CN201361514Y - Recovery equipment of gas-phase white carbon black processing tail gas - Google Patents
Recovery equipment of gas-phase white carbon black processing tail gas Download PDFInfo
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- CN201361514Y CN201361514Y CNU2009201145962U CN200920114596U CN201361514Y CN 201361514 Y CN201361514 Y CN 201361514Y CN U2009201145962 U CNU2009201145962 U CN U2009201145962U CN 200920114596 U CN200920114596 U CN 200920114596U CN 201361514 Y CN201361514 Y CN 201361514Y
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Abstract
The utility model relates to a tail gas processing equipment in the field of chemical technology, in particular to a recovery equipment of gas-phase white carbon black processing tail gas. The recovery equipment comprises a hydrochloric acid recovery device and an exhaust gas processing device, wherein the hydrochloric acid recovery device comprises a Venturi tube, the gas inlet of the Venturi tube is connected with a white carbon black processing tail gas inlet pipe; a liquid outlet is connected with the hydrochloric acid recovery device; and the gas outlet of the Venturi tube is connected with the exhaust gas processing device. By adopting the proposal, the recovery equipment solves the problem that white carbon black plugging equipment in the white carbon black tail gas processing technology leads the system resisting force to be increased. Simultaneously, as the Venturi tube and two level washing of a washer are added, the temperature of tail gas entering an absorption tower is greatly reduced (less than 50 degrees Celsius); and obviously, the purpose can also be fundamentally realized by adopting a single Venturi tube. The recovery equipment improves absorption efficiency, reduces material consumption, and ensures standard emission of tail gas.
Description
Technical field
The utility model relates to a kind of tail gas treatment device of chemical technology field, relates in particular to a kind of reclaimer of tail gas in production of gas-phase silica.
Background technology
Gas-phase silica is the ultra tiny unbodied SiO 2 powder that has performance hydroxyl and adsorbed water that is generated by organosilyl high-temperature hydrolysis of chlorides such as silicon tetrachloride or methyl trichlorosilane, has particle diameter little (only tens nanometers), specific area greatly (greater than 150m
2/ g), characteristics such as chemical purity height, dispersive property be good.Belonging to the high-tech nano-scale oxide, also is one of nano material that at present in the world can large-scale industrial production.Gas-phase silica is used widely at many industrial circles such as rubber, coating, medicine, papermaking with its superior stability, reinforcement, thickening property and thixotropy.
The tail gas that produces in the production process of gas-phase silica (main component is a hydrogen chloride), traditional technology are that the method that adopts the falling-film tower absorbing hydrogen chloride to make hydrochloric acid recycles.This method is to produce the maturation process of hydrochloric acid with hydrogen chloride, but in reclaiming tail gas in production of gas-phase silica, but has following problem:
1, the white carbon in the tail gas easily stops up the tubulation of falling-film tower, and white carbon that can not sedimentation in tubulation enters the absorption tower, easily causes stuffing hole to stop up, and production can not be moved for a long time continuously.
2, the exhaust temperature of gas-phase silica directly enters falling-film tower than higher (generally more than 100 ℃), not only influences the absorption of hydrogen chloride, and can influence the service life of falling-film tower.
Summary of the invention
The utility model is for solving the deficiencies in the prior art, a kind of recovery method of tail gas in production of gas-phase silica is provided, this method adopts Venturi tube to handle tail gas, the exhaust temperature that enters the absorption tower is descended greatly, improved absorption efficiency, reduce material loss, guaranteed the qualified discharge of tail gas.
For achieving the above object, the utility model is taked following technical scheme:
This equipment comprises salt acid-restoring plant and emission-control equipment, and the salt acid-restoring plant comprises Venturi tube, and the air inlet of Venturi tube connects white carbon black production tail gas inlet pipe, and liquid outlet connects the salt acid-restoring plant, and the gas outlet of Venturi tube connects emission-control equipment.
As preferably, above-mentioned salt acid-restoring plant also comprises scrubbing tower, and the gas outlet of Venturi tube connects scrubbing tower, and the gas outlet of scrubbing tower connects emission-control equipment, and the liquid outlet of scrubbing tower connects the salt acid-restoring plant.
