CN203212505U - Acrylic acid washing device in production of acrylic acid - Google Patents
Acrylic acid washing device in production of acrylic acid Download PDFInfo
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- CN203212505U CN203212505U CN 201320160718 CN201320160718U CN203212505U CN 203212505 U CN203212505 U CN 203212505U CN 201320160718 CN201320160718 CN 201320160718 CN 201320160718 U CN201320160718 U CN 201320160718U CN 203212505 U CN203212505 U CN 203212505U
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- acrylic acid
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- gas
- quench tower
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Abstract
The utility model relates to a petrochemical device and provides an acrylic acid washing device in the production of acrylic acid. The acrylic acid washing device is characterized in that a spraying head of a circulating reflowing liquid is arranged at the top of a cooling pot V-101; a circulating pump is arranged at the lower part of the cooling pot; a cooler is arranged at an outlet of the circulating pump; the cooler is cooled by using circulating water; materials in the cooling pot are sprayed, cooled and absorbed by the circulating cooling liquid; one part of cooled and absorbed high-concentration rough acrylic acid liquid is circulated again; and the other part of the high-concentration rough acrylic acid liquid is conveyed into a refining procedure. The acrylic acid washing device disclosed by the utility model has the advantages that the cooling pot is adopted so as to reduce the polymerization of the acrylic acid, guarantee the safety of the device, reduce the loss of the acrylic acid and improve the yield of a product; the use amount of desalted water at the tower top of a quench tower is reduced and the discharging amount of sewage is also reduced; and a low-concentration rough acrylic acid solution is produced at the tower bottom of the quench tower. The high-concentration acrylic acid can reduce the operation load and the energy consumption of a subsequent acrylic acid refining unit, and the operation cost is reduced.
Description
Technical field
The utility model relates to a kind of petrochemical unit, more particularly, and the acrylic acid modifying device of a kind of propane single stage method system.
Background technology
The conventional acrylic acid device of propane single stage method system, acrylic acid washing that reaction generates, absorption are crucial.Adopt washing principle, for certain gas solute, Henry'S coefficient varies with temperature and changes, the temperature Henry'S coefficient that raises then increases, and Gas Solubility raises with temperature and diminishes, therefore, the temperature of the feed gas of reduction washing tower and the temperature of washing tower are the keys of dealing with problems.The conventional acrylic acid technology of propane single stage method system, propane, oxygen and circulation gas are fed among the reactor R-101, carry out chemical reaction, the outlet of reactor contains propane, carbon monoxide, carbonic acid gas, vinylformic acid reactant gases product, 275 ℃ of temperature outs, polymerization at high temperature very easily takes place in the vinylformic acid that generates, and occluding device and pipeline bring potential safety hazard to production.For reducing the temperature of resultant of reaction, adopt water cooler E-101, pass through feedwater, cool off, water cooler E-101 produces low-pressure steam, reclaims heat, the temperature of resultant of reaction can be down to 70 ℃, cooled gas enters quench tower T-101, in quench tower T-101 tower with cat head washing water counter current contact, with absorbing propenoic acid.
The problem that exists is, the one, and water consumption is big, and reactant gases needs all coolings, needs a large amount of de-salted water countercurrent washings in scrubber overhead, consumes a large amount of de-salted waters, simultaneously, also increases quantity of wastewater effluent.The 2nd, to invest manyly, quench tower belongs to the absorption tower, and inside arranges the multilayer random packing.Absorb a large amount of reaction gases, need bigger tower diameter and packed height, the equipment one-time investment that needs is bigger.The 3rd, the energy consumption height, crude acrylic acid concentration only is 20% at the bottom of the chilling Tata, needs follow-up refining system heavy-duty service, needs to consume the more thermal energy consumption and makes with extra care.
At above problem, be badly in need of a kind of reaction gas cooling infrastructure of better economy, should solve the aggregation problem of reaction gas, can guarantee the washing effect of washing tower again.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of conventional apparatus technology, provides a kind of propane single stage method system acrylic acid modifying device.
