CN105417501A - Cooling method for blower in sulfuric acid production - Google Patents
Cooling method for blower in sulfuric acid production Download PDFInfo
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- CN105417501A CN105417501A CN201410488775.8A CN201410488775A CN105417501A CN 105417501 A CN105417501 A CN 105417501A CN 201410488775 A CN201410488775 A CN 201410488775A CN 105417501 A CN105417501 A CN 105417501A
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- blower
- gas
- cool
- reflux line
- down method
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Abstract
The present invention is applied to the technical field of sulfuric acid production apparatuses, and relates to a blower cooling method for a large sulfuric acid production apparatus. The apparatus is characterized by, on a basis of an original flue gas sulfuric acid-making conversion workshop section flow, connecting a loop pipe, the diameter of which is about half of a main pipeline on a pipe between the blower outlet and a heat exchanger, the loop pipe connected to a drying tower flue gas inlet pipe, and under a circulating action of the blower, effectively reducing an operation temperature of the blower by nature cooling of the loop pipe. The loop pipe should be mounted with an anti-surge valve, or the associated valve is provided by the blower manufacturer. The valve can be shut off when the blower temperature is not high; when the blower needs to be cooled, the valve is shut on. The cooling method solves problems that the temperature rise of blower operation is too high, flow variation is less, a pipe mounting method is simple and cost consumption is small, and is a convenient and economic improvement scheme.
Description
Technical field
The present invention is applied to flue gas acid preparing engineering, relates to the flow scheme design of conversion section, is generally applied to fairly large flue gas acid preparing project.
Background technology
In the design cycle of flue gas acid preparing engineering conversion section, sulfur dioxide flue gas is extracted out by the drying tower of dry absorption section by gas blower, blasts in the interchanger of conversion section and carries out a series of intensification heat transfer process, then enters in convertor and carry out SO
2→ SO
3conversion reaction, thus realize by SO
2flue gas is to H
2sO
4conversion process.In whole Production Flow Chart, because gas blower needs continuous long term operation, service temperature can constantly rise, and blast volume is larger, and blasting time is longer, then temperature rise is higher, and the gas blower temperature rise of some Large sulfuric acid factories even can reach 100 DEG C.And temperature raises and is unfavorable for very much the normal operation of gas blower burning out motor, damaging internal circuit and blower fan component, be cause gas blower frequently to break down topmost reason.The unique method that current most sulfuric acid producer addresses this problem installs two gas blowers, the using and the reserved exactly, changes stand-by fan work when main blower breaks down.This passive solution not only will increase a large amount of costs of equipment, increases maintenance of the equipment difficulty, and can affect normal production, even cause quality product to decline.The operation temperature rise of gas blower is too high is the ubiquitous difficult problem of vitriol works, urgently a kind of more convenient, economic solution.
Summary of the invention
The object of the invention is the significantly temperature rise produced in operation for the large discharge gas blower of current fairly large relieving haperacidity project, in conversion process, add a kind of Novel pipeline with flue gas circuit.
By the smoke backflow operation in this pipeline; effectively can reduce the temperature rising that gas blower causes because working long hours; thus protection gas blower internal circuit and motor; greatly extend the work-ing life of gas blower; avoid causing the massive losses produced that stops production because of maintenance; a gas blower just can realize normal continuous seepage, and vitriol works can need not do the conservative process of the using and the reserved again to gas blower, save a large amount of facility investments.
Technical scheme of the present invention is: the cool-down method of gas blower in gas washing in SA production, for reducing the service temperature of gas blower in gas washing in SA production, it is characterized in that on the basis of the original flow process of flue gas acid preparing conversion section, from SO
2blower exit conduits connects a reflux line on the drying tower smoke inlet pipeline of dry absorption section, by Valve controlling, reduces gas blower working temperature.
Specifically on the basis of original flue gas acid preparing conversion section flow process, pipeline between blower export to interchanger connects the return that a caliber is approximately Trunk Line 1/2, be connected on drying tower gas approach pipeline, under the Circulation of gas blower, utilize the Temperature fall of reflux line, effectively reduce the working temperature of gas blower.
Reflux line must fill anti-surge valve, or provide mating valve by blower fan producer.This valve can be closed when gas blower temperature is not high, when needs are lowered the temperature for gas blower, open this valve.
Interface, for reducing pipeline material loss, can be opened near drying tower gas approach by described smoke backflow pipeline.
