only the first purification device and the second purification device are continuously opened at the moment;
if z1 is less than delta B11-delta B12 and z1 is less than delta B21-delta B22 is less than or equal to z2, then the first purification device is closed, and the third purification device is opened, so that the second purification device and the third purification device are in an open state at the same time;
and if z2 is less than delta B21-delta B22, then the third purification device is started, and the first purification device, the second purification device and the third purification device are simultaneously in a starting state.
Furthermore, an electric regulating valve is arranged on the air inlet pipeline and used for regulating the gas flow in the air inlet pipeline, and the electric regulating valve is electrically connected with the control module;
the processing module is further used for setting a first preset gas inlet pipeline gas flow L1, a second preset gas inlet pipeline gas flow L2, a third preset gas inlet pipeline gas flow L3 and a fourth preset gas inlet pipeline gas flow L4, wherein L1 is more than L2, and L3 is more than L4;
the processing module is further configured to, after the first purification device, the second purification device and the third purification device are simultaneously turned on, set the gas flow rate in the gas inlet pipeline in real time according to a relationship between a difference between a front-end real-time gas flow rate Δ B31 and a rear-end real-time gas flow rate Δ B32 of the third purification device and each of the preset gas flow rate differences:
when delta B31-delta B32 is less than or equal to z1, selecting the first preset gas inlet pipeline gas flow L1 as the gas flow in the gas inlet pipeline;
when z1 is more than or equal to delta B31-delta B32 is less than or equal to z2, selecting the second preset gas inlet pipeline gas flow L2 as the gas flow in the gas inlet pipeline;
when z2 is more than or equal to delta B31-delta B32 is less than or equal to z3, selecting the third preset gas inlet pipeline gas flow L3 as the gas flow in the gas inlet pipeline;
when z3 is more than or equal to delta B31-delta B32 is less than or equal to z4, selecting the fourth preset gas inlet pipeline gas flow L4 as the gas flow in the gas inlet pipeline;
when the ith preset air inlet pipeline air flow rate Li is selected as the air flow rate in the air inlet pipeline, i is 1, 2, 3 and 4, and the opening degree of the electric control valve is adjusted through the control module, so that the air flow rate in the air inlet pipeline is the ith preset air inlet pipeline air flow rate Li.
Further, the processing module is further configured to set a first preset hydrogen sulfide concentration C1, a second preset hydrogen sulfide concentration C2, a third preset hydrogen sulfide concentration C3, and a fourth preset hydrogen sulfide concentration C4, where C1 < C2 < C3 < C4; the processing module is also used for setting a first preset correction coefficient y1, a second preset correction coefficient y2, a third preset correction coefficient y3 and a fourth preset correction coefficient y4, and the number of the preset correction coefficients is 1 & gt y1 & gt y2 & gt y3 & gt y4 & gt 0.8;
the processing module is further configured to obtain a real-time hydrogen sulfide concentration Δ C in the intake duct in real time, and select a correction coefficient according to a relationship between the real-time hydrogen sulfide concentration Δ C and each of the preset hydrogen sulfide concentrations, so as to correct the ith preset intake duct gas flow Li in the intake duct:
when the delta C is less than or equal to C1, selecting the first preset correction coefficient y1 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y1 as the gas flow in the gas inlet pipeline;
when delta C is more than C1 and less than or equal to C2, selecting the second preset correction coefficient y2 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y2 as the gas flow in the gas inlet pipeline;
when delta C is more than C2 and less than or equal to C3, selecting the third preset correction coefficient y3 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y3 as the gas flow in the gas inlet pipeline;
and when the delta C is more than C3 and less than or equal to C4, selecting the fourth preset correction coefficient y4 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y4 as the gas flow in the gas inlet pipeline.
Further, the processing module is further configured to set a first preset ammonia gas concentration D1, a second preset ammonia gas concentration D2, a third preset ammonia gas concentration D3, and a fourth preset ammonia gas concentration D4, where D1 < D2 < D3 < D4; the processing module is further used for setting a first preset compensation coefficient x1, a second preset compensation coefficient x2, a third preset compensation coefficient x3 and a fourth preset compensation coefficient x4, and 1 > x1 > x2 > x3 > x4 > 0.8;
the processing module is further configured to, after the ith preset correction coefficient yi is selected to correct the ith preset intake duct gas flow Li which is the gas flow in the intake duct, obtain a real-time ammonia concentration Δ D in the intake duct in real time, and select a compensation coefficient according to a relationship between the real-time ammonia concentration Δ D and each of the preset ammonia concentrations, so as to compensate the corrected intake duct gas flow Li yi in the intake duct:
when the delta D is less than or equal to D1, selecting the first preset compensation coefficient x1, compensating the corrected gas flow Li x yi of the gas inlet pipeline in the gas inlet pipeline, and taking the compensated gas flow Li x y1 as the gas flow in the gas inlet pipeline;
when D1 is larger than and delta D is smaller than or equal to D2, selecting the second preset compensation coefficient x2, compensating the corrected gas flow rate Li x yi of the gas inlet pipeline in the gas inlet pipeline, and taking the compensated gas flow rate Li x2 as the gas flow rate in the gas inlet pipeline;
when D2 is larger than and delta D is smaller than or equal to D3, selecting the third preset compensation coefficient x3, compensating the corrected gas flow rate Li x yi of the gas inlet pipeline in the gas inlet pipeline, and taking the compensated gas flow rate Li x3 as the gas flow rate in the gas inlet pipeline;
and when D3 is larger than delta D and is not larger than D4, selecting the fourth preset compensation coefficient x4, compensating the corrected gas flow rate Li x yi of the gas inlet pipeline, and taking the compensated gas flow rate Li x4 as the gas flow rate in the gas inlet pipeline.