As preferably, above-mentioned emission-control equipment comprises concentrated acid tower, diluted acid tower and neutralizing tower, and the gas outlet of scrubbing tower connects the concentrated acid tower, and the gas outlet of concentrated acid tower connects the diluted acid tower, and the gas outlet of diluted acid connects the tower neutralizing tower.As preferred again, described concentrated acid tower, diluted acid tower and neutralizing tower are respectively equipped with filler.
As preferably, above-mentioned Venturi tube and the feed tube of scrubbing tower are connected the liquid outlet of concentrated acid tower respectively by pump, and the feed tube of concentrated acid tower connects the liquid outlet of diluted acid tower by pump, and the feed tube of diluted acid tower connects the water source.
As preferably, the inlet of above-mentioned neutralizing tower is connected by circulating pump with liquid outlet.
In the utility model, the tail gas that produces in the production process of gas-phase silica by Venturi tube and the washing of scrubbing tower two-stage, washes away the white carbon of carrying secretly in the tail gas.After the tail gas after the washing absorbed by concentrated acid tower, diluted acid tower two-stage, most hydrogen chloride were absorbed, pass through again in the neutralizing tower and after, hydrogen chloride is removed fully, the tail gas qualified discharge.The hydrochloric acid that Venturi tube, scrubbing tower come out is made byproduct after filtering and is sold.
Adopt scheme of the present utility model, solved white carbon occluding device in the white carbon tail gas treatment process, the problem that SR is increased.Simultaneously,, the exhaust temperature that enters the absorption tower is descended (＜50 ℃) greatly, adopt independent Venturi tube also can realize above-mentioned purpose substantially certainly owing to increased Venturi tube and the washing of scrubbing tower two-stage.The utility model has improved absorption efficiency, has reduced material loss, has guaranteed the qualified discharge of tail gas.
Description of drawings
Fig. 1 process chart of the present utility model.
Fig. 2 is an equipment structure chart of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is made a detailed explanation.
The reclaimer of tail gas in production of gas-phase silica as shown in Figure 2, this reclaimer comprise Venturi tube 1, scrubbing tower 2, concentrated acid tower 3, diluted acid tower 4 and neutralizing tower 5.Venturi tube 1 air inlet connects white carbon black production tail gas inlet pipe, and the gas outlet connects scrubbing tower 2; The gas outlet of scrubbing tower 2 connects concentrated acid tower 3; The gas outlet of concentrated acid tower 3 connects diluted acid tower 4; The gas outlet of diluted acid connects tower neutralizing tower 5.The liquid outlet of Venturi tube 1, scrubbing tower 2 connects salt acid-restoring plant 6; The feed tube of Venturi tube 1 and scrubbing tower 2 is connected the liquid outlet of concentrated acid tower 3 respectively by pump, the feed tube of concentrated acid tower 3 connects the liquid outlet of diluted acid tower 4 by pump, the feed tube of diluted acid tower 4 connects the water source, and the inlet of neutralizing tower 5 is connected by circulating pump with liquid outlet.Described concentrated acid tower 3, diluted acid tower 4 and neutralizing tower 5 are respectively equipped with filler.
As shown in Figure 1, white carbon black production tail gas by Venturi tube 1, is fully washed white carbon black production tail gas by water or hydrochloric acid; Tail gas after the washing washs once more by scrubbing tower 2; Tail gas after scrubbing tower 2 comes out absorbs through concentrated acid tower 3 and diluted acid tower 4 again, again by neutralizing tower 5 back emptying; The hydrochloric acid that Venturi tube 1 and scrubbing tower 2 come out reclaims by filtering the back.The cleaning solution of Venturi tube 1 and scrubbing tower 2 derives from concentrated acid tower 3; The cleaning solution of concentrated acid tower 3 derives from diluted acid tower 4; The cleaning solution of diluted acid tower 4 is a water; After adding liquid caustic soda in the neutralizing tower 5, liquid caustic soda recycles.
Claims (6)
1. the reclaimer of tail gas in production of gas-phase silica, this equipment comprises salt acid-restoring plant and emission-control equipment, it is characterized in that: the salt acid-restoring plant comprises Venturi tube (1), the air inlet of Venturi tube (1) connects white carbon black production tail gas inlet pipe, liquid outlet connects salt acid-restoring plant (6), and the gas outlet of Venturi tube (1) connects emission-control equipment.
