CN201482476U - Waste acid expansion tank for methyl methacrylate device - Google Patents
Waste acid expansion tank for methyl methacrylate device Download PDFInfo
- Publication number
- CN201482476U CN201482476U CN200920092801XU CN200920092801U CN201482476U CN 201482476 U CN201482476 U CN 201482476U CN 200920092801X U CN200920092801X U CN 200920092801XU CN 200920092801 U CN200920092801 U CN 200920092801U CN 201482476 U CN201482476 U CN 201482476U
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- China
- Prior art keywords
- waste acid
- methyl methacrylate
- spent acid
- top cover
- expansion tank
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- Expired - Lifetime
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Abstract
The utility model discloses a waste acid expansion tank for a methyl methacrylate device, which is characterized in that a lead plate is arranged in a carbon steel shell in a lining way, and then a basalt casting stone plate is arranged in the carbon steel shell in a lining way; a cylinder body is connected with a top cover through a flange, the lower part of the cylinder body is provided with a lower feeding hole, the top cover is provided with an upper feeding hole and a waste acid gas exhaust hole, and waste acid gas is sent to a waste acid condenser of the waste acid expansion tank to be condensed to return to an esterification reaction unit by pipelines. The utility model has the advantages of better solving the problems of high-temperature waste acid water storage generated by the methyl methacrylate device, environment pollution by waste acid gas and soil and ground water pollution, ensuring long-period stable operation, and having simple structure, convenient construction, cost saving, low cost, long service life and remarkable social and economic benefits.
Description
Technical field
The utility model relates to a kind of methyl methacrylate device equipment.
Background technology
The production technology of world's methyl methacrylate mainly based on acetone cyanohydrin (ACH) method, accounts for worldwide production ability 83%.The acetone cyanohydrin method is through long-term constantly improvement and perfect, advanced technology, mature and reliable, good product quality, obtained extensive use, the characteristics of this technology are effectively to have utilized petrochemical industry accessory substance hydrogen cyanide, and methyl methacrylate yield height, it is the main technique route that present methyl methacrylate is produced, problem is that the production of methyl methacrylate needs a large amount of sulfuric acid, the a large amount of acid pickles of while by-product, need the auxiliary construction acid pickle to handle retracting device, because acid pickle has very severe corrosive, again because organic matter easily polymerizable wherein, the storage of spent acid and to carry be a great problem during the methyl methacrylate device is produced always.
Present domestic methylmethacrylate producing device, the acid pickle of generation adopts underground pond to store, and after asphalitine is pulled out, is delivered to downstream acid pickle retracting device with pump.Underground spent acid pond adopts acidproof method to have nothing in common with each other.Have and adopt acid-proof ceramic tile, have and adopt the cement lining with lead, also have the lining of the employing sodium silicate concrete.But total effect is all undesirable, and is opened type, and a large amount of spent acid gas directly enter atmosphere, cause environmental pollution; Also,, can not in time find, cause soil and phreatic pollution in case there is the seepage phenomenon to occur because these ponds are underground type.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of prior art, and a kind of new construction methyl methacrylate device spent acid surge tank is provided.
The technical solution of the utility model:
Consider the corrosivity that acid pickle is extremely strong, the storage tank material is considered from the economy of corrosion-resistant, intensity and manufacturing cost, is selected the way of lining with lead in the carbon steel+glass-ceramic basalt plate.
Because the acid pickle temperature is higher, a small amount of methyl methacrylate that contains in the gas phase, the time has been grown at the top cover place of jar and has formed polymer, needs periodic cleaning, and top cover is designed to flange connection.Top at lid adds hanger, with the cleaning of conveniently uncapping.
Feeding manner adopts tank deck and the charging simultaneously of jar end, guarantees that material is in flow regime, avoids forming the dead angle, prevents the formation of bulky polymer, has reduced pipeline blockage problem in the course of conveying.
Because the acid pickle temperature is higher, storage tank top volatilizes part spent acid gas, be provided with spent acid gas exhaust outlet at spent acid surge tank top, with pipeline this part spent acid pneumatic transmission is returned the esterification unit to methyl methacrylate device spent acid condenser condenses, solved the environment protection standard problem on the one hand, reduce the loss of methyl methacrylate product and raw material sulphuric acid on the other hand, improved product yield, reduced consumption of raw materials.
Methyl methacrylate device spent acid surge tank is characterized in that, carbon steel shell, liner stereotype serve as a contrast the glass-ceramic basalt plate again; Adopt flange to be connected between spent acid surge tank cylindrical shell and the top cover, in spent acid surge tank cylindrical shell bottom with cushion top ends of cans top and be respectively equipped with the spent acid charging aperture; On spent acid surge tank top cover, be provided with spent acid gas exhaust outlet.
The beneficial effect of above-mentioned four kinds of architecture advances, again the spent acid surge tank is placed ground, solved the storage problem of the high temperature waste acid water of methyl methacrylate device generation well, it is simple in structure, easy construction, cost saving, cost is low, long service life, guaranteed the ground stable operation of device long period, solved spent acid gas problem of environment pollution caused, also solved the problem to soil and underground water pollution, its economic and social benefit all is significant.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is made detailed description further.
The major parameter and the process conditions of spent acid surge tank are as follows:
Design pressure-500/2000PaG
150 ℃ of design temperatures
Working media 20% sulfuric acid, 4% organic matter, 52% ammonium hydrogen sulfate, 24% water
Spent acid basin structural representation as shown in Figure 1.