Vinylformic acid washing device during a kind of vinylformic acid is produced, comprise reactor R-101, the first water cooler E-101, recycle compressor K-101, it is characterized in that, be provided with cooling tank V-101, reacted mixed gas is through the first water cooler E-101, adopt feedwater to cool off, produce low-pressure steam, cooled reactant gases enters cooling tank V-101; Cooling tank V-101 top is provided with the spray header that loops back flow liquid; Cooling tank V-101 bottom is provided with the first recycle pump P-101, first recycle pump P-101 outlet is provided with the second water cooler E-102, the second water cooler E-102 adopts the recirculated water cooling, material in the cooling tank V-101 jar, through circulating cooling liquid spray cooling and absorbing, the part of the high density crude propylene acid solution of cooling and absorbing is carried out recirculation, and another part high density crude propylene acid solution is sent into refining step; The uncooled gas that cooling tank V-101 comes out at the top enters quench tower T-101, the top de-salted water counter current contact of the gas in quench tower T-101 and tower absorbs, tower bottoms concentration after absorbing is lower, and the crude propylene acid solution is sent into refining step, and quench tower T-101 is packing tower; Quench tower T-101 overhead gas, contain a large amount of unreacted propane and rare gas element, wherein major part is pressurizeed through recycle compressor K-101, carry out recirculation, get back to reactor R-101 entrance, continue reaction, improve per-pass conversion, another part gas behind propane recovery system recoveries propane, discharges to burned waste gas; Be provided with the second recycle pump P-102 at the bottom of the quench tower T-101 tower, second recycle pump P-102 outlet is provided with the 3rd water cooler E-103, material at the bottom of the quench tower T-101 tower, through the second recycle pump P-102, wherein a part is sent quench tower T-101, circulate, the crude acrylic acid of another part lower concentration is sent into refining step again.
Advantage of the present utility model adopts cooling tank, and spray cools off in jar, has reduced the temperature of quench tower feed gas effectively, reduces polymerizing acrylic acid, has guaranteed the safety of device; Guarantee the washing effect of quench tower, reduced acrylic acid loss, improved the yield of product; Adopt the cooling of vertical cooling tank spray, reduced the one-time investment of device; Adopt the spray cooling infrastructure in jar, reduced the usage quantity of quench tower cat head de-salted water, simultaneously, also reduced quantity of wastewater effluent; Adopt self-circulation spray Technology, at the bottom of the cooling tank jar, produce the crude acrylic acid solution of high density, and unabsorbed gas enters the quench tower bottom by the absorption of cat head de-salted water counter current contact, produces the crude acrylic acid solution of lower concentration at the bottom of the chilling Tata.The crude acrylic acid of high density can reduce operational load and the energy consumption of follow-up vinylformic acid refined unit, reduces running cost.
Description of drawings
Fig. 1 is simplified flow chart of the present utility model.
Device R-101, quench tower T-101, cooling tank V-101, the first water cooler E-101, the second water cooler E-102, the 3rd water cooler E-103, recycle compressor K-101, the first recycle pump P-101, the second recycle pump P-102 respond among the figure.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is made detailed description further.