Further, the first purifying device, the second purifying device and the third purifying device are all biological filter beds.
Compared with the prior art, the intelligent exhaust gas purification device has the advantages that the purification and deodorization treatment of the exhaust gas is carried out by the cooperation of the purification devices, the control unit monitors the gas information in the exhaust gas discharge pipeline and the gas flow information of the gas inlet end and the gas outlet end of the purification devices in real time, and the opening state of each purification device is intelligently controlled, so that the treatment effect of the exhaust gas can be greatly improved, the purification and deodorization efficiency of the exhaust gas can be greatly improved, the labor input is reduced, and the cost in the exhaust gas treatment process is greatly saved.
On the other hand, the invention also provides a purification and deodorization method for environment-friendly waste gas treatment, which is implemented by adopting the purification and deodorization system for environment-friendly waste gas treatment and comprises the following steps:
acquiring hydrogen sulfide concentration information, ammonia concentration information and gas flow information in a gas inlet pipeline;
acquiring gas flow information of a gas inlet end and a gas outlet end of a purifying device;
and controlling the opening state of each purification device according to the gas flow information in the gas inlet pipeline, and adjusting the opening state of each purification device in real time according to the difference value between the gas flow information of the gas inlet end and the gas flow information of the gas outlet end of the purification device in the opening state.
It can be understood that the above-mentioned purification and deodorization method for treating environmental protection waste gas has the same beneficial effects as the purification and deodorization system for treating environmental protection waste gas, and the details are not repeated herein.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic structural view of a purification and deodorization system for treating environmental protection waste gas according to an embodiment of the present invention;
FIG. 2 is a functional block diagram of a purification and deodorization system for treating environmental protection waste gas according to an embodiment of the present invention;
FIG. 3 is a flow chart of a purification and deodorization method for treating environmental protection exhaust gas according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The deodorization principle of the biological filter in the implementation is as follows: the principle of the deodorization process by using the biological filter tank method is to utilize microorganismsThe biological degradation of the odor substance can absorb and degrade the odor substance so as to achieve the aim of deodorization. The odor is decomposed into CO after being adsorbed by the wet and porous filter layer filled with active microorganisms by utilizing the adsorption, absorption and degradation functions of microbial cells on the odor substances, and the characteristics of small cells, large surface area, strong adsorbability and various metabolic types of the microorganisms2、H2O、H2SO4、HNO3And the like. The biological filter method has high deodorization efficiency and is suitable for the treatment of waste gas with large air quantity and low concentration.
Referring to fig. 1, the present embodiment provides a purification and deodorization system for environmental protection exhaust gas treatment, including a purification unit and a control unit.
Specifically, the air inlet end of the purification unit is communicated with a waste gas collecting device through an air inlet pipeline 4, the waste gas collecting device is a gas collecting hood in sewage treatment, and waste gas in the sewage treatment station is uniformly collected through the gas collecting hood and then discharged.
Specifically, the end of giving vent to anger of purification unit is linked together through outlet pipe 5 and exhaust emission device 6, the purification unit is used for to after the waste gas that the exhaust gas collection device was collected purified and deodorized, with through exhaust emission device 6 carries out exhaust emission. The exhaust gas discharge device 6 is an exhaust funnel or a chimney.
Specifically, the purification unit comprises a first purification device 1, a second purification device 2 and a third purification device 3, wherein the first purification device 1, the second purification device 2 and the third purification device 3 are arranged between the air inlet pipeline 4 and the air outlet pipeline 5 in a parallel connection mode, and the first purification device 1, the second purification device 2 and the third purification device 3 are respectively communicated with the air inlet pipeline 4 and the air outlet pipeline 5 through pipelines.
Specifically, a first electromagnetic valve 11 and a first front end gas flowmeter 12 are provided at the air inlet end of the first purification device 1, and a first rear end gas flowmeter 13 is provided at the air outlet end of the first purification device 1. The first electromagnetic valve 11 is used for controlling whether to convey the exhaust gas into the first purification apparatus 1 or not so as to control the open state of the first purification apparatus 1. The first front end gas flowmeter 12 is used for acquiring gas flow information of the gas inlet end of the first purification device 1, and the first rear end gas flowmeter 13 is used for acquiring gas flow information of the gas outlet end of the first purification device 1.
Specifically, the inlet end of the second purification apparatus 2 is provided with a second electromagnetic valve 21 and a second front end gas flow meter 22, and the outlet end of the second purification apparatus 2 is provided with a second rear end gas flow meter 23. The second electromagnetic valve 21 is used to control whether to deliver the exhaust gas into the second purification apparatus 2, so as to control the open state of the second purification apparatus 2. The second front end gas flowmeter 22 is configured to collect gas flow information at the gas inlet end of the second purification apparatus 2, and the second rear end gas flowmeter 23 is configured to collect gas flow information at the gas outlet end of the second purification apparatus 2.
Specifically, a third electromagnetic valve 31 and a third front end gas flow meter 32 are provided at the air inlet end of the third purification device 3, and a third rear end gas flow meter 33 is provided at the air outlet end of the third purification device 3. The third electromagnetic valve 31 is used for controlling whether to deliver the exhaust gas into the third purification apparatus 3, so as to control the open state of the third purification apparatus 3. The third front end gas flow meter 32 is used for acquiring gas flow information of the gas inlet end of the third purification apparatus 3, and the third rear end gas flow meter 33 is used for acquiring gas flow information of the gas outlet end of the third purification apparatus 3.
Specifically, the intake duct 4 is provided with a hydrogen sulfide concentration detector 8, an ammonia concentration detector 9, and a total gas flow meter 7.
Specifically, the first purification apparatus 1, the second purification apparatus 2, and the third purification apparatus 3 are all biofilters.
