CN106693616A - Method for repairing inner wall of acid-making absorption tower - Google Patents
Method for repairing inner wall of acid-making absorption tower Download PDFInfo
- Publication number
- CN106693616A CN106693616A CN201510791433.8A CN201510791433A CN106693616A CN 106693616 A CN106693616 A CN 106693616A CN 201510791433 A CN201510791433 A CN 201510791433A CN 106693616 A CN106693616 A CN 106693616A
- Authority
- CN
- China
- Prior art keywords
- tower
- lead
- acid
- absorption tower
- steel plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
- C01B17/76—Preparation by contact processes
- C01B17/80—Apparatus
- C01B17/806—Absorbers; Heat exchangers
Abstract
The invention provides a method for preparing an inner wall of an acid-making absorption tower. After an upper head of the absorption tower of which an upper connection pipeline is removed is hung and stabilized, a flange connecting piece is disassembled; and after the flange connecting piece is disassembled, an upper tower body is hung onto the ground. A man hole is cut out at a downward position of the upper tower body in a range of 1.65 to 1.7m, a lead lining layer is separated from a tower wall steel plate, a slate pencil is used for marking, a marked part is cut apart by gas welding and the upper tower body is hung onto the ground. The lead lining layer at the repaired position is cut off, and then a tower wall steel plate is ground and processed by hydrochloric acid. The tower wall steel plate is subjected to lead patching by a lead bar, a thickness of carrying out lead patching for the first time is 2.5 to 3.6mm, and a thickness of carrying out lead patching for the second time is 1.5 to 2.5mm. The man hole is enveloped with a lead plate with a thickness of 4.5 to 5.5mm, and a joint is completely full-welded; then leakage testing is carried out by hydrochloric acid until no leakage point is generated and the acid-making absorption tower is qualified. According to the method provided by the invention, the problem of internal leakage of the absorption tower can be effectively solved, blockage of a sulphuric acid pump and a sulfuric acid cooler is avoided, the service life of an acid-making pipeline is prolonged, repair cost is reduced, a personal injury accident caused by acid leakage is avoided, and stability of production of an acid-making system is improved.
Description
Technical field
The repairing restorative procedure of inner wall of tower is absorbed the invention belongs to coking equipment technical field, more particularly to a kind of desulfurization acid-making process.
Background technology
Absorption tower is a visual plant of desulfurization acid-making process during coke oven gas purification, is divided into top tower body and bottom tower body
Two parts.Absorption tower bottom tower body outermost layer is steel plate tower wall, and the inwall of steel plate tower wall is provided with lining with lead layer, and hypomere is in tower wall
Lining brick layer is also built between inwall and lining with lead layer by laying bricks or stones.In During Process of Long-term Operation, easily there is bulge seepage in its lining with lead layer on absorption tower
Phenomenon, in the sour mud reflux that lining with lead layer is formed after sulfuric acid corrosion to absorption tower, causes sulfuric acid pump and sulfuric acid cooler to block etc. one
Series of problems, not only increases pipeline maintenance expense, directly affects the stability of acid making system production, and easily causes the person
Injury accident.
The content of the invention
The present invention is intended to provide one kind can avoid leaking phenomenon in absorption tower, anti-leak-stopping acid injury accident reduces maintenance cost, it is ensured that
The relieving haperacidity of system production stabilization absorbs inner wall of tower restorative procedure.
Therefore, the technical solution that the present invention is taken is：
A kind of relieving haperacidity absorbs inner wall of tower restorative procedure, and its specific method and step are：
(1) absorption tower top connecting pipe is removed, is hung absorption tower top end socket with crane after holding, dismounting flange connection
Position fastener, tears rear crane open and absorption tower top end socket is sling and put to ground；
(2) cut Access Opening with portable cutting machine or blade self-absorption tower top tower body down 1.65~1.7m, by lining with lead layer with
After tower wall steel plate is separated, rule in lining with lead layer and tower wall steel plate layer with slate pencil, then after hanging absorption tower upper flange with crane, used
Gas welding cuts open line position, and the top tower body that then will be cut off with crane hangs on the ground；
(3) the lining with lead layer complete resection of top tower body helpdesk after cleaning is dried, is used into portable mill with portable cutting machine or blade
Ray machine is processed tower wall polishing steel plate de-layer skin with hydrochloric acid；
(4) liquid medicine on leads is carried out into pool lead to the tower wall steel plate after treatment, first pass pool lead thickness is 2.5~3.5mm, the
Two times is 1.5~2.5mm；
(5) after pool lead terminates, will be encased with 4.5~5.5mm thickness stereotypes at population, and interface full weld is complete；Then use
Hydrochloric acid does leak test treatment, untill qualified without leak source；
(6) by device reset, top tower body and Pipe installing are recovered.
