CN201578966U - Tail gas treatment system of alkali recovery boiler - Google Patents
Tail gas treatment system of alkali recovery boiler Download PDFInfo
- Publication number
- CN201578966U CN201578966U CN2009202687126U CN200920268712U CN201578966U CN 201578966 U CN201578966 U CN 201578966U CN 2009202687126 U CN2009202687126 U CN 2009202687126U CN 200920268712 U CN200920268712 U CN 200920268712U CN 201578966 U CN201578966 U CN 201578966U
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- tail gas
- recovery boiler
- treatment system
- alkali recovery
- dust
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Abstract
The utility model discloses a tail gas treatment system of an alkali recovery boiler, which relates to the tail gas treatment technology of the paper manufacturing industry and is designed for resolving problems that tail gas discharge of the alkali recovery boiler in the prior art pollutes environments. The tail gas treatment system comprises a dust removing device, a leaching tower, an induced draft fan and a steam heater, wherein the dust removing device is used for performing dust removing treatment for tail gas of a dissolving tank to form low-dust tail gas, the leaching tower is connected with the dust removing device and used for performing sulphide removing treatment for the tail gas after dust removing treatment to form pure tail gas, the induced draft fan is connected with the leaching tower and used for leading the tail gas after sulphide removing treatment to the steam heater, the steam heater is connected with the induced draft fan and used for heating the tail gas after sulphide removing treatment to form high temperature tail gas, the heated tail gas is sent into the boiler to burn, and gas after being burnt is discharged to the atmosphere. The tail gas treatment system of the alkali recovery boiler is adaptable to tail gas treatment in the paper manufacturing industry.
Description
Technical field
The utility model relates to paper industry vent gas treatment technology, relates in particular to a kind of alkali recovery boiler exhaust treatment system.
Background technology
At present; in paper industry; alkali recovery process plays a part the protection environment, reclaims resource; it is important component part indispensable in the paper technology; it is by operations such as evaporation, burning, causticization, recovery; reclaim the alkali resource in the black liquid on the one hand, on the other hand the organic matter in the black liquid is converted into the energy, avoid the pollution of discharge of wastewater environment.
In alkali recovery process, concentrated black liquid is after alkali recovery boiler internal combustion, the fused mass that produces flows into the green liquor dissolving tank through chute, can produce a large amount of gas (being tail gas) in the green liquor dissolving tank, contains reproducibility sulfuration thing (TRS), the sulfur dioxide (SO of frowziness in these tail gas
2), and carry dust secretly.At present, be tail gas directly to be sent into the alkali recovery boiler burn for the processing mode of dissolving tank tail gas, the gas after the burning enters in the atmosphere.Yet in above-mentioned tail gas treatment process, the dust that dissolving tank tail gas is carried secretly does not directly enter atmosphere through handling, and causes environmental pollution.
The utility model content
The purpose of this utility model provides a kind of alkali recovery boiler exhaust treatment system, and the tail gas after the utility model system handles enters atmosphere, does not pollute the environment.
For achieving the above object, the utility model adopts following technical scheme:
A kind of alkali recovery boiler exhaust treatment system comprises:
Dust arrester is used for dissolving tank tail gas is carried out dust removal process, forms low dust tail gas;
Eluting column links to each other with described dust arrester, is used for that the tail gas after the dust removal process is removed sulfide and handles, and forms pure tail gas;
Air-introduced machine links to each other with described eluting column, is used for causing steam heater except that the tail gas behind the sulfide;
Steam heater links to each other with described air-introduced machine, is used for the described tail gas that removes behind the sulfide is carried out heat treated, forms high-temperature tail gas, and the tail gas after will heating sends in the boiler and burn, and the gas after the burning enters atmosphere.
The alkali recovery boiler exhaust treatment system that the utility model provides at first, is provided with dust arrester, and dissolving tank tail gas is carried out dust removal process, forms low dust tail gas, has significantly reduced the grit of being carried secretly in the tail gas; Secondly, be provided with eluting column, removed the sulfide in the tail gas; Through after heating and the burning, the tail gas of acquisition meets the relevant environmental protection standard of country, directly enters atmosphere, does not pollute the environment again.
Description of drawings
Fig. 1 is the structural representation of the utility model alkali recovery boiler exhaust treatment system embodiment;
Fig. 2 is the structural representation of the dust arrester in the alkali recovery boiler exhaust treatment system shown in Figure 1.
The specific embodiment
For solving alkali recovery boiler pollution emission problem of environment in the prior art, the utility model provides a kind of alkali recovery boiler exhaust treatment system.Below in conjunction with accompanying drawing the utility model is described in detail.
