CN102029101A - Method and equipment for producing negative pressure in an anhydrous hydrogen fluoride production system - Google Patents
Method and equipment for producing negative pressure in an anhydrous hydrogen fluoride production system Download PDFInfo
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- CN102029101A CN102029101A CN2010105470626A CN201010547062A CN102029101A CN 102029101 A CN102029101 A CN 102029101A CN 2010105470626 A CN2010105470626 A CN 2010105470626A CN 201010547062 A CN201010547062 A CN 201010547062A CN 102029101 A CN102029101 A CN 102029101A
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- negative pressure
- tourie
- hydrogen fluoride
- tail gas
- pressure circulating
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Abstract
The invention discloses a process and equipment for treating tail gas of an anhydrous hydrogen fluoride production system, in particular to a method and equipment for producing negative pressure in the anhydrous hydrogen fluoride production system. In the method for producing the negative pressure in the anhydrous hydrogen fluoride production system, a primary absorption tank and a secondary absorption tank which are connected in series are additionally arranged at a tail gas discharge port of an absorption tower; two parallel negative pressure circulating tanks are connected to the rear side of the secondary absorption tank to ensure that the tail gas passes through the primary absorption tank, the secondary absorption tank, a water ejector and the negative pressure circulating tank, and hydrogen fluoride, fluosilicic acid and hydrogen sulfide in the tail gas are absorbed by water to generate side product fluosilicic acid, and the negative pressure state in the system is realized by remote control. By the method and the equipment for producing the negative pressure in the anhydrous hydrogen fluoride system, the negative pressure in the system is stable, the tail gas is absorbed by the two stages of absorption tanks to ensure that no polluting gas exists in the exhaust gas, zero emission of sewage can be achieved by circulating absorption from lower to higher, the quality of fluosilicic acid is stable and controllable to meet various requirements of clients.
Description
(1) technical field
The present invention relates to a kind of Processes and apparatus of anhydrous hydrogen fluoride production system vent gas treatment, particularly a kind of method and apparatus of in the anhydrous hydrogen fluoride production system, making negative pressure.
(2) background technology
Intrasystem hydrogen fluoride, hydrogen sulfide, fluorite flour dust overflow contaminated environment need to keep micro-vacuum state in the system when anhydrous hydrogen fluoride is produced when preventing that anhydrous hydrogen fluoride from producing.The medium-sized and small enterprises of present domestic production anhydrous hydrogen fluoride, great majority adopt plastic fans to make the micro-vacuum states of anhydrous hydrogen fluoride production system.Make large and medium-sized enterprise's investigation of the little negative pressure of anhydrous hydrogen fluoride production system by Shandong, Jiangsu, Jiangxi, zhejiang and other places being used plastic fan, find to use plastic fan to have the negative pressure shakiness aborning, equipment is loaded down with trivial details, maintenance cost is high, the excessive sewage discharge problem of environment pollution caused of pernicious gas often takes place in byproduct fluosilicic acid quality fluctuation.
(3) summary of the invention
The present invention is in order to remedy the defective of prior art, provide a kind of succinct, efficient, stable, operating cost is low, and maintenance and repair is convenient, can prevent the method and apparatus of making negative pressure in the anhydrous hydrogen fluoride production system of hydrogen fluoride, fluosilicic acid, the excessive contaminated environment of hydrogen sulfide.
The present invention is achieved through the following technical solutions:
A kind of method of in the anhydrous hydrogen fluoride production system, making negative pressure, it is characterized in that: set up one-level tourie and the secondary tourie that is in series at the tail gas from absorption tower floss hole, one-level tourie and secondary tourie are connected with Venturi absorber and circulating pump respectively, secondary tourie rear side is connected with two negative pressure circulating tanks that are in parallel, the negative pressure circulating tank is connected with water ejector and fluorine alloy water pump, make tail gas successively by the one-level tourie, the secondary tourie, water ejector and negative pressure circulating tank, hydrogen fluoride in the tail gas, fluosilicic acid, hydrogen sulfide is absorbed by water and generates by-product commodity fluosilicic acid, and by negative pressure state in the Long-distance Control realization system
Its processing step is as follows:
(1) before system drives, adds an amount of water respectively to two touries and two negative pressure circulating tanks;
(2) system drives the starting stage, and on-condensible gas is more in the system, need open two negative pressure circulating tanks and supporting water ejector and fluorine alloy water pump simultaneously;
(3) after system feeds intake normally, only need make a negative pressure circulating tank and supporting water ejector and fluorine alloy water pump operation, another negative pressure circulating tank and supporting water ejector and fluorine alloy water pump transfer to standby;
(4) through chemical examination, when the fluosilicic acid content in the operating one-level tourie reaches customer requirement, the qualified fluosilicic acid of chemical examination beaten to pan tank sell, then the circulation fluid in the secondary tourie is mended the one-level tourie, the circulation fluid that concentration is high in the negative pressure circulating tank is mended toward the secondary tourie, moisturizing is standby in the negative pressure circulating tank then again.
The present invention also provides a kind of above-mentioned equipment of making the method for negative pressure in the anhydrous hydrogen fluoride production system of realizing, comprise and be installed in one-level tourie and the secondary tourie that the tail gas from absorption tower floss hole is in series, the one-level tourie is connected with Venturi absorber A and circulating pump A, the secondary tourie is connected with Venturi absorber B and circulating pump B, secondary tourie rear side is connected with two negative pressure circulating tanks that are in parallel, and two negative pressure circulating tanks are connected with water ejector and the fluorine alloy water pump that matches with it respectively.The negative pressure circulating tank is connected with the emptying chimney, with the tail gas emptying.
The invention has the beneficial effects as follows: the method and apparatus that should in the anhydrous hydrogen fluoride production system, make negative pressure, in the production process, negative regulation in the system, absorb tail gas by the two-stage tourie, pollution-free gas in the gas that can guarantee to discharge, by circulation absorption from low to high, can reach sewage zero-discharge, the steady quality of byproduct fluosilicic acid is reliable, can satisfy client's variation requirement, than little negative pressure of using plastic fan manufacturing anhydrous hydrogen fluoride production system, 80 yuan of the operation and maintenance costs that reduce per ton, economize on electricity 30KWH.
(4) description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Accompanying drawing 1 is made the structural representation of the equipment of negative pressure in the anhydrous hydrogen fluoride production system for the present invention.
Among the figure, 1 one-level tourie, 2 secondary touries, 3 Venturi absorber A, 4 negative pressure circulating tanks, 5 fluorine alloy water pumps, 6 water ejectors, 7 emptying chimneys, 8 circulating pump A, 9 circulating pump B, 10 Venturi absorber B.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.Should in the anhydrous hydrogen fluoride production system, make the method for negative pressure, it is characterized in that: set up one-level tourie and the secondary tourie that is in series at the tail gas from absorption tower floss hole, one-level tourie and secondary tourie are connected with Venturi absorber and circulating pump respectively, secondary tourie rear side is connected with two negative pressure circulating tanks that are in parallel, the negative pressure circulating tank is connected with water ejector and fluorine alloy water pump, make tail gas successively by the one-level tourie, the secondary tourie, water ejector and negative pressure circulating tank, hydrogen fluoride in the tail gas, fluosilicic acid, hydrogen sulfide is absorbed by water and generates by-product commodity fluosilicic acid, and by negative pressure state in the Long-distance Control realization system
Its processing step is as follows:
(1) before system drives, adds an amount of water respectively to two touries and two negative pressure circulating tanks;
(2) system drives the starting stage, and on-condensible gas is more in the system, need open two negative pressure circulating tanks and supporting water ejector and fluorine alloy water pump simultaneously;
(3) after system feeds intake normally, only need make a negative pressure circulating tank and supporting water ejector and fluorine alloy water pump operation, another negative pressure circulating tank and supporting water ejector and fluorine alloy water pump transfer to standby;
(4) through chemical examination, when the fluosilicic acid content in the operating one-level tourie reaches customer requirement, the qualified fluosilicic acid of chemical examination beaten to pan tank sell, then the circulation fluid in the secondary tourie is mended the one-level tourie, the circulation fluid that concentration is high in the negative pressure circulating tank is mended toward the secondary tourie, moisturizing is standby in the negative pressure circulating tank then again.
This invention also provides a kind of above-mentioned equipment of making the method for negative pressure in the anhydrous hydrogen fluoride production system of realizing, comprise and be installed in one-level tourie 1 and the secondary tourie 2 that the tail gas from absorption tower floss hole is in series, one-level tourie 1 is connected with Venturi absorber A3 and circulating pump A8, secondary tourie 2 is connected with Venturi absorber B10 and circulating pump B9, secondary tourie 2 rear sides are connected with 4, two the negative pressure circulating tanks 4 of two negative pressure circulating tanks that are in parallel and are connected with water ejector 6 and the fluorine alloy water pump 5 that matches with it respectively.Negative pressure circulating tank 4 is connected with emptying chimney 7.
Should in the anhydrous hydrogen fluoride production system, make the method and apparatus of negative pressure, by 4 effects of negative pressure circulating tank, can make negative regulation in the system, tail gas is by the dual absorption of one-level tourie 1 and secondary tourie 2, can guarantee the pollution-free gas of the gas of discharging, and reach the zero-emission of sewage, prevented hydrogen fluoride effectively, fluosilicic acid, excessive contaminated environment such as hydrogen sulfide, simultaneously, byproduct fluosilicic acid in the one-level tourie 1 stable and controllable for quality, can satisfy client's diversified demand, this method is than using plastic fan to make little negative pressure of anhydrous hydrogen fluoride production system, 80 yuan of the operation and maintenance costs that reduce per ton, economize on electricity 30KWH has very big economic benefit.
Claims (3)
1. method of in the anhydrous hydrogen fluoride production system, making negative pressure, it is characterized in that: set up one-level tourie and the secondary tourie that is in series at the tail gas from absorption tower floss hole, one-level tourie and secondary tourie are connected with Venturi absorber and circulating pump respectively, secondary tourie rear side is connected with two negative pressure circulating tanks that are in parallel, the negative pressure circulating tank is connected with water ejector and fluorine alloy water pump, make tail gas successively by the one-level tourie, the secondary tourie, water ejector and negative pressure circulating tank, hydrogen fluoride in the tail gas, fluosilicic acid, hydrogen sulfide is absorbed by water and generates by-product commodity fluosilicic acid, and by negative pressure state in the Long-distance Control realization system
Its processing step is as follows:
(1) before system drives, adds an amount of water respectively to two touries and two negative pressure circulating tanks;
(2) system drives the starting stage, and on-condensible gas is more in the system, need open two negative pressure circulating tanks and supporting water ejector and fluorine alloy water pump simultaneously;
(3) after system feeds intake normally, only need make a negative pressure circulating tank and supporting water ejector and fluorine alloy water pump operation, another negative pressure circulating tank and supporting water ejector and fluorine alloy water pump transfer to standby;
(4) through chemical examination, when the fluosilicic acid content in the operating one-level tourie reaches customer requirement, the qualified fluosilicic acid of chemical examination beaten to pan tank sell, then the circulation fluid in the secondary tourie is mended the one-level tourie, the circulation fluid that concentration is high in the negative pressure circulating tank is mended toward the secondary tourie, moisturizing is standby in the negative pressure circulating tank then again.
2. the described equipment of in the anhydrous hydrogen fluoride production system, making negative pressure of a claim 1, it is characterized in that: comprise being installed in one-level tourie (1) and the secondary tourie (2) that the tail gas from absorption tower floss hole is in series, one-level tourie (1) is connected with Venturi absorber A (3) and circulating pump A (8), secondary tourie (2) is connected with Venturi absorber B (10) and circulating pump B (9), secondary tourie (2) rear side is connected with two the negative pressure circulating tanks (4) that are in parallel, and two negative pressure circulating tanks (4) are connected with water ejector (6) and the fluorine alloy water pump (5) that matches with it respectively.
3. the equipment of making negative pressure in the anhydrous hydrogen fluoride production system according to claim 2, it is characterized in that: negative pressure circulating tank (4) is connected with emptying chimney (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010547062 CN102029101B (en) | 2010-11-17 | 2010-11-17 | Method and equipment for producing negative pressure in an anhydrous hydrogen fluoride production system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010547062 CN102029101B (en) | 2010-11-17 | 2010-11-17 | Method and equipment for producing negative pressure in an anhydrous hydrogen fluoride production system |
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| Publication Number | Publication Date |
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| CN102029101A true CN102029101A (en) | 2011-04-27 |
| CN102029101B CN102029101B (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010547062 Expired - Fee Related CN102029101B (en) | 2010-11-17 | 2010-11-17 | Method and equipment for producing negative pressure in an anhydrous hydrogen fluoride production system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106829983A (en) * | 2017-03-31 | 2017-06-13 | 瓮福（集团）有限责任公司 | A kind of preparation method of sodium metasilicate |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU880451A1 (en) * | 1979-05-18 | 1981-11-15 | Предприятие П/Я Р-6786 | Method of cleaning furnace gases at hydrogen fluoride production |
| CN1401409A (en) * | 2002-04-23 | 2003-03-12 | 周永德 | Safety environmentally friendly ammonia tail gas recovery technique by negative pressure process |
| CN1948149A (en) * | 2006-11-03 | 2007-04-18 | 浙江三美化工有限公司 | Method of producing refined fluorosilicic acid using fluorine containing tail gas in hydrofluoric acid production device |
| CN101439846A (en) * | 2007-11-19 | 2009-05-27 | 旷戈 | Novel process for producing fluorine hydride by batch process |
-
2010
- 2010-11-17 CN CN 201010547062 patent/CN102029101B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU880451A1 (en) * | 1979-05-18 | 1981-11-15 | Предприятие П/Я Р-6786 | Method of cleaning furnace gases at hydrogen fluoride production |
| CN1401409A (en) * | 2002-04-23 | 2003-03-12 | 周永德 | Safety environmentally friendly ammonia tail gas recovery technique by negative pressure process |
| CN1948149A (en) * | 2006-11-03 | 2007-04-18 | 浙江三美化工有限公司 | Method of producing refined fluorosilicic acid using fluorine containing tail gas in hydrofluoric acid production device |
| CN101439846A (en) * | 2007-11-19 | 2009-05-27 | 旷戈 | Novel process for producing fluorine hydride by batch process |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106829983A (en) * | 2017-03-31 | 2017-06-13 | 瓮福（集团）有限责任公司 | A kind of preparation method of sodium metasilicate |
| CN106829983B (en) * | 2017-03-31 | 2020-03-27 | 瓮福（集团）有限责任公司 | Preparation method of sodium silicate |
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| Publication number | Publication date |
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| CN102029101B (en) | 2013-06-05 |
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