Beneficial effects of the present invention are：
The present invention can effectively solve the problems, such as the interior leakage on absorption tower, it is to avoid the blocking of sulfuric acid pump and sulfuric acid cooler, extend relieving haperacidity pipeline
Service life, reduce spare parts consumption and maintenance cost, prevent the leakage personal injury accident that causes of acid, improve acid making system production
Stability.
Brief description of the drawings
Fig. 1 is absorption tower bottom tower body structure sectional view.
In figure：Absorption tower top tower body 1, lining with lead layer 2, lining brick layer 3, stereotype 4, tower wall steel plate 5.
Specific embodiment
As seen from Figure 1, absorption tower top tower body 1 includes the lining with lead layer 2 and lining brick layer 3 of outer layer tower wall steel plate 5 and liner.
The specific method and step that relieving haperacidity of the present invention absorbs inner wall of tower reparation be：
1st, absorption tower top connecting pipe is removed, is hung the end socket of absorption tower top tower body 1 with crane after holding, disassembly method
Blue connecting portion fastener, the end socket of absorption tower top tower body 1 after tearing open sling and put to ground with crane.
2nd, Access Opening is cut with portable cutting machine or blade self-absorption tower top tower body 1 down 1.65m, by lining with lead layer 2 and tower
After wall steel plate 5 is separated, rule on lining with lead layer 2 and tower wall steel plate 5 with slate pencil, then after hanging absorption tower upper flange with crane,
Line position is cut open with gas welding, is then hung on the ground with the absorption tower top tower body 1 that crane will cut off.
3rd, with portable cutting machine or blade by lining with lead 2 complete resection of layer of the helpdesk of absorption tower top tower body 1, after cleaning is dried,
Tower wall steel plate 5 is polished de-layer skin with portable sanding machine, and is processed with hydrochloric acid.
4th, liquid medicine on leads is carried out into pool lead to the tower wall steel plate 5 after treatment, first pass pool lead thickness is 3mm, and second time is 2
mm。
5th, after pool lead terminates, will be encased with 5mm thickness stereotypes at population, and interface full weld is complete；Then tried with hydrochloric acid
Drain process, untill qualified without leak source.
6th, by device reset, after recovering absorption tower top tower body 1 and Pipe installing, that is, whole pool lead process is completed.
Claims (1)
1. a kind of relieving haperacidity absorbs inner wall of tower restorative procedure, it is characterised in that specific method and step are：
(1) absorption tower top connecting pipe is removed, is hung absorption tower top end socket with crane after holding,
Dismounting flange connecting portion fastener, tears rear crane open and absorption tower top end socket is sling and put to ground；
(2) Access Opening is cut with portable cutting machine or blade self-absorption tower top tower body down 1.65~1.7m,
After lining with lead layer is separated with tower wall steel plate, rule in lining with lead layer and tower wall steel plate layer with slate pencil, then hung with crane
Firmly after the upper flange of absorption tower, line position is cut open with gas welding, the top tower body that then will be cut off with crane is hung
Put on the ground；
(3) with portable cutting machine or blade by the lining with lead layer complete resection of top tower body helpdesk, cleaning is dried
Afterwards, with portable sanding machine by tower wall polishing steel plate de-layer skin, and processed with hydrochloric acid；
(4) liquid medicine on leads being carried out into pool lead to the tower wall steel plate after treatment, first pass pool lead thickness is 2.5~
3.5mm, second time is 1.5~2.5mm；
(5) after pool lead terminates, will be encased with 4.5~5.5mm thickness stereotypes at population, and by interface full weld
Completely；Then do leak test with hydrochloric acid to process, untill qualified without leak source；
