CN106693616B - 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
- CN106693616B CN106693616B CN201510791433.8A CN201510791433A CN106693616B CN 106693616 B CN106693616 B CN 106693616B CN 201510791433 A CN201510791433 A CN 201510791433A CN 106693616 B CN106693616 B CN 106693616B
- Authority
- CN
- China
- Prior art keywords
- tower
- lead
- steel plate
- absorption tower
- acid
- 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.)
- Active
Links
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000002253 acid Substances 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 20
- 239000010959 steel Substances 0.000 claims abstract description 20
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 11
- 238000003466 welding Methods 0.000 claims abstract description 5
- 238000005498 polishing Methods 0.000 claims abstract description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000003814 drug Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000002271 resection Methods 0.000 claims description 3
- 239000010454 slate Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 14
- 238000012423 maintenance Methods 0.000 abstract description 5
- 208000027418 Wounds and injury Diseases 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 4
- 208000014674 injury Diseases 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000002791 soaking Methods 0.000 abstract 1
- 239000004575 stone Substances 0.000 abstract 1
- 239000011449 brick Substances 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention provides a method for repairing the inner wall of an acid making absorption tower, which is characterized in that after an upper seal head of the absorption tower with an upper connecting pipeline 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 on the ground. And cutting a manhole at a position 1.65-1.7 m below the upper tower body, separating the lead lining layer from the tower wall steel plate, marking by using a stone pen, cutting the marked part by using gas welding, and hanging on the ground. And cutting off the lead lining layer at the maintenance position, polishing the tower wall steel plate and treating the tower wall steel plate by hydrochloric acid. And (3) carrying out lead soaking on the tower wall steel plate by using a lead strip, wherein the thickness of the first time is 2.5-3.5 mm, and the thickness of the second time is 1.5-2.5 mm. Wrapping the human mouth with a lead plate with the thickness of 4.5-5.5 mm, and fully welding the human mouth completely; and then, hydrochloric acid is used for leakage test until no leakage point is qualified. The invention can effectively solve the problem of leakage in the absorption tower, avoid the blockage of the sulfuric acid pump and the sulfuric acid cooler, prolong the service life of the acid making pipeline, reduce the maintenance cost, avoid the personal injury accidents caused by acid leakage and improve the production stability of the acid making system.
Description
Technical field
The repairing for absorbing inner wall of tower the invention belongs to coking equipment technical field more particularly to a kind of desulfurization acid-making process is repaired
Compound method.
Background technique
Absorption tower is an important equipment of desulfurization acid-making process during coke oven gas purification, is divided into top tower body under
Portion's tower body two parts.Absorption tower bottom tower body outermost layer is steel plate tower wall, and the inner wall of steel plate tower wall is equipped with lining with lead layer, and lower section
Also building between tower wall inner wall and lining with lead layer has lining brick layer.In During Process of Long-term Operation, lining with lead layer easily occurs on absorption tower
Bulge leakage phenomenon in the sour mud reflux to absorption tower that lining with lead layer is formed after sulfuric acid corrosion, causes sulfuric acid pump and sulfuric acid cooling
A series of problems, such as device blocks, not only increases pipeline maintenance expense, directly affects the stability of acid making system production, Er Qierong
Easily cause personal injury accident.
Summary of the invention
The present invention is intended to provide leaking phenomenon in a kind of avoidable absorption tower, anti-leak-stopping acid injury accident reduces maintenance cost,
Guarantee that the stable relieving haperacidity of system production absorbs inner wall of tower restorative procedure.
For this purpose, technical solution adopted by the present invention is:
A kind of relieving haperacidity absorption inner wall of tower restorative procedure, specific method and step are as follows:
(1) absorption tower top connecting pipe is removed, after being held the hanging of absorption tower top end socket with crane, dismantles flange
Connecting portion fastener tears rear crane open and slings absorption tower top end socket and put to ground；
(2) with Access Opening is cut at portable cutting machine or blade self-absorption tower top tower body down 1.65~1.7m, by lining with lead
After layer is separated with tower wall steel plate, crossed with slate pencil in lining with lead layer and tower wall steel plate layer, then hang absorption tower upper flange with crane
Afterwards, scribing line position is cut open with gas welding, is then hung the top tower body cut off on the ground with crane；
(3) the lining with lead layer complete resection of top tower body helpdesk is used into hand after cleaning is dried with portable cutting machine or blade
Sanding machine is mentioned by tower wall polishing steel plate de-layer skin, and is handled with hydrochloric acid；
(4) by liquid medicine on leads, to treated, tower wall steel plate carries out pool lead, and first pass pool lead thickness is 2.5~3.5mm,
Second time is 1.5~2.5mm；
(5) it after the lead of the pool, will be encased at manhole with 4.5~5.5mm thickness stereotype, and interface is fully welded completely；Then
Leak test processing is done with hydrochloric acid, until no leak source is qualified；
(6) by device reset, restore top tower body and Pipe installing.
The invention has the benefit that
The present invention can effectively solve the problems, such as the interior leakage on absorption tower, avoid the blocking of sulfuric acid pump and sulfuric acid cooler, extend system
The service life in acid tube road reduces spare parts consumption and maintenance cost, prevents personal injury accident caused by leakage acid, improves relieving haperacidity system
The stability of system production.
Detailed description of the invention
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.
