CN112452133A - Waste gas treatment process - Google Patents
Waste gas treatment process Download PDFInfo
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- CN112452133A CN112452133A CN202011345889.9A CN202011345889A CN112452133A CN 112452133 A CN112452133 A CN 112452133A CN 202011345889 A CN202011345889 A CN 202011345889A CN 112452133 A CN112452133 A CN 112452133A
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
- B01D53/04—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 by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention aims to provide an exhaust gas treatment process, which comprises the following steps: 1) collecting waste gas; 2) introducing the collected waste gas into an incineration tower for incineration; 3) introducing the incinerated waste gas into a spray tower for spraying; 4) introducing the sprayed waste gas into an adsorption tower for adsorption; 5) the method comprises the steps of introducing the treated waste gas into a reaction tank, collecting the waste gas, incinerating the waste gas, converting substances in the waste gas into oxides as much as possible, spraying the incinerated waste gas, converting the substances in the waste gas into sodium salts as much as possible, adsorbing the sprayed waste gas by an adsorption tower, and recycling the waste gas treated by the steps, namely directly introducing the treated waste gas into the reaction tank.
Description
Technical Field
The invention relates to the field of waste gas treatment, in particular to a waste gas treatment process.
Background
Along with the development of society, the public demand for environmental protection is higher and higher, in the fiber production process, because production processes are more, the production cycle is long, and a large amount of chemical raw materials are used from the yellowing process to the spinning process, industrial waste gas is produced, and the main component of the industrial waste gas is CS2And H2S。
The methods for treating the exhaust gas in the production of fibers are generally as follows: 1. alkali washing and spraying: spraying and absorbing the waste gas by alkali liquor to generate Na2S, remanufacturing an outer wafer pin; 2. activated carbon adsorption: treating the tail gas by carbon adsorption industry to treat CS2(ii) a 3. Condensation: passing the exhaust gas through a heat exchanger (condenser) with low temperature water to directly or indirectly reduce the exhaust gas problem to CS2Boiling point lower than (46.5 ℃), recovering liquid CS2. Method 1 to H2S treatment is significant, but for CS2Essentially no effect, method 2 on CS2The treatment effect of (2) is obvious, but the existing methods of carbon adsorption basically have the problems of troublesome operation, low utilization rate, high cost and the like, while the condensation method in the method 3 is used for treating CS2The treatment effect of (2) is not obvious in the carbon adsorption effect.
The inventor finds that when the fiber is produced, waste gas generated in the fiber production process can be well treated by combining alkaline washing spray with activated carbon adsorption, but the conventional method finally discharges the treated waste gas into air, and the treated waste gas is diluted by the air, but the waste gas discharged at most is still in the air.
Disclosure of Invention
In view of the problems in the prior art, the present invention aims to solve one of the above-mentioned problems,
in a first aspect, the present invention provides an exhaust gas treatment process, the process comprising: 1) collecting waste gas; 2) introducing the collected waste gas into an incineration tower for incineration; 3) introducing the incinerated waste gas into a spray tower for spraying; 4) introducing the sprayed waste gas into an adsorption tower for adsorption; 5) and introducing the treated waste gas into a reaction tank.
Preferably, the introduced waste gas in the step 2) is incinerated for 5min in an environment with the temperature higher than 800 ℃.
Preferably, the spraying liquid used for spraying in step 3) comprises: alkali liquor and alkali cellulose.
Preferably, the solid-liquid ratio of the alkali liquor to the alkali cellulose is 1: 50 g/L.
Preferably, before the sprayed waste gas is introduced into the adsorption tower, the sprayed waste gas is introduced into a condensation pipe, condensate is recovered, and the condensed waste gas is introduced into the adsorption tower for adsorption.
Preferably, the adsorption tower uses an activated carbon filter screen for adsorption.
Preferably, the off-gas is passed into the flotation chamber before being passed into the reaction cell, and then the off-gas passed into the flotation chamber is passed into the reaction cell.