(6) by device reset, top tower body and Pipe installing are recovered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510791433.8A CN106693616B (en) | 2015-11-17 | 2015-11-17 | A kind of relieving haperacidity absorption inner wall of tower restorative procedure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510791433.8A CN106693616B (en) | 2015-11-17 | 2015-11-17 | A kind of relieving haperacidity absorption inner wall of tower restorative procedure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106693616A true CN106693616A (en) | 2017-05-24 |
| CN106693616B CN106693616B (en) | 2019-04-26 |
Family
ID=58933253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510791433.8A Active CN106693616B (en) | 2015-11-17 | 2015-11-17 | A kind of relieving haperacidity absorption inner wall of tower restorative procedure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106693616B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551197A (en) * | 2009-05-14 | 2009-10-07 | 瓮福（集团）有限责任公司 | A pyrite-based sulphuric acid roaster cooling calandria repairing method |
| CN102424872A (en) * | 2011-12-01 | 2012-04-25 | 天津钢铁集团有限公司 | Method for patching damaged blast furnace hot air pipeline inner liner in hot state |
| CN103292599A (en) * | 2013-05-30 | 2013-09-11 | 山西太钢不锈钢股份有限公司 | Method for repairing housing of hot blast heater in late service period |
-
2015
- 2015-11-17 CN CN201510791433.8A patent/CN106693616B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551197A (en) * | 2009-05-14 | 2009-10-07 | 瓮福（集团）有限责任公司 | A pyrite-based sulphuric acid roaster cooling calandria repairing method |
| CN102424872A (en) * | 2011-12-01 | 2012-04-25 | 天津钢铁集团有限公司 | Method for patching damaged blast furnace hot air pipeline inner liner in hot state |
| CN103292599A (en) * | 2013-05-30 | 2013-09-11 | 山西太钢不锈钢股份有限公司 | Method for repairing housing of hot blast heater in late service period |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106693616B (en) | 2019-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205556724U (en) | A smooth hammer of improved generation for quick replacement blast -furnace tuyere | |
| CN108003901A (en) | A kind of coke oven bridge tube replacing options and its replacement auxiliary device | |
| CN109397188B (en) | Auxiliary anode sheath taking-out device and application method thereof | |
| CN205208032U (en) | Low pressure steel pipeline trapping devices | |
| CN106693616A (en) | Method for repairing inner wall of acid-making absorption tower | |
| CN107893135B (en) | A kind of last furnace shell Local Cracking processing method | |
| CN207018706U (en) | Four-way for roof vent pipe crosses attachment means | |
| CN205063849U (en) | Formula oil pipe tip screw thread protector is dismantled to non - spiral | |
| CN109825658A (en) | The method that processing hot wind drop-bottom leaks out | |
| CN204531417U (en) | A kind of formwork fastener being beneficial to heavy thickness concrete cover and controlling | |
| CN211395718U (en) | Plugging device for dewatering well | |
| CN104631477B (en) | A kind of method that dewatering device is installed and blocked in processing foundation ditch | |
| CN204337890U (en) | Vertical filter | |
| CN208831023U (en) | A kind of device being applicable in vacuum chuck absorption steel pipe sheet | |
| CN207405191U (en) | A kind of shell of blast furnace standard prosthetic device | |
| CN206318988U (en) | A kind of marsh-gas fermentation tank | |
| CN207391174U (en) | Ultrasonic wave/ozone coupling advanced oxidation integration apparatus | |
| CN203892796U (en) | Supporting device for repairing of liner of inspection well | |
| CN109185598A (en) | Plugging device for rhone quick blocking discharge outlet | |
| CN204892459U (en) | Protector is washed in hoist and mount of acid -base equipment | |
| CN210905608U (en) | Industrial desulfurization is with taking sulphur residue processing apparatus | |
| CN204380379U (en) | A kind of nitric acid exhaust system | |
| CN219059753U (en) | Railway bridge deck drain pipe hole plugging device | |
| CN205352081U (en) | LF stove water cooled cover | |
| CN104631821A (en) | Form board fastening device facilitating control on large-thickness concrete protecting layer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |