CN204865781U - Top anticorrosion structure in large -scale phosphoric acid reaction - Google Patents
Top anticorrosion structure in large -scale phosphoric acid reaction Download PDFInfo
- Publication number
- CN204865781U CN204865781U CN201520442050.5U CN201520442050U CN204865781U CN 204865781 U CN204865781 U CN 204865781U CN 201520442050 U CN201520442050 U CN 201520442050U CN 204865781 U CN204865781 U CN 204865781U
- Authority
- CN
- China
- Prior art keywords
- layer
- phosphoric acid
- cell body
- acid
- buckle
- 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.)
- Expired - Fee Related
Links
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Abstract
The utility model discloses a top anticorrosion structure in large -scale phosphoric acid reaction, this reaction include the cell body, and the top surface of cell body is to interior in proper order for concrete -based body layer, conducting layer, barrier layer, buckle layer and acidproof clay layer outside from, to pass through fossil fragments and barrier layer fixed on the buckle layer. This equipment is owing to adopt above -mentioned structure, and antiseptic effect is good, and mixed acid such as the resistant concentrated sulfuric acid, fluosilicic acid, phosphoric acid corrode strongly, and the safety ring guarantor, bring considerable economic benefits and social for the enterprise.
Description
Technical field
The utility model belongs to big-and-middle-sized phosphorous chemical industry equipment anticorrosion engineering field, relates to phosphoric acid production equipment, is specially a kind of phosphoric acid reaction tank inner top anticorrosion structure.
Background technology
During phosphoric acid reaction tank and Phosphoric Acid Concentration negative pressure equipment use aborning, the antiseptic effect of anticorrosive coat is poor, particularly equipment inner top very easily occurs being corroded the situation that even anticorrosive coat offset plate comes off, the concrete foundation large area of reactive tank inner top can be corroded time serious, produce to phosphorous chemical industry enterprise and bring serious safety hazards.Concrete substrate after being corroded once lose the device damage that intensity can cause groove top, the life security of entail dangers to producers time more serious.Inestimable loss is brought to enterprise.
Summary of the invention
The purpose of this utility model is for above problem, provides a kind of big-and-middle-sized sulphur dioxide of phosphor chemical industry equipment, relates to phosphoric acid reaction tank inner top anticorrosion structure, its favorable anti-corrosion effect, safety and environmental protection, bring safe and considerable economic benefit and social benefit to enterprise.
For solving the problems of the technologies described above, the technical matters that the utility model adopts is: a kind of large-scale phosphoric acid reaction tank inner top anticorrosion structure, comprise cell body, the end face of cell body is followed successively by concrete substrate layer, conductive layer, impervious barrier, buckle layer and acid resistant adhesive mortar layer from outside to inside, and described buckle layer is fixed by keel and impervious barrier.
Described conductive layer is applied to the dry rear coating formed on concrete substrate layer after adopting the mixing of epoxy mortar, conducting powder and graphite powder.
Described impervious barrier is acidproof offset plate, and its material is presulfurization butyl rubber; Have the corrosion of tolerate P-levels acid+hydrofluoric acid, adhesive strength is good, and expansion character is good, can meet concrete expansion requirements, the advantages such as seepage capability is good.
Conductive layer is that conductive layer thickness is 2mm-3mm for after impervious barrier construction, whether the acidproof offset plate of inspection has leak source, to meet the rear detectability detecting leak source of acidproof offset plate construction, detection method electricity consumption Spark plug optical fiber sensor instrument.According to the every 1mm of offset plate thickness by being not less than 3kv voltage detecting, not produce spark and to report to the police as qualified, design of impervious layer is two-layer 2-3mm pre-vulcanized butyl rubber plate, detects according to the method described above after every layer of offset plate construction to offset plate.
Described keel adopt that 316L is stainless steel welded to be formed, and buckle layer and keel carry out integrated ceiling; After furred ceiling completes, the weight capacity of the buckle layer of every square meter is not less than 200kg.
Described buckle layer is the plate body adopting epoxy resin and furane resins to coordinate the rear roller-compaction of inserts mixing.Sheet material specification can be 70mm*150mm*15mm.
Described acid resistant adhesive mortar layer adopts epoxy resin and furane resins to coordinate and forms.By coordinating, improve the shortcoming of epoxy resin non-refractory, improve the toughness of furane resins, single epoxy resin is the highest can resistance to temperature 80 degree, single furan resin mortar poor toughness, easy aging cracking bonding force are poor, avoided the shortcoming of above two kinds of resins by the modification of two kinds of resins, enhance high temperature resistant, multiple acid and intersect corrosion, the toughness of Zeng Qiang clay and bonding force.
Former designing institute design phosphoric acid reaction tank inner top anticorrosion process is: inner top serves as a contrast two-layer butyl offset plate, reactive tank anticorrosive coat decided at the higher level but not officially announced is found when national Ge great phosphoric acid enterprise is visited through utility model people, at driving parking maintenance after a year, all can there is the situation of heavy corrosion in the reactive tank of 80%.
Its main cause is:
1, reactive tank is in process of production, use that medium is phosphoric acid in groove, sulfuric acid, hydrofluoric acid, high temperature gentle to etc. in visible groove environment for use quite severe.
2, the reason causing equipment top anticorrosive coat to come off is: the reactor of equipment occurs that anticorrosive coat offset plate bubbles and large-arealy to come off at first in process of production, because have several concentrated sulfuric acid entrance in reaction zone groove, when the concentrated sulfuric acid in a flash that the concentrated sulfuric acid enters groove to enter in groove sometimes flow rapidly time there will be the concentrated sulfuric acid and can evoke certain bounce-back, backwash comes the concentrated sulfuric acid once be splashed on anticorrosive coat offset plate, and offset plate is not concentrated sulfuric acid resistant.At this moment offset plate will by heavy corrosion, bubbled before this, offset plate constantly corrodes through the concentrated sulfuric acid, it is the same that offset plate will become phase sponge, there is micropore one by one, as blowing agent, the anticorrosion impervious effect that offset plate at this time just loses it is used, then groove and phosphoric acid is being entered through the concentrated sulfuric acid, the high temperature produced during hydrofluoric acid mixing and the gas phase of rising, especially the penetrating power of hydrofluoric acid is extremely strong, will constantly enter the anticorrosive coat be corroded, a large amount of corrosion is carried out to the concrete at top, can constantly expand after offset plate bubbles, gas in bubble slowly can become mix acid liquor, simultaneously to the bonding agent corrosion failure of offset plate, anticorrosive coat loses cementability, just there will be sinking, along with bubble slowly becomes large one by one, a large amount of phosphogypsum crystal bodies of adding on groove top are attached on anticorrosive coat, strengthen heavier sink pressure to the anticorrosive coat natively losing bonding force, at this moment just there will be offset plate cracking to come off, now will corrode not having the concrete of anticorrosive coat.
Furred ceiling scheme is adopted to occur above problem in the utility model.
The phosphoric acid reaction tank that the utility model provides obtained good economic benefit at Large-scale Phosphorus chemical enterprise in recent years, and the every year bad serious consequence of the year annual overhaul avoided is by good in following Large-scale Phosphorus chemical enterprise result of use.
The equipment that the utility model provides and anticorrosion process, add the intensity of equipment acid corrosion-resistant, extend the service life of anticorrosive coat, former design side by service life be generally 1 year, and adopt equipment of the present utility model and anticorrosion, can reduce because maintenance shut-downs brings input economically to enterprise during this period, the time enterprise simultaneously for overhauling can continue production and bring considerable economic benefit to enterprise again more than 5 years service life.
Accompanying drawing explanation
Fig. 1 is the top profile schematic diagram of the phosphoric acid reaction tank that the utility model provides.
Detailed description of the invention
Further illustrate the utility model below in conjunction with embodiment, but the claimed scope of the utility model is not limited to the scope of embodiment statement.
As shown in Figure 1, a kind of large-scale phosphoric acid reaction tank inner top anticorrosion structure, comprise cell body, the end face of cell body is followed successively by concrete substrate layer 1, conductive layer 2, impervious barrier 3, buckle layer 4 and acid resistant adhesive mortar layer 5 from outside to inside, and described buckle layer 4 is fixed by keel 6 and impervious barrier 3.
Further, described conductive layer 2 is applied to the dry rear coating formed on concrete substrate layer 1 after adopting the mixing of epoxy mortar, conducting powder and graphite powder, and thickness is 2-3mm.
Further, described impervious barrier 3 is acidproof offset plate, and its material is presulfurization butyl rubber, and thickness is 4-6mm.
Further, described keel 6 adopt that 316L is stainless steel welded to be formed, and buckle layer 4 and keel 6 carry out integrated ceiling.
Further, described buckle layer 4 is the plate bodys adopting epoxy resin and furane resins to coordinate the rear roller-compaction of inserts mixing.
Further, described acid resistant adhesive mortar layer 5 adopts epoxy resin and furane resins cooperation to form.
The anticorrosion process of described large-scale phosphoric acid reaction tank inner top anticorrosion structure, concrete steps are:
1) according to shape and the size installation form of cell body, in template, carry out concreting, after concrete curing and after form removal, full water test test is carried out to concrete cell body, find that the timely epoxy resin daub that leaks is levelling;
2) form paste after epoxy mortar, conducting powder and graphite powder being mixed, be then brushed to cell body inside top and form conductive layer;
3) after conductive layer solidification, carry out abrasive machine polishing to the smooth position of cell body inside, the acidproof offset plate as impervious barrier also carries out two-sidedly making hair, more acidproof offset plate and conductive layer is installed to fix with bonding agent and form impervious barrier;
4) keel and buckle layer are installed on impervious barrier, by keel and buckle layer, integrated ceiling are carried out to cell body inner top;
5) in acid resistant adhesive mortar, add curing agent, be then brushed on buckle layer, after acid resistant adhesive mortar solidification, form acid resistant adhesive mortar layer;
By aforesaid operations, obtain the large-scale phosphoric acid reaction tank with efficient corrosion resisting effect.
Claims (3)
1. one kind large-scale phosphoric acid reaction tank inner top anticorrosion structure, comprise cell body, it is characterized in that: the end face of cell body is followed successively by concrete substrate layer (1), conductive layer (2), impervious barrier (3), buckle layer (4) and acid resistant adhesive mortar layer (5) from outside to inside, described buckle layer (4) is fixed by keel (6) and impervious barrier (3).
2. structure according to claim 1, is characterized in that: described impervious barrier (3) is acidproof offset plate, and its material is presulfurization butyl rubber, and thickness is 4-6mm.
3. structure according to claim 1, is characterized in that: described keel (6) adopt that 316L is stainless steel welded to be formed, and buckle layer (4) and keel (6) carry out integrated ceiling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520442050.5U CN204865781U (en) | 2015-06-25 | 2015-06-25 | Top anticorrosion structure in large -scale phosphoric acid reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520442050.5U CN204865781U (en) | 2015-06-25 | 2015-06-25 | Top anticorrosion structure in large -scale phosphoric acid reaction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204865781U true CN204865781U (en) | 2015-12-16 |
Family
ID=54810216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520442050.5U Expired - Fee Related CN204865781U (en) | 2015-06-25 | 2015-06-25 | Top anticorrosion structure in large -scale phosphoric acid reaction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204865781U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104907028A (en) * | 2015-06-25 | 2015-09-16 | 湖北中孚化工集团有限公司 | Top antiseptic structure in large phosphoric acid reaction tank and antiseptic technology thereof |
-
2015
- 2015-06-25 CN CN201520442050.5U patent/CN204865781U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104907028A (en) * | 2015-06-25 | 2015-09-16 | 湖北中孚化工集团有限公司 | Top antiseptic structure in large phosphoric acid reaction tank and antiseptic technology thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205853471U (en) | A kind of SBS modified asphalt waterproof coiled material | |
| CN204865781U (en) | Top anticorrosion structure in large -scale phosphoric acid reaction | |
| CN107285701B (en) | A kind of building iron antirusting paint and its construction method | |
| CN102288539A (en) | Cement concrete anti-thaumasite form of sulfate attack (TSA) erosion acceleration test device and method | |
| CN103965746B (en) | A kind of acidproof interfacial agents of the high temperature for inner wall of stack | |
| CN206298350U (en) | A kind of arch anti-corrosion potassium acid sulfate conversion reaction groove | |
| CN104655459A (en) | Experimental method for combined effect of fatigue, carbonization and chlorides on reinforced concrete | |
| CN101580672A (en) | Special high-performance spray polyurethane elastic waterproof anti-corrosive paint and preparation method thereof | |
| CN201014150Y (en) | Corrosion-resistant acid pump basic | |
| CN202370171U (en) | Steel pipe concrete column filled with marine sand concrete | |
| CN101839024A (en) | Electric field salt rejection protective system protected by reinforced concrete structure in chloride environment | |
| CN205688014U (en) | In a kind of armored concrete, chloride ion detaches anti-corrosive apparatus | |
| CN109267102A (en) | Composite construction electrolytic cell and electrolyzer assembly | |
| CN104907028A (en) | Top antiseptic structure in large phosphoric acid reaction tank and antiseptic technology thereof | |
| CN208649478U (en) | Composite construction electrolytic cell and electrolyzer assembly | |
| CN112777972B (en) | Seawater sea sand concrete grading design method | |
| CN104591569B (en) | A kind of synthetic method of red mud base geological polymer | |
| CN201588226U (en) | Anti-corrosion structure of bottom of metal storage tank for acid and alkali media | |
| CN204456044U (en) | Mixing floating offshore booster station structure | |
| CN102199014A (en) | Composite steel bar corrosion inhibitor | |
| CN201880467U (en) | Erosion resistant coating structure of desulfuration absorption tower bottom plate | |
| CN102322042A (en) | Rockfill concrete dam | |
| CN217549777U (en) | Phosphoric acid reaction tank top corrosion protection device | |
| CN206358679U (en) | A kind of low pressure vessel leak stopping structure | |
| CN104829156A (en) | Formula and preparation method of impermeable waterproof concrete repairing agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20190625 |