Preferably, the waste gas is the waste gas discharged from an acid waste water well.
Has the advantages that: the waste gas treatment method of the invention mainly aims at waste gas generated in fiber production, firstly collecting the waste gas, then firstly burning the waste gas, converting substances in the waste gas into oxides as much as possible, then spraying the burned waste gas, converting the substances in the waste gas into sodium salts as much as possible, and then adsorbing the sprayed waste gas by an adsorption tower, wherein the waste gas treated by the steps can be recycled, namely the treated waste gas is directly introduced into a reaction tank.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a flow diagram of an exhaust treatment process according to an embodiment of the present invention;
fig. 2 is a flow chart of another exhaust treatment process according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to FIG. 1, a flow diagram of an exhaust treatment process of the present application is shown, which is suitable for post-fiber exhaust treatment.
Step 101: collecting waste gas;
step 102: introducing the collected waste gas into an incineration tower for incineration;
step 103: introducing the incinerated waste gas into a spray tower for spraying;
step 104: introducing the sprayed waste gas into an adsorption tower for adsorption;
step 105: and introducing the treated waste gas into a reaction tank.
In the flow, firstly, collecting waste gas in step 101, then introducing the waste gas into an incineration tower to incinerate the waste gas in step 102, converting substances in the waste gas into oxides as much as possible to facilitate subsequent treatment, then spraying the waste gas in step 103, wherein the purpose of the step is to convert substances such as sulfide into sodium sulfide to facilitate subsequent treatment, and then introducing the waste gas into an adsorption tower to be adsorbed in step 104, so that pollutants are basically adsorbed in the adsorption tower; the treated effluent gas may be reused in step 105 and introduced into the reaction cell.
Referring to fig. 2, there is shown a flow diagram of another exhaust treatment process of the present application, suitable for post-fiber treatment of exhaust gases, further defining the flow diagram shown in fig. 1,
step 201: collecting waste gas of the acidic wastewater well;
step 202: introducing the collected waste gas into an incineration tower for incineration, wherein the incineration temperature is not less than 800 ℃ and the time is 5 min;
step 203: introducing the waste gas after incineration into a spray tower for spraying, wherein the spray liquid is alkali liquor and alkali cellulose, and the solid-liquid ratio of the alkali liquor to the alkali cellulose is 1: 50 g/L;
step 204: introducing the sprayed waste gas into a condensing pipe, and recovering condensate;
step 205: introducing the condensed waste gas into an adsorption tower, and adsorbing by using an active carbon adsorption net in the adsorption tower;
step 206: introducing the adsorbed waste gas into an air flotation chamber;
step 207: and introducing the treated waste gas into a reaction tank.
In the process, acid wastewater well waste gas is collected in step 201, mainly waste gas generated in fiber production, then the waste gas is incinerated for 5min at the temperature of not less than 800 ℃ in step 202, pollutants are converted into oxides as far as possible, the incinerated waste gas is introduced into a spray tower for spraying in step 203, spray liquid is alkali liquor and alkali cellulose, and the solid-to-liquid ratio of the alkali liquor to the alkali cellulose is 1: 50 g/L; the solid-liquid ratio of the alkali liquor to the alkali cellulose is 1: 50g/L of spray liquid enables Na to be generated2S, then in step 204, the sprayed waste gas passes through a condensing pipe, and the liquid CS is recovered2Then, in step 206, the exhaust gas after the condensation is introduced into the air flotation chamber for further treatment, so that the waste gas is more suitable for the reaction tank, and is the most suitable for the reaction tankAnd introducing the treated waste gas into a reaction tank.
In the case of the example 1, the following examples are given,
an exhaust gas treatment process comprising:
1) collecting waste gas;
2) introducing the collected waste gas into an incineration tower for incineration;
3) introducing the incinerated waste gas into a spray tower for spraying;
4) introducing the sprayed waste gas into an adsorption tower for adsorption;
5) and introducing the treated waste gas into a reaction tank.