5000 tons of/year acroleic acid devices of certain enterprise, after the improvement, as shown in Figure 1, propane, oxygen and circulation gas enter reactor R-101 and carry out chemical reaction, reacted mixed gas advances the first water cooler E-101, adopt feedwater to cool off, produce low-pressure steam, cooled gas enters cooling tank V-101; Cooling tank V-101 top is provided with the spray header that loops back flow liquid; Cooling tank V-101 bottom is provided with the first recycle pump P-101, first recycle pump P-101 outlet is provided with the second water cooler E-102, the second water cooler E-102 adopts the recirculated water cooling, material in the cooling tank V-101 jar, through circulating cooling liquid spray cooling and absorbing, the wherein part of the high density crude propylene acid solution of cooling and absorbing is carried out recirculation, and another part high density crude propylene acid solution is sent into refining step; The uncooled gas that cooling tank V-101 comes out at the top enters quench tower T-101, and the top de-salted water counter current contact of the gas in quench tower T-101 and tower absorbs, and the tower bottoms concentration after absorbing is lower, sends into the crude acrylic acid refining step; Quench tower T-101 overhead gas, contain a large amount of unreacted propane and rare gas element, wherein major part is pressurizeed through recycle compressor K-101, carry out recirculation, get back to reactor R-101 entrance, continue reaction, improve per-pass conversion, another part gas behind propane recovery system recoveries propane, discharges to burned waste gas; Quench tower T-101 tower bottom establishes second recycle pump P-102, second recycle pump P-102 outlet is provided with the 3rd water cooler E-103, material at the bottom of the quench tower T-101 tower is through the second recycle pump P-102, wherein a part of, go quench tower T-101 to carry out recirculation, the crude acrylic acid of another part lower concentration is sent into the crude acrylic acid refining step.
Claims (1)
1. the vinylformic acid washing device during a vinylformic acid is produced, comprise reactor device (R-101), water cooler (E-101), recycle compressor (K-101), it is characterized in that, be provided with cooling tank (V-101), reacted mixed gas is through first water cooler (E-101), adopt feedwater to cool off, produce low-pressure steam, cooled gas enters cooling tank (V-101); Cooling tank (V-101) top is provided with the spray header that loops back flow liquid; Cooling tank (V-101) bottom is provided with first recycle pump (P-101), first recycle pump (P-101) outlet is provided with second water cooler (E-102), second water cooler (E-102) adopts the recirculated water cooling, cooling tank (V-101) jar interior material, through circulating cooling liquid spray cooling and absorbing, the part of the high density crude propylene acid solution of cooling and absorbing is carried out recirculation, and another part high density crude propylene acid solution is sent into refining step; The uncooled gas that comes out in cooling tank (V-101) top enters quench tower (T-101), the top de-salted water counter current contact of the gas in quench tower (T-101) and tower absorbs, tower bottoms concentration after absorbing is lower, the crude propylene acid solution is sent into refining step, and quench tower (T-101) is packing tower; Quench tower (T-101) overhead gas, contain a large amount of unreacted propane and rare gas element, wherein major part is pressurizeed through recycle compressor (K-101), carry out recirculation, get back to reactor (R-101) entrance, continue reaction, improve per-pass conversion, another part gas behind propane recovery system recoveries propane, discharges to burned waste gas; Be provided with second recycle pump (P-102) at the bottom of quench tower (T-101) tower, second recycle pump (P-102) outlet is provided with the 3rd water cooler (E-103), material at the bottom of quench tower (T-101) tower, through second recycle pump (P-102), wherein a part is sent quench tower (T-101), circulate, the crude acrylic acid of another part lower concentration is sent into refining step again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320160718 CN203212505U (en) | 2013-03-20 | 2013-03-20 | Acrylic acid washing device in production of acrylic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320160718 CN203212505U (en) | 2013-03-20 | 2013-03-20 | Acrylic acid washing device in production of acrylic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203212505U true CN203212505U (en) | 2013-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320160718 Expired - Lifetime CN203212505U (en) | 2013-03-20 | 2013-03-20 | Acrylic acid washing device in production of acrylic acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203212505U (en) |
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2013
- 2013-03-20 CN CN 201320160718 patent/CN203212505U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200929 Address after: 132002 3-6 and 9-13 floors of Block A, Jihua Economic and Trade Center, Tongtan Road, Changyi District, Jilin Province Patentee after: PetroChina Jilin Chemical Engineering Co.,Ltd. Address before: Changyi District of Jilin city in Jilin province 132001 Tong Tan Road Jihua Trade Center building A Patentee before: JILIN DESIGNING INSTITUTE OF CNPC NORTHEAST REFINING & CHEMICAL ENGINEERING Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130925 |
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| CX01 | Expiry of patent term |