Specifically, an electric control valve 10 is further disposed on the air inlet pipe 4, the electric control valve 10 is used for adjusting the gas flow in the air inlet pipe, and the electric control valve 10 is electrically connected with the control module.
Referring to fig. 2, specifically, the control unit includes an acquisition module, a processing module, and a control module, where the acquisition module is electrically connected to three front-end gas flow meters, three rear-end gas flow meters, a hydrogen sulfide concentration detector 8, an ammonia concentration detector 9, and a total gas flow meter 7, respectively; the control module is used for being electrically connected with the three electromagnetic valves respectively so as to control the opening and closing of the three electromagnetic valves; the processing module is used for receiving the hydrogen sulfide concentration information, the ammonia concentration information and the gas flow information which are acquired by the acquisition module.
Specifically, the processing module is further configured to control the opening state of each purification device in real time according to the gas flow information in the gas inlet pipe 4, and adjust the opening state of each purification device in real time according to a difference between the gas flow information at the gas inlet end and the gas flow information at the gas outlet end of the purification device in the opening state.
It can be seen that this embodiment is through setting up the purification deodorization of a plurality of purifier cooperatees and handling of carrying on waste gas, can improve the purification deodorization effect and the efficiency of waste gas effectively.
Further, through the real-time gas information in the monitoring exhaust emission pipeline of the control unit who sets up and purifier's the inlet end and the gas flow information of the end of giving vent to anger, the state of opening of each purifier of intelligent control, it is concrete, through real-time basis each purifier's of gas flow information control in the inlet pipeline state of opening, and real-time according to the gas flow information of the inlet end of the purifier who is in the state of opening and the difference between the gas flow information of the end of giving vent to anger, adjust each purifier's the state of opening, the treatment effect of waste gas not only can be greatly improved, the purification deodorization efficiency of waste gas can also be greatly improved, the input of manpower is reduced, cost when greatly having practiced thrift exhaust-gas treatment.
Specifically, the processing module is further configured to set a first preset total gas flow rate a1, a second preset total gas flow rate a2, a third preset total gas flow rate A3 and a fourth preset total gas flow rate a4, wherein a1 < a2 < A3 < a 4;
the processing module is further configured to obtain a real-time total gas flow Δ a in the gas inlet pipeline in real time, and control an opening state of each purification device according to a relationship between the real-time total gas flow Δ a and each preset total gas flow:
when the delta A is less than or equal to A1, only the first purification device is started;
when A1 is more than delta A and less than or equal to A2, only the second purification device is started;
when A2 is more than delta A and less than or equal to A3, only the first purification device and the second purification device are started;
when A3 is more than delta A and less than or equal to A4, the first purification device, the second purification device and the third purification device are started simultaneously.
Specifically, the processing module is further configured to set a first preset gas flow difference z1, a second preset gas flow difference z2, a third preset gas flow difference z3, and a fourth preset gas flow difference z4, wherein z1 < z2 < z3 < z 4;
the processing module is further configured to obtain a front-end real-time gas flow Δ B11 and a rear-end real-time gas flow Δ B12 of the first purification apparatus in real time, obtain a front-end real-time gas flow Δ B21 and a rear-end real-time gas flow Δ B22 of the second purification apparatus in real time, and obtain a front-end real-time gas flow Δ B31 and a rear-end real-time gas flow Δ B32 of the third purification apparatus in real time;
the processing module is further used for adjusting the starting state of each purification device according to the relationship between the gas flow difference value between the gas inlet end and the gas outlet end of each purification device and each preset gas flow difference value;
when Δ A ≦ A1 and only the first purification apparatus is turned on:
if delta B11-delta B12 is less than or equal to z1, only the first purification device is continuously kept in an opening state;
if z1 is more than or equal to delta B11-delta B12 and less than or equal to z2, the first purification device is closed, and only the second purification device is opened;
if z2 is more than or equal to delta B11-delta B12 and less than or equal to z3, then the second purification device is started, and the first purification device and the second purification device are simultaneously in a starting state;
and if z3 is more than or equal to delta B11-delta B12 and less than or equal to z4, the second purification device and the third purification device are started at the moment, so that the first purification device, the second purification device and the third purification device are simultaneously in a starting state.
Specifically, the processing module is also used for when A1 < Δ A ≦ A2 and only the second purification device is turned on:
if delta B21-delta B22 is not less than z1, then the first purification device is started, and when delta B11-delta B12 is not less than z1, the second purification device is closed, only the first purification device is started, and when z1 is more than delta B11-delta B12 is not less than z2, the first purification device is closed, only the second purification device is started;
if z1 < Δ B21- Δ B22 ≦ z2, continuing to keep only the second purification device in the open state;
if z2 is more than or equal to delta B21-delta B22 and less than or equal to z3, the first purification device and the second purification device are started simultaneously;
and if z3 is more than or equal to delta B21-delta B22 and less than or equal to z4, the first purification device, the second purification device and the third purification device are simultaneously started.
Specifically, the processing module is also used for when A2 < delta A ≦ A3 and only the first and second purging devices are turned on:
if delta B11-delta B12 is less than or equal to z1 or delta B21-delta B22 is less than or equal to z1, only the first purification device and the second purification device are continuously opened at the moment;
if z1 is less than delta B11-delta B12 and z1 is less than delta B21-delta B22 is less than or equal to z2, then the first purification device is closed, and the third purification device is opened, so that the second purification device and the third purification device are in an open state at the same time;
and if z2 is less than delta B21-delta B22, then the third purification device is started, and the first purification device, the second purification device and the third purification device are simultaneously in a starting state.
Specifically, the processing module is further configured to set a first preset intake manifold gas flow rate L1, a second preset intake manifold gas flow rate L2, a third preset intake manifold gas flow rate L3, and a fourth preset intake manifold gas flow rate L4, where L1 > L2 > L3 > L4;
the processing module is further configured to, after the first purification device, the second purification device and the third purification device are simultaneously turned on, set the gas flow rate in the gas inlet pipeline in real time according to a relationship between a difference between a front-end real-time gas flow rate Δ B31 and a rear-end real-time gas flow rate Δ B32 of the third purification device and each of the preset gas flow rate differences:
when delta B31-delta B32 is less than or equal to z1, selecting the first preset gas inlet pipeline gas flow L1 as the gas flow in the gas inlet pipeline;
when z1 is more than or equal to delta B31-delta B32 is less than or equal to z2, selecting the second preset gas inlet pipeline gas flow L2 as the gas flow in the gas inlet pipeline;
when z2 is more than or equal to delta B31-delta B32 is less than or equal to z3, selecting the third preset gas inlet pipeline gas flow L3 as the gas flow in the gas inlet pipeline;
when z3 is more than or equal to delta B31-delta B32 is less than or equal to z4, selecting the fourth preset gas inlet pipeline gas flow L4 as the gas flow in the gas inlet pipeline;
when the ith preset air inlet pipeline air flow rate Li is selected as the air flow rate in the air inlet pipeline, i is 1, 2, 3 and 4, and the opening degree of the electric control valve is adjusted through the control module, so that the air flow rate in the air inlet pipeline is the ith preset air inlet pipeline air flow rate Li.
Specifically, the processing module is further configured to set a first preset hydrogen sulfide concentration C1, a second preset hydrogen sulfide concentration C2, a third preset hydrogen sulfide concentration C3, and a fourth preset hydrogen sulfide concentration C4, where C1 < C2 < C3 < C4; the processing module is also used for setting a first preset correction coefficient y1, a second preset correction coefficient y2, a third preset correction coefficient y3 and a fourth preset correction coefficient y4, and the number of the preset correction coefficients is 1 & gt y1 & gt y2 & gt y3 & gt y4 & gt 0.8;
the processing module is further configured to obtain a real-time hydrogen sulfide concentration Δ C in the intake duct in real time, and select a correction coefficient according to a relationship between the real-time hydrogen sulfide concentration Δ C and each of the preset hydrogen sulfide concentrations, so as to correct the ith preset intake duct gas flow Li in the intake duct:
when the delta C is less than or equal to C1, selecting the first preset correction coefficient y1 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y1 as the gas flow in the gas inlet pipeline;
when delta C is more than C1 and less than or equal to C2, selecting the second preset correction coefficient y2 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y2 as the gas flow in the gas inlet pipeline;
when delta C is more than C2 and less than or equal to C3, selecting the third preset correction coefficient y3 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y3 as the gas flow in the gas inlet pipeline;
and when the delta C is more than C3 and less than or equal to C4, selecting the fourth preset correction coefficient y4 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y4 as the gas flow in the gas inlet pipeline.
Specifically, the processing module is further configured to set a first preset ammonia gas concentration D1, a second preset ammonia gas concentration D2, a third preset ammonia gas concentration D3, and a fourth preset ammonia gas concentration D4, where D1 < D2 < D3 < D4; the processing module is further used for setting a first preset compensation coefficient x1, a second preset compensation coefficient x2, a third preset compensation coefficient x3 and a fourth preset compensation coefficient x4, and 1 > x1 > x2 > x3 > x4 > 0.8;
the processing module is further configured to, after the ith preset correction coefficient yi is selected to correct the ith preset intake duct gas flow Li which is the gas flow in the intake duct, obtain a real-time ammonia concentration Δ D in the intake duct in real time, and select a compensation coefficient according to a relationship between the real-time ammonia concentration Δ D and each of the preset ammonia concentrations, so as to compensate the corrected intake duct gas flow Li yi in the intake duct:
when the delta D is less than or equal to D1, selecting the first preset compensation coefficient x1, compensating the corrected gas flow Li x yi of the gas inlet pipeline in the gas inlet pipeline, and taking the compensated gas flow Li x y1 as the gas flow in the gas inlet pipeline;
when D1 is larger than and delta D is smaller than or equal to D2, selecting the second preset compensation coefficient x2, compensating the corrected gas flow rate Li x yi of the gas inlet pipeline in the gas inlet pipeline, and taking the compensated gas flow rate Li x2 as the gas flow rate in the gas inlet pipeline;
when D2 is larger than and delta D is smaller than or equal to D3, selecting the third preset compensation coefficient x3, compensating the corrected gas flow rate Li x yi of the gas inlet pipeline in the gas inlet pipeline, and taking the compensated gas flow rate Li x3 as the gas flow rate in the gas inlet pipeline;
and when D3 is larger than delta D and is not larger than D4, selecting the fourth preset compensation coefficient x4, compensating the corrected gas flow rate Li x yi of the gas inlet pipeline, and taking the compensated gas flow rate Li x4 as the gas flow rate in the gas inlet pipeline.
It can be seen that, above-mentioned embodiment not only greatly improves purifier's maintenance cycle through the monitoring and intelligent data processing and purifier's intelligent control to the gas flow information of exhaust gas purification deodorization in-process, can also improve exhaust gas purification deodorization's treatment effect effectively, and the environment has been protected effectively, has still greatly improved exhaust gas purification deodorization efficiency simultaneously, has saved time cost and construction cost.
Referring to fig. 3, in another preferred embodiment based on the above embodiment, the present embodiment provides a purification and deodorization method for environmental protection exhaust gas treatment, and the method of the present embodiment is preferably implemented by using the purification and deodorization system for environmental protection exhaust gas treatment of the above embodiment, and includes the following steps:
step a: acquiring hydrogen sulfide concentration information, ammonia concentration information and gas flow information in a gas inlet pipeline;
step b: acquiring gas flow information of a gas inlet end and a gas outlet end of a purifying device;
step c: and controlling the opening state of each purification device according to the gas flow information in the gas inlet pipeline, and adjusting the opening state of each purification device in real time according to the difference value between the gas flow information of the gas inlet end and the gas flow information of the gas outlet end of the purification device in the opening state.
It can be seen that the purification and deodorization system and method for treating environmental protection exhaust gas in the above embodiments have the same advantages, and are not described herein again.
Specifically, in the step c, the processing module controls the opening state of each purification device in real time according to the gas flow information in the gas inlet pipeline, and adjusts the opening state of each purification device in real time according to the difference between the gas flow information of the gas inlet end and the gas flow information of the gas outlet end of the purification device in the opening state.
It can be seen that the method of the present embodiment can effectively improve the purification and deodorization effects and efficiency of the exhaust gas by arranging a plurality of purification devices to perform the purification and deodorization treatment of the exhaust gas cooperatively.
Specifically, a first preset total gas flow rate A1, a second preset total gas flow rate A2, a third preset total gas flow rate A3 and a fourth preset total gas flow rate A4 are set by the process module, and A1 < A2 < A3 < A4;
the method comprises the following steps of acquiring real-time total gas flow delta A in a gas inlet pipeline in real time through a processing module, and controlling the opening state of each purification device according to the relation between the real-time total gas flow delta A and each preset total gas flow:
when the delta A is less than or equal to A1, only the first purification device is started;
when A1 is more than delta A and less than or equal to A2, only the second purification device is started;
when A2 is more than delta A and less than or equal to A3, only the first purification device and the second purification device are started;
when A3 is more than delta A and less than or equal to A4, the first purification device, the second purification device and the third purification device are started simultaneously.
Specifically, a first preset gas flow difference z1, a second preset gas flow difference z2, a third preset gas flow difference z3 and a fourth preset gas flow difference z4 are set by the process module, and z1 < z2 < z3 < z 4;
the processing module acquires real-time front-end real-time gas flow delta B11 and real-time rear-end gas flow delta B12 of the first purification device, acquires real-time front-end real-time gas flow delta B21 and real-time rear-end gas flow delta B22 of the second purification device, and acquires real-time front-end real-time gas flow delta B31 and real-time rear-end real-time gas flow delta B32 of the third purification device in real time;
adjusting the starting state of each purification device through the processing module according to the relationship between the gas flow difference value between the gas inlet end and the gas outlet end of each purification device and each preset gas flow difference value;
when Δ A ≦ A1 and only the first purification apparatus is turned on:
if delta B11-delta B12 is less than or equal to z1, only the first purification device is continuously kept in an opening state;
if z1 is more than or equal to delta B11-delta B12 and less than or equal to z2, the first purification device is closed, and only the second purification device is opened;
if z2 is more than or equal to delta B11-delta B12 and less than or equal to z3, then the second purification device is started, and the first purification device and the second purification device are simultaneously in a starting state;
and if z3 is more than or equal to delta B11-delta B12 and less than or equal to z4, the second purification device and the third purification device are started at the moment, so that the first purification device, the second purification device and the third purification device are simultaneously in a starting state.
Specifically, when A1 < Δ A ≦ A2 and only the second purge device is turned on:
if delta B21-delta B22 is not less than z1, then the first purification device is started, and when delta B11-delta B12 is not less than z1, the second purification device is closed, only the first purification device is started, and when z1 is more than delta B11-delta B12 is not less than z2, the first purification device is closed, only the second purification device is started;
if z1 < Δ B21- Δ B22 ≦ z2, continuing to keep only the second purification device in the open state;
if z2 is more than or equal to delta B21-delta B22 and less than or equal to z3, the first purification device and the second purification device are started simultaneously;
and if z3 is more than or equal to delta B21-delta B22 and less than or equal to z4, the first purification device, the second purification device and the third purification device are simultaneously started.
Specifically, when A2 < Δ A ≦ A3 and only the first and second purge devices are turned on:
if delta B11-delta B12 is less than or equal to z1 or delta B21-delta B22 is less than or equal to z1, only the first purification device and the second purification device are continuously opened at the moment;
if z1 is less than delta B11-delta B12 and z1 is less than delta B21-delta B22 is less than or equal to z2, then the first purification device is closed, and the third purification device is opened, so that the second purification device and the third purification device are in an open state at the same time;
and if z2 is less than delta B21-delta B22, then the third purification device is started, and the first purification device, the second purification device and the third purification device are simultaneously in a starting state.
Specifically, a first preset inlet manifold gas flow rate L1, a second preset inlet manifold gas flow rate L2, a third preset inlet manifold gas flow rate L3, and a fourth preset inlet manifold gas flow rate L4 are set by the processing module, and L1 > L2 > L3 > L4;
after the first purification device, the second purification device and the third purification device are simultaneously started, setting the gas flow in the gas inlet pipeline according to the relation between the difference value between the front end real-time gas flow delta B31 and the rear end real-time gas flow delta B32 of the third purification device and each preset gas flow difference value in real time:
when delta B31-delta B32 is less than or equal to z1, selecting the first preset gas inlet pipeline gas flow L1 as the gas flow in the gas inlet pipeline;
when z1 is more than or equal to delta B31-delta B32 is less than or equal to z2, selecting the second preset gas inlet pipeline gas flow L2 as the gas flow in the gas inlet pipeline;
when z2 is more than or equal to delta B31-delta B32 is less than or equal to z3, selecting the third preset gas inlet pipeline gas flow L3 as the gas flow in the gas inlet pipeline;
when z3 is more than or equal to delta B31-delta B32 is less than or equal to z4, selecting the fourth preset gas inlet pipeline gas flow L4 as the gas flow in the gas inlet pipeline;
when the ith preset air inlet pipeline air flow rate Li is selected as the air flow rate in the air inlet pipeline, i is 1, 2, 3 and 4, and the opening degree of the electric control valve is adjusted through the control module, so that the air flow rate in the air inlet pipeline is the ith preset air inlet pipeline air flow rate Li.