In the step 3), the incineration temperature is 800-900 ℃, the waste gas retention time is 5min, and the spraying agent used for spraying in the step 3) is NaOH.
Example 2
An exhaust gas treatment process comprising:
1) collecting waste gas;
2) introducing the collected waste gas into an incineration tower for incineration;
3) introducing the incinerated waste gas into a spray tower for spraying;
4) introducing the sprayed waste gas into an adsorption tower for adsorption;
5) introducing the sprayed waste gas into an air flotation chamber;
6) and introducing the treated waste gas into a reaction tank.
In the step 3), the incineration temperature is 800-900 ℃, the waste gas retention time is 5min, and the spraying agent used for spraying in the step 3) is NaOH.
Example 3
An exhaust gas treatment process comprising:
1) collecting waste gas;
2) introducing the collected waste gas into an incineration tower for incineration;
3) introducing the incinerated waste gas into a spray tower for spraying;
4) introducing the sprayed waste gas into a condensing pipe, and recovering condensate;
4) introducing the sprayed waste gas into an adsorption tower for adsorption;
6) introducing the sprayed waste gas into an air flotation chamber;
7) and introducing the treated waste gas into a reaction tank.
In the step 3), the incineration temperature is 800-900 ℃, the waste gas retention time is 5min, and the spraying agent used for spraying in the step 3) is NaOH.
Example 4
An exhaust gas treatment process comprising:
1) collecting waste gas;
2) introducing the collected waste gas into an incineration tower for incineration;
3) introducing the incinerated waste gas into a spray tower for spraying;
4) introducing the sprayed waste gas into a condensing pipe, and recovering condensate;
4) introducing the sprayed waste gas into an adsorption tower for adsorption;
6) introducing the sprayed waste gas into an air flotation chamber;
7) and introducing the treated waste gas into a reaction tank.
The incineration temperature in the step 3) is 700-750 ℃, the residence time of the waste gas is 10min, the spraying agent used for spraying in the step 3) is a mixture of NaOH solution and sodium cellulose, the NaOH solution is concentrated NaOH solution, and the solid-to-liquid ratio of alkali liquor to alkali cellulose is 1: 50 g/L.
Example 5
An exhaust gas treatment process comprising:
1) collecting waste gas;
2) introducing the collected waste gas into an incineration tower for incineration;
3) introducing the incinerated waste gas into a spray tower for spraying;
4) introducing the sprayed waste gas into a condensing pipe, and recovering condensate;
4) introducing the sprayed waste gas into an adsorption tower for adsorption;
6) introducing the sprayed waste gas into an air flotation chamber;
7) and introducing the treated waste gas into a reaction tank.
In the step 3), the incineration temperature is 800-: 50 g/L.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. An exhaust gas treatment process, characterized in that the process comprises:
1) collecting waste gas;
2) introducing the collected waste gas into an incineration tower for incineration;
3) introducing the incinerated waste gas into a spray tower for spraying;
4) introducing the sprayed waste gas into an adsorption tower for adsorption;
5) and introducing the treated waste gas into a reaction tank.
2. The process of claim 1, further defined as step 2), wherein the introduced waste gas is incinerated in an environment of greater than 800 ℃ for 5 minutes in step 2).
3. The process as set forth in claim 1 and further defined in step 3), wherein the spray used in spraying in step 3) comprises: alkali liquor and alkali cellulose.
4. The process as claimed in claim 3, wherein the solid-to-liquid ratio of the alkali liquor to the alkali cellulose is 1: 50 g/L.
5. The process of claim 1, further defined as step 4), wherein the sprayed flue gas is passed to a condenser tube to recover a condensate and the condensed flue gas is passed to an adsorption column for adsorption prior to being passed to the adsorption column.
6. The process of claim 1, further defined as step 4), wherein the adsorption column uses a filter of activated carbon for adsorption.
7. The process of claim 1, further defined as step 5), wherein the off-gas is passed into the flotation chamber before being passed into the reaction cell, and the off-gas passed into the flotation chamber is then passed into the reaction cell.