As shown in Figure 1, the utility model also provides a kind of alkali recovery boiler exhaust treatment system, and it comprises:
Dust arrester 1 is used for dissolving tank tail gas is carried out dust removal process, forms low dust tail gas;
Eluting column 2 links to each other with dust arrester 1, is used for that the tail gas after the dust removal process is removed sulfide and handles, and forms pure tail gas;
Air-introduced machine 3 links to each other with eluting column 2, is used for causing steam heater 4 except that the tail gas behind the sulfide;
Alkali recovery boiler exhaust treatment system of the present utility model at first, is provided with dust arrester 1, and dissolving tank tail gas is carried out dust removal process, forms low dust tail gas, has significantly reduced the grit of being carried secretly in the tail gas; Secondly, be provided with eluting column 2, removed the sulfide in the tail gas; Through after steam heater 4 heating, tail gas is sent into burning in the alkali recovery boiler 5 again, the tail gas of acquisition meets the relevant environmental protection standard of country, directly enters atmosphere, does not pollute the environment.
In order to improve efficiency of dust collection, dust arrester 1 is preferably Venturi scrubber, and as shown in Figure 2, this Venturi scrubber comprises Venturi tube 7 and cyclonic separation tank 8, and Venturi tube 7 and cyclonic separation tank 8 adopt stainless steel, wherein,
Venturi tube 7 comprises collapsible tube 71, trunnion 72 and the anemostat 73 that is connected successively, one end of collapsible tube 71 is provided with air inlet 74, the sidewall of collapsible tube 71 or trunnion 72 is provided with water inlet 75 (in the embodiment shown in Figure 2, water inlet 75 has been arranged on the collapsible tube 71), the sidewall of anemostat 73 is provided with first gas outlet 76;
The sidewall of cyclonic separation tank 8 is provided with air inlet 81, air inlet 81 links to each other with first gas outlet 76 of anemostat 73, the upper end of cyclonic separation tank 8 is provided with 82, the second gas outlets 82, second gas outlet and links to each other with eluting column 2, and the bottom of cyclonic separation tank 8 is provided with delivery port 83.
When Venturi scrubber was used, the tail gas that contains dust at first entered collapsible tube 71 by air inlet 74, and the flow velocity of tail gas increases gradually along pipe; After water is sprayed into by water inlet 75, clashed into by high velocity air and atomize, the dust granules in the gas contacts with drop and is lubricated; After tail gas entered anemostat 73, flow velocity reduced gradually, and grit is bonded to each other, particle is increased gradually and easily removes; Last tail gas enters cyclonic separation tank 8, because centrifugal action, water is thrown to the inwall of cyclonic separation tank 8 with lubricated dust granules and is flowed out outside the device from delivery port 83 downwards, gas after clean is then discharged by second gas outlet 82 of cyclonic separation tank 8, delivers to tail gas eluting column 2 again and handles.
When initial, the about 90-100 of dissolving tank exhaust temperature ℃, the about 2000-5000mg/Nm of dust content
3After adopting exhaust treatment system of the present utility model, tail gas earlier carries out dust removal process through Venturi scrubber, after the dust removal process in the tail gas dust content be reduced to 100-200mg/Nm
3, the about 80-90 of temperature ℃, tail gas enters eluting column and carries out carrying out washing treatment then, and exhaust temperature is reduced to about 50 ℃ after eluting column is handled, and dust content is at 100mg/Nm
3In.Therefore, adopt exhaust treatment system of the present utility model can realize cleaner production, play an important role in the protection of the environment.
In Fig. 2, collapsible tube 71, trunnion 72 and anemostat 73 preferably set gradually in vertical direction, and like this, tail gas can atomize more fully, thereby reach dust removing effects preferably.In addition, the rotating shaft of cyclonic separation tank 8 preferably is provided with in vertical direction, like this, water droplet is separated from tail gas with dust granules and discharges.
In the utility model, dust arrester 1 is except can adopting above-mentioned Venturi scrubber, and it can also be for the dust arrester of technology such as employing electrostatic precipitation, because these dust arresters are common practise of the prior art, so locate to give unnecessary details no longer one by one.
The above; it only is the specific embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (4)
1. an alkali recovery boiler exhaust treatment system is characterized in that, comprising:
Dust arrester is used for dissolving tank tail gas is carried out dust removal process, forms low dust tail gas;
Eluting column links to each other with described dust arrester, is used for that the tail gas after the dust removal process is removed sulfide and handles, and forms pure tail gas;
Air-introduced machine links to each other with described eluting column, is used for causing steam heater except that the tail gas behind the sulfide;
Steam heater links to each other with described air-introduced machine, is used for the described tail gas that removes behind the sulfide is carried out heat treated, forms high-temperature tail gas, and the tail gas after will heating sends in the boiler and burn, and the gas after the burning enters atmosphere.
2. alkali recovery boiler exhaust treatment system according to claim 1 is characterized in that described dust arrester is a Venturi scrubber, and described Venturi scrubber comprises Venturi tube and cyclonic separation tank, wherein,
Described Venturi tube comprises collapsible tube, trunnion and the anemostat that is connected successively, and an end of described collapsible tube is provided with air inlet; The sidewall of described collapsible tube or trunnion is provided with water inlet, and the sidewall of described anemostat is provided with first gas outlet;
The sidewall of described cyclonic separation tank is provided with air inlet, described air inlet links to each other with first gas outlet of described anemostat, the upper end of described cyclonic separation tank is provided with second gas outlet, described second gas outlet links to each other with described eluting column, and the bottom of described cyclonic separation tank is provided with delivery port.