Specifically, a first preset hydrogen sulfide concentration C1, a second preset hydrogen sulfide concentration C2, a third preset hydrogen sulfide concentration C3, and a fourth preset hydrogen sulfide concentration C4 are set by the processing module, and C1 < C2 < C3 < C4; the processing module is also used for setting a first preset correction coefficient y1, a second preset correction coefficient y2, a third preset correction coefficient y3 and a fourth preset correction coefficient y4, and the number of the preset correction coefficients is 1 & gt y1 & gt y2 & gt y3 & gt y4 & gt 0.8;
acquiring the real-time hydrogen sulfide concentration delta C in the gas inlet pipeline in real time through the processing module, and selecting a correction coefficient according to the relation between the real-time hydrogen sulfide concentration delta C and each preset hydrogen sulfide concentration so as to correct the gas flow Li of the ith preset gas inlet pipeline in the gas inlet pipeline:
when the delta C is less than or equal to C1, selecting the first preset correction coefficient y1 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y1 as the gas flow in the gas inlet pipeline;
when delta C is more than C1 and less than or equal to C2, selecting the second preset correction coefficient y2 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y2 as the gas flow in the gas inlet pipeline;
when delta C is more than C2 and less than or equal to C3, selecting the third preset correction coefficient y3 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y3 as the gas flow in the gas inlet pipeline;
and when the delta C is more than C3 and less than or equal to C4, selecting the fourth preset correction coefficient y4 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y4 as the gas flow in the gas inlet pipeline.
Specifically, a first preset ammonia gas concentration D1, a second preset ammonia gas concentration D2, a third preset ammonia gas concentration D3 and a fourth preset ammonia gas concentration D4 are set through the processing module, and D1 is more than D2 and more than D3 and more than D4; the processing module is further used for setting a first preset compensation coefficient x1, a second preset compensation coefficient x2, a third preset compensation coefficient x3 and a fourth preset compensation coefficient x4, and 1 > x1 > x2 > x3 > x4 > 0.8;
after the ith preset correction coefficient yi is selected to correct the ith preset gas inlet pipeline gas flow Li which is the gas flow in the gas inlet pipeline, i is 1, 2, 3 and 4, the real-time ammonia concentration delta D in the gas inlet pipeline is obtained in real time, and a compensation coefficient is selected according to the relation between the real-time ammonia concentration delta D and each preset ammonia concentration so as to compensate the corrected gas inlet pipeline gas flow Li in the gas inlet pipeline:
when the delta D is less than or equal to D1, selecting the first preset compensation coefficient x1, compensating the corrected gas flow Li x yi of the gas inlet pipeline in the gas inlet pipeline, and taking the compensated gas flow Li x y1 as the gas flow in the gas inlet pipeline;
when D1 is larger than and delta D is smaller than or equal to D2, selecting the second preset compensation coefficient x2, compensating the corrected gas flow rate Li x yi of the gas inlet pipeline in the gas inlet pipeline, and taking the compensated gas flow rate Li x2 as the gas flow rate in the gas inlet pipeline;
when D2 is larger than and delta D is smaller than or equal to D3, selecting the third preset compensation coefficient x3, compensating the corrected gas flow rate Li x yi of the gas inlet pipeline in the gas inlet pipeline, and taking the compensated gas flow rate Li x3 as the gas flow rate in the gas inlet pipeline;
and when D3 is larger than delta D and is not larger than D4, selecting the fourth preset compensation coefficient x4, compensating the corrected gas flow rate Li x yi of the gas inlet pipeline, and taking the compensated gas flow rate Li x4 as the gas flow rate in the gas inlet pipeline.
It can be seen that, above-mentioned embodiment not only greatly improves purifier's maintenance cycle through the monitoring and intelligent data processing and purifier's intelligent control to the gas flow information of exhaust gas purification deodorization in-process, can also improve exhaust gas purification deodorization's treatment effect effectively, and the environment has been protected effectively, has still greatly improved exhaust gas purification deodorization efficiency simultaneously, has saved time cost and construction cost.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.

Claims (10)

1. A purification and deodorization system for environmental protection waste gas treatment is characterized by comprising a purification unit and a control unit;
the air inlet end of the purification unit is communicated with the waste gas collection device through an air inlet pipeline, the air outlet end of the purification unit is communicated with the waste gas discharge device through an air outlet pipeline, and the purification unit is used for carrying out purification and deodorization on the waste gas collected by the waste gas collection device so as to discharge the waste gas through the waste gas discharge device; wherein the content of the first and second substances,
the purification unit comprises a first purification device, a second purification device and a third purification device, wherein the first purification device, the second purification device and the third purification device are arranged between the air inlet pipeline and the air outlet pipeline in a parallel connection mode, the air inlet end of the first purification device is provided with a first electromagnetic valve and a first front end gas flowmeter, the air outlet end of the first purification device is provided with a first rear end gas flowmeter, the air inlet end of the second purification device is provided with a second electromagnetic valve and a second front end gas flowmeter, the air outlet end of the second purification device is provided with a second rear end gas flowmeter, the air inlet end of the third purification device is provided with a third electromagnetic valve and a third front end gas flowmeter, and the air outlet end of the third purification device is provided with a third rear end gas flowmeter; a hydrogen sulfide concentration detector, an ammonia concentration detector and a total gas flowmeter are arranged on the gas inlet pipeline;
the control unit comprises an acquisition module, a processing module and a control module, wherein the acquisition module is respectively and electrically connected with the three front-end gas flowmeters, the three rear-end gas flowmeters, the hydrogen sulfide concentration detector, the ammonia concentration detector and the total gas flowmeter; the control module is used for being electrically connected with the three electromagnetic valves respectively so as to control the opening and closing of the three electromagnetic valves; the processing module is used for receiving the hydrogen sulfide concentration information, the ammonia concentration information and the gas flow information which are acquired by the acquisition module;
the processing module is further used for controlling the opening state of each purification device in real time according to the gas flow information in the gas inlet pipeline, and adjusting the opening state of each purification device in real time according to the difference value between the gas flow information of the gas inlet end and the gas flow information of the gas outlet end of the purification device in the opening state.
2. The purification and deodorization system for environmental protection, according to claim 1,
the processing module is further used for setting a first preset total gas flow A1, a second preset total gas flow A2, a third preset total gas flow A3 and a fourth preset total gas flow A4, wherein A1 is more than A2 and more than A3 is more than A4;
the processing module is further configured to obtain a real-time total gas flow Δ a in the gas inlet pipeline in real time, and control an opening state of each purification device according to a relationship between the real-time total gas flow Δ a and each preset total gas flow:
when the delta A is less than or equal to A1, only the first purification device is started;
when A1 is more than delta A and less than or equal to A2, only the second purification device is started;
when A2 is more than delta A and less than or equal to A3, only the first purification device and the second purification device are started;
when A3 is more than delta A and less than or equal to A4, the first purification device, the second purification device and the third purification device are started simultaneously.
3. The purification and deodorization system for environmental protection, according to claim 2,
the processing module is further configured to set a first preset gas flow difference z1, a second preset gas flow difference z2, a third preset gas flow difference z3, and a fourth preset gas flow difference z4, wherein z1 < z2 < z3 < z 4;
the processing module is further configured to obtain a front-end real-time gas flow Δ B11 and a rear-end real-time gas flow Δ B12 of the first purification apparatus in real time, obtain a front-end real-time gas flow Δ B21 and a rear-end real-time gas flow Δ B22 of the second purification apparatus in real time, and obtain a front-end real-time gas flow Δ B31 and a rear-end real-time gas flow Δ B32 of the third purification apparatus in real time;
the processing module is further used for adjusting the starting state of each purification device according to the relationship between the gas flow difference value between the gas inlet end and the gas outlet end of each purification device and each preset gas flow difference value;
when Δ A ≦ A1 and only the first purification apparatus is turned on:
if delta B11 delta B12 is less than or equal to z1, only the first purification device is continuously kept in an opening state;
if z1 is more than or equal to delta B11-delta B12 and less than or equal to z2, the first purification device is closed, and only the second purification device is opened;
if z2 is more than or equal to delta B11-delta B12 and less than or equal to z3, then the second purification device is started, and the first purification device and the second purification device are simultaneously in a starting state;
and if z3 is more than or equal to delta B11-delta B12 and less than or equal to z4, the second purification device and the third purification device are started at the moment, so that the first purification device, the second purification device and the third purification device are simultaneously in a starting state.
4. The purification and deodorization system for environmental protection, according to claim 3,
the processing module is also used for when A1 is more than delta A and less than A2 and only the second purification device is started:
if delta B21-delta B22 is not less than z1, then the first purification device is started, and when delta B11-delta B12 is not less than z1, the second purification device is closed, only the first purification device is started, and when z1 is more than delta B11-delta B12 is not less than z2, the first purification device is closed, only the second purification device is started;
if z1 < Δ B21- Δ B22 ≦ z2, continuing to keep only the second purification device in the open state;
if z2 is more than or equal to delta B21-delta B22 and less than or equal to z3, the first purification device and the second purification device are started simultaneously;
and if z3 is more than or equal to delta B21-delta B22 and less than or equal to z4, the first purification device, the second purification device and the third purification device are simultaneously started.
5. The system for purification and deodorization according to claim 4,
the processing module is also used for when A2 is more than delta A and less than A3, and only the first purification device and the second purification device are started:
if delta B11-delta B12 is less than or equal to z1 or delta B21-delta B22 is less than or equal to z1, only the first purification device and the second purification device are continuously opened at the moment;
if z1 is less than delta B11-delta B12 and z1 is less than delta B21-delta B22 is less than or equal to z2, then the first purification device is closed, and the third purification device is opened, so that the second purification device and the third purification device are in an open state at the same time;
and if z2 is less than delta B21-delta B22, then the third purification device is started, and the first purification device, the second purification device and the third purification device are simultaneously in a starting state.