8. The process as set forth in claim 1 further defined in step 1), wherein said waste gas is waste gas from an acid wastewater well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011345889.9A CN112452133A (en) | 2020-11-25 | 2020-11-25 | Waste gas treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011345889.9A CN112452133A (en) | 2020-11-25 | 2020-11-25 | Waste gas treatment process |
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| Publication Number | Publication Date |
|---|---|
| CN112452133A true CN112452133A (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011345889.9A Pending CN112452133A (en) | 2020-11-25 | 2020-11-25 | Waste gas treatment process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114405226A (en) * | 2022-01-17 | 2022-04-29 | 江西益高化工实业发展有限公司 | Waste gas treatment process and device for sodium silicate continuous production |
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| JPH0796134A (en) * | 1993-09-30 | 1995-04-11 | Ngk Insulators Ltd | Device for treating waste combustion gas and treating method therefor |
| CN204438145U (en) * | 2014-05-30 | 2015-07-01 | 南京生能炉业有限公司 | Burned waste gas device |
| CN206229190U (en) * | 2016-11-30 | 2017-06-09 | 成都丽雅纤维股份有限公司 | A kind of process system for being enriched with carbon disulfide and hydrogen sulfide in viscose rayon waste gas |
| CN108128953A (en) * | 2017-12-26 | 2018-06-08 | 合肥恒力装备有限公司 | The exhaust gas and wastewater treatment equipment and method of a kind of waste lithium cell recycling cracking |
| CN207641231U (en) * | 2017-11-23 | 2018-07-24 | 杭州安烨户外休闲用品有限公司 | Lacquer spraying waste gas processing unit |
| CN109647161A (en) * | 2018-12-07 | 2019-04-19 | 株洲鼎端装备股份有限公司 | The processing system and processing method of flue gas after a kind of useless lithium battery particle charing |
| CN210832040U (en) * | 2019-11-20 | 2020-06-23 | 山东沃华远达环境科技股份有限公司 | Integrated organic waste gas treatment equipment |
| CN211069631U (en) * | 2019-10-09 | 2020-07-24 | 广东红球建材科技有限公司 | Polycarboxylate water reducing agent exhaust treatment device |
-
2020
- 2020-11-25 CN CN202011345889.9A patent/CN112452133A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0796134A (en) * | 1993-09-30 | 1995-04-11 | Ngk Insulators Ltd | Device for treating waste combustion gas and treating method therefor |
| CN204438145U (en) * | 2014-05-30 | 2015-07-01 | 南京生能炉业有限公司 | Burned waste gas device |
| CN206229190U (en) * | 2016-11-30 | 2017-06-09 | 成都丽雅纤维股份有限公司 | A kind of process system for being enriched with carbon disulfide and hydrogen sulfide in viscose rayon waste gas |
| CN207641231U (en) * | 2017-11-23 | 2018-07-24 | 杭州安烨户外休闲用品有限公司 | Lacquer spraying waste gas processing unit |
| CN108128953A (en) * | 2017-12-26 | 2018-06-08 | 合肥恒力装备有限公司 | The exhaust gas and wastewater treatment equipment and method of a kind of waste lithium cell recycling cracking |
| CN109647161A (en) * | 2018-12-07 | 2019-04-19 | 株洲鼎端装备股份有限公司 | The processing system and processing method of flue gas after a kind of useless lithium battery particle charing |
| CN211069631U (en) * | 2019-10-09 | 2020-07-24 | 广东红球建材科技有限公司 | Polycarboxylate water reducing agent exhaust treatment device |
| CN210832040U (en) * | 2019-11-20 | 2020-06-23 | 山东沃华远达环境科技股份有限公司 | Integrated organic waste gas treatment equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114405226A (en) * | 2022-01-17 | 2022-04-29 | 江西益高化工实业发展有限公司 | Waste gas treatment process and device for sodium silicate continuous production |
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Application publication date: 20210309 |