CN110220116B - Waste gas constant current processing system - Google Patents
Waste gas constant current processing system Download PDFInfo
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- CN110220116B CN110220116B CN201910483183.XA CN201910483183A CN110220116B CN 110220116 B CN110220116 B CN 110220116B CN 201910483183 A CN201910483183 A CN 201910483183A CN 110220116 B CN110220116 B CN 110220116B
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- waste gas
- storage tank
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/06—Control of flow characterised by the use of electric means
- G05D7/0617—Control of flow characterised by the use of electric means specially adapted for fluid materials
- G05D7/0629—Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a waste gas constant-current treatment system, which comprises a buffering gas storage tank, wherein the inlet of the buffering gas storage tank is connected with waste gas discharge equipment through a gas inlet pipe, and the outlet of the buffering gas storage tank is connected with waste gas purification equipment through a gas outlet pipe; a first vacuum gauge is arranged on a tank body of the buffer gas storage tank; a pipeline of the air outlet pipe is sequentially provided with a shut-off valve, a vacuum pump and a second vacuum gauge along the air outlet direction; a pipeline between the vacuum pump and the second vacuum gauge is also connected with nitrogen filling equipment; the constant-current processing system also comprises a DCS, the first vacuum gauge and the second vacuum gauge are connected with an input interface of the DCS, and an output interface of the DCS is connected with a vacuum pump and nitrogen filling equipment; the waste gas discharge equipment discharges waste gas to the buffering gas storage tank through the gas inlet pipe, and the DCS controls the operation of the vacuum pump according to the vacuum degree of the buffering gas storage tank so as to keep the flow rate of the waste gas constant; meanwhile, the DCS controls the operation of the nitrogen filling equipment according to the vacuum degree of the front end of the waste gas purification equipment fed back by the second vacuum gauge, so that the waste gas purification equipment maintains the inlet working pressure.
Description
Technical Field
The invention relates to the technical field of industrial waste gas treatment equipment, in particular to a waste gas constant-flow treatment system.
Background
The industrial waste gas refers to gas containing pollutants generated in fuel combustion or process in an enterprise factory, and generally needs to be purified by a waste gas treatment device before being discharged into the atmosphere.
The current industrial waste gas treatment methods comprise four methods:
firstly, an electric catching method: and (3) capturing harmful particles or tar in the gas by using high-voltage static electricity.
II, a washing method: the harmful components in the exhaust gas are absorbed or dissolved by water or other liquid.
Thirdly, an adsorption method: the separation is achieved by using a porous solid medium or chemical agent to accumulate or condense one or more components in the gas on the surface.
Fourthly, a filtering method: mainly through the sack, carry out dust collection treatment to the dust in the waste gas.
The four methods play an important role in gas purification during practical use. However, if the emission of industrial waste gas has peaks and valleys, and the peaks and valleys are very different, the design and processing of the equipment should use the data of the peaks as reference, which results in high cost of the equipment, and increased operation and maintenance cost in the later period, especially in some special industries, the peak emission of the industrial waste gas may be tens of times or even hundreds of times of the valley emission, which results in high cost of waste gas treatment.
Disclosure of Invention
The invention aims to provide an exhaust gas constant-flow treatment system which can weaken the wave crest and the wave trough of the exhaust gas emission, average exhaust gas flow, improve the treatment efficiency of the exhaust gas treatment system and reduce the treatment cost of the exhaust gas.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a waste gas constant-flow treatment system comprises a buffering gas storage tank, wherein an inlet of the buffering gas storage tank is connected with waste gas discharge equipment through a gas inlet pipe, and an outlet of the buffering gas storage tank is connected with waste gas purification equipment through a gas outlet pipe; a first vacuum gauge is arranged on a tank body of the buffer gas storage tank; a pipeline of the air outlet pipe is sequentially provided with a shut-off valve, a vacuum pump and a second vacuum gauge along the air outlet direction; a pipeline between the vacuum pump and the second vacuum gauge is also connected with nitrogen filling equipment;
the constant-current processing system also comprises a DCS (distributed control System), the first vacuum gauge and the second vacuum gauge are connected with an input interface of the DCS, and an output interface of the DCS is connected with a vacuum pump and nitrogen filling equipment;
the waste gas discharge equipment discharges waste gas to the buffering gas storage tank through the gas inlet pipe, the first vacuum gauge feeds the vacuum degree of the buffering gas storage tank back to the DCS, and the DCS controls the operation of the vacuum pump according to the vacuum degree of the buffering gas storage tank so as to keep the flow rate of the waste gas constant; meanwhile, the DCS controls the operation of the nitrogen filling equipment according to the vacuum degree of the front end of the waste gas purification equipment fed back by the second vacuum gauge, so that the waste gas purification equipment maintains the inlet working pressure.