Described reflux line material is identical with main pipeline material.
Described reflux line adopts welding process to be connected on main pipeline.
Described reflux line and drying tower inlet pipeline adopt Flange joint.
The present invention solves the too high problem of blower operation temperature rise from technique, and flow process variation is few, and pipe installation method is simple, and cost consumption is little, is a kind of evolutionary approach of convenient economy.
Accompanying drawing explanation
Accompanying drawing is the schematic flow sheet relating to the embodiment of the present invention.
1-drying tower in accompanying drawing; 2-gas blower; 3-interchanger; 4-SO
2flue gas pipeline; 5-fan outlet SO
2flue gas pipeline; 6-cooling reflux pipeline; 7-heat exchanger exit SO
2flue gas pipeline; 8-electric butterfly valve; 9-anti-surge valve (or blower fan carries valve); 10-drying tower exports; The import of 11-drying tower.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.
Embodiment: the present embodiment as shown in Figure 1, SO
2flue gas self-desiccation tower outlet (10) is through SO
2flue gas pipeline (4), blasts interchanger (3) by gas blower (2), causes gas blower (2) device temperature to raise, open anti-surge valve (9), make part SO owing to working long hours
2flue gas enters drying tower import (11) through cooling reflux pipeline (6), makes drying tower (1) interior SO
2flue-gas temperature declines, and then enters the SO of gas blower
2flue-gas temperature declines, thus realizes the decline of blower equipment own temperature.
The automatic cooling of gas blower is realized by the control method of the present embodiment.
Claims (7)
1. the cool-down method of gas blower in gas washing in SA production, for reducing the service temperature of gas blower in gas washing in SA production, is characterized in that on the basis of the original flow process of flue gas acid preparing conversion section, from SO
2blower exit conduits connects a reflux line on the drying tower smoke inlet pipeline of dry absorption section, by Valve controlling, reduces gas blower working temperature.
2. cool-down method according to claim 1, is characterized in that the caliber of reflux line is Trunk Line caliber 1/2.
3. cool-down method according to claim 1, is characterized in that the interface of reflux line is opened near drying tower gas approach.
4. cool-down method according to claim 1, is characterized in that reflux line is equipped with anti-surge valve.
5. cool-down method according to claim 1, is characterized in that reflux line material is identical with main pipeline material.
6. cool-down method according to claim 1, is characterized in that reflux line adopts welding process to be connected on main pipeline.
7. cool-down method according to claim 1, is characterized in that reflux line and drying tower inlet pipeline adopt Flange joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410488775.8A CN105417501A (en) | 2014-09-23 | 2014-09-23 | Cooling method for blower in sulfuric acid production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410488775.8A CN105417501A (en) | 2014-09-23 | 2014-09-23 | Cooling method for blower in sulfuric acid production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105417501A true CN105417501A (en) | 2016-03-23 |
Family
ID=55496123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410488775.8A Pending CN105417501A (en) | 2014-09-23 | 2014-09-23 | Cooling method for blower in sulfuric acid production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105417501A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110980656A (en) * | 2019-12-12 | 2020-04-10 | 铜陵有色金属集团股份有限公司 | Converter heat preservation method of flue gas acid making system |
| CN111097285A (en) * | 2018-10-29 | 2020-05-05 | 中国石油化工股份有限公司 | Method for removing NOx by sulfuric acid device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101239707A (en) * | 2007-02-07 | 2008-08-13 | 江西铜业集团公司 | Sulfuric acid plant conversion system warming and cooling technique |
| CN204079487U (en) * | 2014-07-03 | 2015-01-07 | 浙江和鼎铜业有限公司 | Sulfuric acid conversion system |
-
2014
- 2014-09-23 CN CN201410488775.8A patent/CN105417501A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101239707A (en) * | 2007-02-07 | 2008-08-13 | 江西铜业集团公司 | Sulfuric acid plant conversion system warming and cooling technique |
| CN204079487U (en) * | 2014-07-03 | 2015-01-07 | 浙江和鼎铜业有限公司 | Sulfuric acid conversion system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111097285A (en) * | 2018-10-29 | 2020-05-05 | 中国石油化工股份有限公司 | Method for removing NOx by sulfuric acid device |
| CN110980656A (en) * | 2019-12-12 | 2020-04-10 | 铜陵有色金属集团股份有限公司 | Converter heat preservation method of flue gas acid making system |
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Application publication date: 20160323 |
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