6. The purification and deodorization system for environmental protection, according to claim 5,
the gas inlet pipeline is also provided with an electric regulating valve, the electric regulating valve is used for regulating the gas flow in the gas inlet pipeline, and the electric regulating valve is electrically connected with the control module;
the processing module is further used for setting a first preset gas inlet pipeline gas flow L1, a second preset gas inlet pipeline gas flow L2, a third preset gas inlet pipeline gas flow L3 and a fourth preset gas inlet pipeline gas flow L4, wherein L1 is more than L2, and L3 is more than L4;
the processing module is further configured to, after the first purification device, the second purification device and the third purification device are simultaneously turned on, set the gas flow rate in the gas inlet pipeline in real time according to a relationship between a difference between a front-end real-time gas flow rate Δ B31 and a rear-end real-time gas flow rate Δ B32 of the third purification device and each of the preset gas flow rate differences:
when delta B31-delta B32 is less than or equal to z1, selecting the first preset gas inlet pipeline gas flow L1 as the gas flow in the gas inlet pipeline;
when z1 is more than or equal to delta B31-delta B32 is less than or equal to z2, selecting the second preset gas inlet pipeline gas flow L2 as the gas flow in the gas inlet pipeline;
when z2 is more than or equal to delta B31-delta B32 is less than or equal to z3, selecting the third preset gas inlet pipeline gas flow L3 as the gas flow in the gas inlet pipeline;
when z3 is more than or equal to delta B31-delta B32 is less than or equal to z4, selecting the fourth preset gas inlet pipeline gas flow L4 as the gas flow in the gas inlet pipeline;
when the ith preset air inlet pipeline air flow rate Li is selected as the air flow rate in the air inlet pipeline, i is 1, 2, 3 and 4, and the opening degree of the electric control valve is adjusted through the control module, so that the air flow rate in the air inlet pipeline is the ith preset air inlet pipeline air flow rate Li.
7. The purification and deodorization system for environmental protection, according to claim 6,
the processing module is also used for setting a first preset hydrogen sulfide concentration C1, a second preset hydrogen sulfide concentration C2, a third preset hydrogen sulfide concentration C3 and a fourth preset hydrogen sulfide concentration C4, wherein C1 is more than C2 and more than C3 and more than C4; the processing module is also used for setting a first preset correction coefficient y1, a second preset correction coefficient y2, a third preset correction coefficient y3 and a fourth preset correction coefficient y4, and the number of the preset correction coefficients is 1 & gt y1 & gt y2 & gt y3 & gt y4 & gt 0.8;
the processing module is further configured to obtain a real-time hydrogen sulfide concentration Δ C in the intake duct in real time, and select a correction coefficient according to a relationship between the real-time hydrogen sulfide concentration Δ C and each of the preset hydrogen sulfide concentrations, so as to correct the ith preset intake duct gas flow Li in the intake duct:
when the delta C is less than or equal to C1, selecting the first preset correction coefficient y1 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y1 as the gas flow in the gas inlet pipeline;
when delta C is more than C1 and less than or equal to C2, selecting the second preset correction coefficient y2 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y2 as the gas flow in the gas inlet pipeline;
when delta C is more than C2 and less than or equal to C3, selecting the third preset correction coefficient y3 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y3 as the gas flow in the gas inlet pipeline;
and when the delta C is more than C3 and less than or equal to C4, selecting the fourth preset correction coefficient y4 to correct the gas flow Li of the ith preset gas inlet pipeline, and taking the corrected gas flow Li x y4 as the gas flow in the gas inlet pipeline.
8. The purification and deodorization system for environmental protection, according to claim 7,
the processing module is further used for setting a first preset ammonia gas concentration D1, a second preset ammonia gas concentration D2, a third preset ammonia gas concentration D3 and a fourth preset ammonia gas concentration D4, wherein D1 is more than D2 and more than D3 and more than D4; the processing module is further used for setting a first preset compensation coefficient x1, a second preset compensation coefficient x2, a third preset compensation coefficient x3 and a fourth preset compensation coefficient x4, and 1 > x1 > x2 > x3 > x4 > 0.8;
the processing module is further configured to, after the ith preset correction coefficient yi is selected to correct the ith preset intake duct gas flow Li which is the gas flow in the intake duct, obtain a real-time ammonia concentration Δ D in the intake duct in real time, and select a compensation coefficient according to a relationship between the real-time ammonia concentration Δ D and each of the preset ammonia concentrations, so as to compensate the corrected intake duct gas flow Li yi in the intake duct:
when the delta D is less than or equal to D1, selecting the first preset compensation coefficient x1, compensating the corrected gas flow Li x yi of the gas inlet pipeline in the gas inlet pipeline, and taking the compensated gas flow Li x y1 as the gas flow in the gas inlet pipeline;
when D1 is larger than and delta D is smaller than or equal to D2, selecting the second preset compensation coefficient x2, compensating the corrected gas flow rate Li x yi of the gas inlet pipeline in the gas inlet pipeline, and taking the compensated gas flow rate Li x2 as the gas flow rate in the gas inlet pipeline;
when D2 is larger than and delta D is smaller than or equal to D3, selecting the third preset compensation coefficient x3, compensating the corrected gas flow rate Li x yi of the gas inlet pipeline in the gas inlet pipeline, and taking the compensated gas flow rate Li x3 as the gas flow rate in the gas inlet pipeline;
and when D3 is larger than delta D and is not larger than D4, selecting the fourth preset compensation coefficient x4, compensating the corrected gas flow rate Li x yi of the gas inlet pipeline, and taking the compensated gas flow rate Li x4 as the gas flow rate in the gas inlet pipeline.
9. The system for purification and deodorization according to any one of claims 1 to 8, wherein the first purification device, the second purification device, and the third purification device are all biofilters.
10. A purification and deodorization method for environmental protection exhaust gas treatment, which is implemented by using the purification and deodorization system for environmental protection exhaust gas treatment according to any one of claims 1 to 9, comprising the steps of:
acquiring hydrogen sulfide concentration information, ammonia concentration information and gas flow information in a gas inlet pipeline;
acquiring gas flow information of a gas inlet end and a gas outlet end of a purifying device;
and controlling the opening state of each purification device according to the gas flow information in the gas inlet pipeline, and adjusting the opening state of each purification device in real time according to the difference value between the gas flow information of the gas inlet end and the gas flow information of the gas outlet end of the purification device in the opening state.
CN202111225245.0A 2021-10-21 2021-10-21 Purification and deodorization system and method for environment-friendly waste gas treatment Pending CN113797724A (en)

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