In the past, this class basin was to adopt the brick board liner structure mostly, existing also have adopt the spraying teflon coating as anticorrosive.If adopt the spraying teflon coating as anticorrosive, because the internal surface area of basin is big, whole equipment only sprays one will millions of units, unreasonable economically.And this spent acid basin needs deposit in the periodic cleaning jar, if adopt the spraying teflon coating just to be destroyed easily, need often carry out anticorrosion with painting and handle as anticorrosive, and also be uneconomic.So we think that it is most economical rational adopting the brick board liner structure.Because spent acid basin medium complexity, corrode very serious, so must adopt compound lining could satisfy requirement for anticorrosion.Promptly adopt brick board liner must increase separation layer and could guarantee safety.
Brick board liner material commonly used has acid-resistant porcelain, acid-resistant and heat-resistant ceramic wafer, various glass cermaic plate, impermeable graphite plate etc.According to the corrosion situation of medium and consider that economic rationality selects glass cermaic plate for use.
Cast stone is to be raw material with natural rock such as diabase, basalt etc. or industrial residue, add certain additives such as angle order rock, crystallizing agent such as dolomite, fluorite such as chromite, titanium magnesium ore deposit etc. are through a kind of nonmetal resistant material that dissolves, operation such as casting, crystallization, annealing processes.Cast stone is comparatively desirable substitute materials such as steel, iron, lead, rubber, timber on some positions of many equipment, has the inaccessible highly abrasion-resistant of common metal, the acid-alkali-corrosive-resisting performance, and has a prolongation equipment life cycle, reduce maintenance man-hours, enhance productivity, reduce advantages such as product cost.It is tight that cast stone has structure, and water absorption rate is little, compression strength height, the characteristics that wearability is good.
Black Warrior rock beam is a kind of of cast stone, and price is more cheap than glass-ceramic diabase, and corrosion resisting property is more much better than porcelain plate; Clay YJ furan mastic, its adhesive property and corrosion resisting property are all good.
Methyl methacrylate device spent acid surge tank is considered the corrosivity that acid pickle is extremely strong, and the storage tank material is considered from the economy of corrosion-resistant, intensity and manufacturing cost, selected the way of lining with lead in the carbon steel+glass-ceramic basalt plate.According to the sulfuric acid corrosion hodograph; antimonial lead is at dilute sulfuric acid that can anti-18%～30% below 108 ℃; and 125～140 ℃ of acid pickle operating temperatures that the methyl methacrylate device produces; consider again and contain polymethyl methacrylate in the acid pickle; polymethylacrylic acid; organic matters such as polyacrylamide; need regularly with the iron instrument cleaning tank body and jar ends such as spades; so hardness requirement during for the corrosion-resistant temperature that guarantees antimonial lead and cleaning tank body; (every layer of glass-ceramic basalt plate thickness is 20mm to add two-layer glass-ceramic basalt plate on the surface of lead layer (stereotype thickness is 6mm); the fissure of displacement is pasted); stick on the lead layer outer surface with acid resistant adhesive mortar (acid resistant adhesive mortar of selection is extraordinary YJ furan mastic) that can anti-180 ℃ of high temperature; can guarantee that so directly contact is plumbous not surperficial under the spent acid normal condition; in case guaranteed that again the glass-ceramic basalt plate has small leakage simultaneously; can play a protective role by stereotype, and corrosion is less than the carbon steel part of tank body.
Claims (2)
1. a methyl methacrylate device spent acid surge tank is characterized in that, carbon steel shell (7), liner stereotype (8) serve as a contrast glass-ceramic basalt plate (9) again; Cylindrical shell (2) bottom and top cover (5) top are established charging aperture under a group (10) and last charging aperture (3) respectively; On spent acid surge tank top cover (5), be provided with spent acid gas exhaust outlet (4).
2. according to the described methyl methacrylate device spent acid surge tank of claim 1, it is characterized in that, between spent acid surge tank cylindrical shell (2) and the top cover (5), adopt flange (6) to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920092801XU CN201482476U (en) | 2009-01-01 | 2009-01-01 | Waste acid expansion tank for methyl methacrylate device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920092801XU CN201482476U (en) | 2009-01-01 | 2009-01-01 | Waste acid expansion tank for methyl methacrylate device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201482476U true CN201482476U (en) | 2010-05-26 |
Family
ID=42421369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920092801XU Expired - Lifetime CN201482476U (en) | 2009-01-01 | 2009-01-01 | Waste acid expansion tank for methyl methacrylate device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201482476U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105056558A (en) * | 2015-08-07 | 2015-11-18 | 无锡市悦丰化工有限公司 | Methyl methacrylate recovery tank |
| CN113461520A (en) * | 2020-03-30 | 2021-10-01 | 中石油吉林化工工程有限公司 | Acid water mechanism for MMA production device |
-
2009
- 2009-01-01 CN CN200920092801XU patent/CN201482476U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105056558A (en) * | 2015-08-07 | 2015-11-18 | 无锡市悦丰化工有限公司 | Methyl methacrylate recovery tank |
| CN113461520A (en) * | 2020-03-30 | 2021-10-01 | 中石油吉林化工工程有限公司 | Acid water mechanism for MMA production device |
| CN113461520B (en) * | 2020-03-30 | 2023-10-17 | 中石油吉林化工工程有限公司 | Acid water mechanism for MMA production device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Changyi District of Jilin city in Jilin province 132002 Tong Tan Road Jihua Trade Center building A Patentee after: Jilin Design Institute of Northeast Refining & Chemical Engineering Co., Ltd., CNPC Address before: Changyi District of Jilin city of Jilin Province on the 132022 road at the eastern end of Lake Jilin Trade Building Patentee before: Jilin Institute of Design, PetroChina Northeast Refining & Chemicals Engineering Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100526 |