The waste gas treatment device has the advantages that the discharged waste gas is cached through the buffer gas storage tank, when the vacuum degree of the buffer gas storage tank is too low, the vacuum pump is started, the waste gas is pumped to the waste gas purification equipment for treatment, when the vacuum degree of the buffer gas storage tank is too high, the vacuum pump is stopped, the buffer gas storage tank continues to cache the waste gas, so that the influence caused by wave crests and wave troughs in the process of exhaust is balanced, and the flow of the waste gas is kept constant; if the vacuum degree of the front end of the waste gas purification equipment is low, the DCS controls the nitrogen filling equipment to fill nitrogen into the air outlet pipe, and the phenomenon of negative pressure backflow of the waste gas purification equipment is avoided.
Drawings
The invention is further illustrated with reference to the following figures and examples:
FIG. 1 is a schematic block diagram of the system of the present invention.
Detailed Description
As shown in fig. 1, the present invention provides a waste gas constant-flow treatment system, which comprises a buffer gas storage tank 1, wherein an inlet of the buffer gas storage tank 1 is connected with a waste gas discharge device 3 through a gas inlet pipe 2, and an outlet of the buffer gas storage tank 1 is connected with a waste gas purification device 5 through a gas outlet pipe 4; the top of the buffer gas storage tank 1 is provided with a first vacuum gauge 7; a pipeline of the air outlet pipe 4 is sequentially provided with a shut-off valve 8, a vacuum pump 9 and a second vacuum gauge 10 along the air outlet direction; a nitrogen charging device 11 is also connected to the pipeline between the vacuum pump 9 and the second vacuum gauge 10.
The constant-current processing system further comprises DCS12, the first vacuum gauge 7 and the second vacuum gauge 10 are connected with an input interface of the DCS12, and an output interface of the DCS12 is connected with the vacuum pump 9 and the nitrogen filling device 11.
The waste gas discharge equipment 3 discharges waste gas to the buffer gas storage tank 1 through the gas inlet pipe 2, the buffer gas storage tank 1 buffers the waste gas, the first vacuum gauge 7 detects the vacuum degree in the buffer gas storage tank 1 in real time and feeds the vacuum degree of the buffer gas storage tank back to DCS12, and the DCS12 controls the operation of the vacuum pump 9 according to the vacuum degree of the buffer gas storage tank; specifically, when the vacuum degree of the buffer gas storage tank is lower than a set value, that is, too much waste gas is in the buffer gas storage tank, the vacuum pump 9 is started, and the vacuum pump 9 pumps the waste gas in the buffer gas storage tank 1 to the waste gas purification equipment 5 for purification treatment; when the vacuum degree of the buffer gas storage tank 1 is higher than a set value, namely the waste gas in the buffer gas storage tank is too little, stopping the vacuum pump 9, and continuing to buffer the waste gas by the buffer gas storage tank 1; the buffer gas storage tank 1 is combined with a vacuum pump 9 to balance the influence caused by wave crests and wave troughs during gas exhaust, so that the flow rate of the waste gas is kept constant.