Relieving haperacidity of the present invention absorbs the specific method and step of inner wall of tower reparation are as follows:
1, absorption tower top connecting pipe is removed, after the hanging of 1 end socket of absorption tower top tower body is held with crane, disassembly
Top tower body 1 end socket in absorption tower is sling after tearing open with crane and is put to ground by flanged joint position fastener.
2, with cutting Access Opening at portable cutting machine or blade self-absorption tower top tower body 1 down 1.65m, by lining with lead layer 2 with
After tower wall steel plate 5 separates, crossed on lining with lead layer 2 and tower wall steel plate 5 with slate pencil, then hang absorption tower upper flange with crane
Afterwards, scribing line position is cut open with gas welding, is then hung the absorption tower top tower body 1 cut off on the ground with crane.
3, with portable cutting machine or blade by 2 complete resection of lining with lead layer of 1 helpdesk of absorption tower top tower body, cleaning is dried
Afterwards, it with portable sanding machine by the polishing de-layer skin of tower wall steel plate 5, and is handled with hydrochloric acid.
4, liquid medicine on leads being subjected to pool lead to treated tower wall steel plate 5, first pass pool lead thickness is 3mm, second time
For 2mm.
5, it after the lead of the pool, will be encased at manhole with 5mm thickness stereotype, and interface is fully welded completely；Then it is made of hydrochloric acid
Leak test processing, until no leak source is qualified.
6, device reset is completed into entire pool lead process after restoring absorption tower top tower body 1 and Pipe installing.
Claims (1)
1. a kind of relieving haperacidity absorbs inner wall of tower restorative procedure, which is characterized in that specific method and step are as follows:
(1) absorption tower top connecting pipe is removed, after being held the hanging of absorption tower top end socket with crane, dismantles flanged joint
Position fastener tears rear crane open and slings absorption tower top end socket and put to ground；
(2) with cutting Access Opening at portable cutting machine or blade self-absorption tower top tower body down 1.65~1.7m, by lining with lead layer with
It after tower wall steel plate separates, is crossed with slate pencil in lining with lead layer and tower wall steel plate layer, then after hanging absorption tower upper flange with crane, used
Gas welding cuts open scribing line position, is then hung the top tower body cut off on the ground with crane；
(3) with portable cutting machine or blade by the lining with lead layer complete resection of top tower body helpdesk, after cleaning is dried, with portable mill
Ray machine is handled tower wall polishing steel plate de-layer skin with hydrochloric acid；
(4) liquid medicine on leads being subjected to pool lead to treated tower wall steel plate, first pass pool lead thickness is 2.5~3.5mm, second
All over be 1.5~2.5mm；
(5) it after the lead of the pool, will be encased at manhole with 4.5~5.5mm thickness stereotype, and interface is fully welded completely；Then salt is used
Acid does leak test processing, until no leak source is qualified；
(6) by device reset, restore top tower body and Pipe installing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510791433.8A CN106693616B (en) | 2015-11-17 | 2015-11-17 | Method for repairing inner wall of acid making absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510791433.8A CN106693616B (en) | 2015-11-17 | 2015-11-17 | Method for repairing inner wall of acid making absorption tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106693616A CN106693616A (en) | 2017-05-24 |
| CN106693616B true 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 | Method for repairing inner wall of acid making absorption tower |
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 |
|---|---|
| CN106693616A (en) | 2017-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204769801U (en) | Dust hood car is absorbed on portable top of ladle hot repair | |
| CN204001662U (en) | A kind of fastening devices external member of Cantilever Beams | |
| CN108003901A (en) | A kind of coke oven bridge tube replacing options and its replacement auxiliary device | |
| CN106693616B (en) | Method for repairing inner wall of acid making absorption tower | |
| CN204138681U (en) | A kind of blast furnace overhaul scaling platform | |
| CN104060640A (en) | Dredger-used blockage-proof special mud discharging steel pipe and sewage discharging and dredging treating method of dredger | |
| CN207018706U (en) | Four-way for roof vent pipe crosses attachment means | |
| CN208966284U (en) | Liquid recovery device | |
| CN102847925A (en) | Raw aluminum liquid extraction device | |
| CN204337890U (en) | Vertical filter | |
| CN204525204U (en) | Flange face protective device | |
| RU115369U1 (en) | SNOW REMOVING SHOVEL (OPTIONS) | |
| CN109079292A (en) | A kind of cooling combustion gas steel pipe repairing welding method with pressure of pressure | |
| CN104404871A (en) | Treatment method for expansion joint of bridge | |
| CN205063849U (en) | Formula oil pipe tip screw thread protector is dismantled to non - spiral | |
| CN206318988U (en) | A kind of marsh-gas fermentation tank | |
| CN206026944U (en) | Kidney -yang simulated training storehouse cooling system | |
| CN207391174U (en) | Ultrasonic wave/ozone coupling advanced oxidation integration apparatus | |
| CN210905608U (en) | Industrial desulfurization is with taking sulphur residue processing apparatus | |
| CN106807691A (en) | Solder flux absorption plant | |
| CN204531417U (en) | A kind of formwork fastener being beneficial to heavy thickness concrete cover and controlling | |
| CN206112515U (en) | Device is changed on line to gas drainer downtake valve | |
| CN204054380U (en) | Screw mandrel protective cover | |
| CN208330394U (en) | A kind of novel segment supporting arrangement | |
| CN204892459U (en) | Protector is washed in hoist and mount of acid -base equipment |
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 |