3. alkali recovery boiler exhaust treatment system according to claim 2 is characterized in that described collapsible tube, trunnion and anemostat set gradually in vertical direction.
4. alkali recovery boiler exhaust treatment system according to claim 3 is characterized in that the rotating shaft setting of described cyclonic separation tank in vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202687126U CN201578966U (en) | 2009-10-29 | 2009-10-29 | Tail gas treatment system of alkali recovery boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202687126U CN201578966U (en) | 2009-10-29 | 2009-10-29 | Tail gas treatment system of alkali recovery boiler |
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| Publication Number | Publication Date |
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| CN201578966U true CN201578966U (en) | 2010-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009202687126U Expired - Lifetime CN201578966U (en) | 2009-10-29 | 2009-10-29 | Tail gas treatment system of alkali recovery boiler |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181063A (en) * | 2011-04-14 | 2011-09-14 | 泰格林纸集团股份有限公司 | Process for acidizing and recycling lignin by using pulping black liquid |
| CN102517952A (en) * | 2011-11-29 | 2012-06-27 | 潍坊恒联浆纸有限公司 | Treatment method of digesting waste steam produced by soda pulping process |
| CN105107361A (en) * | 2015-09-10 | 2015-12-02 | 武汉凯比思电力设备有限公司 | Treatment device for pulping stink of paper mill |
| CN108452634A (en) * | 2018-06-14 | 2018-08-28 | 王书虎 | A kind for the treatment of process and equipment of organic exhaust gas |
| CN111001272A (en) * | 2019-12-09 | 2020-04-14 | 浙江天洁环境科技股份有限公司 | System and method for treating tail gas of papermaking alkaline black liquor |
-
2009
- 2009-10-29 CN CN2009202687126U patent/CN201578966U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102181063A (en) * | 2011-04-14 | 2011-09-14 | 泰格林纸集团股份有限公司 | Process for acidizing and recycling lignin by using pulping black liquid |
| CN102181063B (en) * | 2011-04-14 | 2013-07-31 | 泰格林纸集团股份有限公司 | Process for acidizing and recycling lignin by using pulping black liquid |
| CN102517952A (en) * | 2011-11-29 | 2012-06-27 | 潍坊恒联浆纸有限公司 | Treatment method of digesting waste steam produced by soda pulping process |
| CN102517952B (en) * | 2011-11-29 | 2014-03-26 | 潍坊恒联浆纸有限公司 | Treatment method of digesting waste steam produced by soda pulping process |
| CN105107361A (en) * | 2015-09-10 | 2015-12-02 | 武汉凯比思电力设备有限公司 | Treatment device for pulping stink of paper mill |
| CN108452634A (en) * | 2018-06-14 | 2018-08-28 | 王书虎 | A kind for the treatment of process and equipment of organic exhaust gas |
| CN108452634B (en) * | 2018-06-14 | 2024-04-02 | 济南众焦先科环保科技有限公司 | Organic waste gas treatment process and equipment |
| CN111001272A (en) * | 2019-12-09 | 2020-04-14 | 浙江天洁环境科技股份有限公司 | System and method for treating tail gas of papermaking alkaline black liquor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUHAN KAIBISI ELECTRIC POWER EQUIPMENT CO., LTD. Free format text: FORMER OWNER: WUHAN KAIBINSI ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Effective date: 20110331 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Cao Chunhua Inventor after: Zhou Kai Inventor before: Cao Chunhua Inventor before: Zhou Kai Inventor before: Liu Pengbin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CAO CHUNHUA ZHOU KAI LIU PENGBIN TO: CAO CHUNHUA ZHOU KAI Free format text: CORRECT: ADDRESS; FROM: 430070 KAILE GARDEN, WULUO ROAD, WUCHANG DISTRICT, WUHAN CITY, HUBEI PROVINCE TO: 430074 402, TOWER A, WENCHANG BUILDING, INTERNATIONAL ENTERPRISE CENTER, SPECIAL NO. 1, GUANGGU AVENUE, EAST LAKE HIGH-TECH. DEVELOPMENT AREA, WUHAN CITY, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110331 Address after: 402 A building, Wenchang international building, 1 Optics Valley Avenue, East Lake hi tech Development Zone, Wuhan, Hubei 430074, China Co-patentee after: Cao Chunhua Patentee after: Wuhan Kaibisi Electric Power Equipment Co., Ltd. Co-patentee after: Zhou Kai Address before: 430070 Hubei Province, Wuhan city Wuchang District Wuluo road Keller Garden Co-patentee before: Cao Chunhua Patentee before: Wuhan Kaibinsi Environmental Protection Science & Technology Co., Ltd. Co-patentee before: Zhou Kai |
|
| CX01 | Expiry of patent term |
Granted publication date: 20100915 |
|
| CX01 | Expiry of patent term |