Meanwhile, the DCS12 controls the operation of the nitrogen filling device 11 according to the vacuum degree of the front end of the exhaust gas purification device 5 fed back by the second vacuum gauge 10, that is, when the feedback value of the second vacuum gauge 10 is too low, the nitrogen filling device 11 is started, and nitrogen is introduced into the inlet of the exhaust gas purification device 5, so that the working pressure of the inlet of the exhaust gas purification device 5 is maintained, and the phenomenon of exhaust gas negative pressure backflow is avoided.
The exhaust gas purifying apparatus 5 of the present invention may employ a conventional exhaust gas purifying apparatus manufactured according to an electro-capturing method, a washing method, an adsorption method or a filtering method, and the present invention focuses on a constant flow rate treatment of exhaust gas, and the exhaust gas purifying apparatus 5 is not particularly limited.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; those skilled in the art can make numerous possible variations and modifications to the present teachings, or modify equivalent embodiments to equivalent variations, without departing from the scope of the present teachings, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention.
Claims (1)
1. A waste gas constant-flow treatment system is characterized by comprising a buffering gas storage tank, wherein an inlet of the buffering gas storage tank is connected with waste gas discharge equipment through a gas inlet pipe, and an outlet of the buffering gas storage tank is connected with waste gas purification equipment through a gas outlet pipe; a first vacuum gauge is arranged on a tank body of the buffer gas storage tank; a pipeline of the air outlet pipe is sequentially provided with a shut-off valve, a vacuum pump and a second vacuum gauge along the air outlet direction; a pipeline between the vacuum pump and the second vacuum gauge is also connected with nitrogen filling equipment;
the constant-current processing system also comprises a DCS (distributed control System), the first vacuum gauge and the second vacuum gauge are connected with an input interface of the DCS, and an output interface of the DCS is connected with a vacuum pump and nitrogen filling equipment;
the waste gas discharge equipment discharges waste gas to the buffering gas storage tank through the gas inlet pipe, the first vacuum gauge feeds the vacuum degree of the buffering gas storage tank back to the DCS, and the DCS controls the operation of the vacuum pump according to the vacuum degree of the buffering gas storage tank so as to keep the flow rate of the waste gas constant; meanwhile, the DCS controls the operation of the nitrogen filling equipment according to the vacuum degree of the front end of the waste gas purification equipment fed back by the second vacuum gauge, so that the waste gas purification equipment maintains the inlet working pressure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910483183.XA CN110220116B (en) | 2019-06-04 | 2019-06-04 | Waste gas constant current processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910483183.XA CN110220116B (en) | 2019-06-04 | 2019-06-04 | Waste gas constant current processing system |
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| Publication Number | Publication Date |
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| CN110220116A CN110220116A (en) | 2019-09-10 |
| CN110220116B true CN110220116B (en) | 2021-04-06 |
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| CN201910483183.XA Active CN110220116B (en) | 2019-06-04 | 2019-06-04 | Waste gas constant current processing system |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101486918A (en) * | 2009-02-17 | 2009-07-22 | 北京海润川投资咨询有限公司 | Novel spouted circulating fluid bed timber rapid pyrolysis apparatus and technological process |
| US9046895B2 (en) * | 2009-12-30 | 2015-06-02 | Caterpillar Inc. | System and method for controlling fluid delivery |
| CN101891191B (en) * | 2010-02-03 | 2012-07-25 | 通辽市鼎鑫蜂窝活性炭有限公司 | Waterproof soil matrix formed honeycomb activated carbon and production process thereof |
| CN203191151U (en) * | 2012-12-21 | 2013-09-11 | 黄鸣 | Vacuum gauge automatic calibrating device |
| CN104635776A (en) * | 2013-11-13 | 2015-05-20 | 中国科学院沈阳科学仪器股份有限公司 | Wide-range pressure control system and method applied to vacuum equipment |
| CN104638557B (en) * | 2015-03-06 | 2017-03-22 | 西安北鱼智能科技有限公司 | Gas purification method |
| CN105004801B (en) * | 2015-06-17 | 2017-04-12 | 北京空间机电研究所 | Loop heat pipe ammonia working medium purity analysis device |
| CN107670078A (en) * | 2017-09-21 | 2018-02-09 | 武健 | Vacuum system and oxirane system and device |
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