2. the reclaimer of tail gas in production of gas-phase silica according to claim 1, it is characterized in that: the salt acid-restoring plant also comprises scrubbing tower (2), the gas outlet of Venturi tube (1) connects scrubbing tower (2), the gas outlet of scrubbing tower (2) connects emission-control equipment, and the liquid outlet of scrubbing tower (2) connects salt acid-restoring plant (6).
3. the reclaimer of tail gas in production of gas-phase silica according to claim 1 and 2, it is characterized in that: emission-control equipment comprises concentrated acid tower (3), diluted acid tower (4) and neutralizing tower (5), the gas outlet of scrubbing tower (2) connects concentrated acid tower (3), the gas outlet of concentrated acid tower (3) connects diluted acid tower (4), and the gas outlet of diluted acid connects tower neutralizing tower (5).
4. the reclaimer of tail gas in production of gas-phase silica according to claim 3, it is characterized in that: described concentrated acid tower (3), diluted acid tower (4) and neutralizing tower (5) are respectively equipped with filler.
5. the reclaimer of tail gas in production of gas-phase silica according to claim 3, it is characterized in that: Venturi tube (1) and the feed tube of scrubbing tower (2) are connected the liquid outlet of concentrated acid tower (3) respectively by pump, the feed tube of concentrated acid tower (3) is by the liquid outlet of pump connection diluted acid tower (4), and the feed tube of diluted acid tower (4) connects the water source.
6. the reclaimer of tail gas in production of gas-phase silica according to claim 3, it is characterized in that: the inlet of neutralizing tower (5) is connected by circulating pump with liquid outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201145962U CN201361514Y (en) | 2009-03-02 | 2009-03-02 | Recovery equipment of gas-phase white carbon black processing tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201145962U CN201361514Y (en) | 2009-03-02 | 2009-03-02 | Recovery equipment of gas-phase white carbon black processing tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201361514Y true CN201361514Y (en) | 2009-12-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201145962U Expired - Lifetime CN201361514Y (en) | 2009-03-02 | 2009-03-02 | Recovery equipment of gas-phase white carbon black processing tail gas |
Country Status (1)
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| CN (1) | CN201361514Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102120120A (en) * | 2010-12-07 | 2011-07-13 | 朝阳黑猫伍兴岐炭黑有限责任公司 | Treatment method of carbon black tail gas |
| CN101513585B (en) * | 2009-03-02 | 2012-06-27 | 浙江富士特硅材料有限公司 | Device for recycling tail gas in production of gas-phase silica |
| CN103752136A (en) * | 2014-01-20 | 2014-04-30 | 浙江富士特集团有限公司 | System for treating tail gas produced by white carbon black production by gas phase method |
| CN104415645A (en) * | 2013-08-31 | 2015-03-18 | 福建豪邦化工有限公司 | System for preparing dichloropropanol |
| CN109569176A (en) * | 2019-01-23 | 2019-04-05 | 江苏迪思朗环境科技有限公司 | Environmental treatment system for gas-phase silica |
-
2009
- 2009-03-02 CN CNU2009201145962U patent/CN201361514Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101513585B (en) * | 2009-03-02 | 2012-06-27 | 浙江富士特硅材料有限公司 | Device for recycling tail gas in production of gas-phase silica |
| CN102120120A (en) * | 2010-12-07 | 2011-07-13 | 朝阳黑猫伍兴岐炭黑有限责任公司 | Treatment method of carbon black tail gas |
| CN104415645A (en) * | 2013-08-31 | 2015-03-18 | 福建豪邦化工有限公司 | System for preparing dichloropropanol |
| CN103752136A (en) * | 2014-01-20 | 2014-04-30 | 浙江富士特集团有限公司 | System for treating tail gas produced by white carbon black production by gas phase method |
| CN109569176A (en) * | 2019-01-23 | 2019-04-05 | 江苏迪思朗环境科技有限公司 | Environmental treatment system for gas-phase silica |
| CN109569176B (en) * | 2019-01-23 | 2021-07-16 | 江苏迪思朗环境科技有限公司 | A environmental treatment system for fumed silica |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091216 |
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| CX01 | Expiry of patent term |