CN210786817U - Device for recovering effective components of rectification residues and comprehensively treating waste gas in polyvinyl alcohol production process - Google Patents
Device for recovering effective components of rectification residues and comprehensively treating waste gas in polyvinyl alcohol production process Download PDFInfo
- Publication number
- CN210786817U CN210786817U CN201921508670.9U CN201921508670U CN210786817U CN 210786817 U CN210786817 U CN 210786817U CN 201921508670 U CN201921508670 U CN 201921508670U CN 210786817 U CN210786817 U CN 210786817U
- Authority
- CN
- China
- Prior art keywords
- outlet
- inlet
- residue
- alkali liquor
- pump
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000004372 Polyvinyl alcohol Substances 0.000 title claims abstract description 19
- 229920002451 polyvinyl alcohol Polymers 0.000 title claims abstract description 19
- 239000002912 waste gas Substances 0.000 title claims abstract description 15
- 239000003513 alkali Substances 0.000 claims abstract description 109
- 239000007789 gas Substances 0.000 claims abstract description 59
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims abstract description 16
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims abstract description 16
- 238000004821 distillation Methods 0.000 claims abstract description 13
- 238000011084 recovery Methods 0.000 claims abstract description 11
- 239000004480 active ingredient Substances 0.000 claims abstract description 5
- 238000005406 washing Methods 0.000 claims description 40
- 238000000034 method Methods 0.000 claims description 18
- 239000012071 phase Substances 0.000 claims description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 239000013589 supplement Substances 0.000 claims description 11
- 239000007791 liquid phase Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 239000002351 wastewater Substances 0.000 claims description 5
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 6
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000003786 synthesis reaction Methods 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 3
- 239000003344 environmental pollutant Substances 0.000 abstract description 2
- 231100000719 pollutant Toxicity 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000005201 scrubbing Methods 0.000 abstract 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 48
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 239000000243 solution Substances 0.000 description 5
- 230000002378 acidificating effect Effects 0.000 description 4
- 239000012670 alkaline solution Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- AZQWKYJCGOJGHM-UHFFFAOYSA-N 1,4-benzoquinone Chemical compound O=C1C=CC(=O)C=C1 AZQWKYJCGOJGHM-UHFFFAOYSA-N 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000001577 simple distillation Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- DJHGAFSJWGLOIV-UHFFFAOYSA-N Arsenic acid Chemical compound O[As](O)(O)=O DJHGAFSJWGLOIV-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- RBFQJDQYXXHULB-UHFFFAOYSA-N arsane Chemical compound [AsH3] RBFQJDQYXXHULB-UHFFFAOYSA-N 0.000 description 1
- 229940000488 arsenic acid Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
Images
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model discloses a recovery of rectification residue active ingredient and exhaust gas integrated processing's device in polyvinyl alcohol production process, the device include residue jar, U type pipe, condenser, vacuum unit, distillation tank, distillate delivery pump, residue pond, alkali wash tower, alkali lye circulating pump, draught fan, acetylene gas scrubbing tower and alkali lye supplyes the pump. The device of the utility model can realize effective utilization of residue components and comprehensive treatment of waste gas, improve the utilization rate of raw materials and reduce the production cost; meanwhile, the recycling of the waste alkali liquor generated in the synthesis section is realized, and the discharge amount of pollutants is reduced.
Description
Technical Field
The utility model relates to a device for recovering effective components of rectification residues and comprehensively treating waste gas in the production process of polyvinyl alcohol.
Background
Polyvinyl alcohol is an important chemical raw material, can be used for the production of fiber processing, textile sizing agent, adhesive, building coating, emulsion stabilizer and dispersant, can also be used for the manufacture of products such as acetal derivatives, degradable films, protective colloids, optical films and the like, and has wide application in the industries such as textile, food, medicine, building, agriculture and the like.
China is the largest polyvinyl alcohol producing country in the world, and the yield of polyvinyl alcohol in China is 78.74 ten thousand tons in 2017. The rectification residue in the production process of polyvinyl alcohol mainly comes from the refining link of vinyl acetate, and about 7 kg of residue is generated when one ton of polyvinyl alcohol is produced. At present, the main treatment mode of the residues in the polyvinyl alcohol industry is to carry out simple distillation on the residues, send the residues into a reactor for temporary storage and then send the residues to qualified hazardous waste treatment units for treatment. After simple distillation, 80% of acetic acid in the residue can be recovered at most, and the rest acetic acid is continuously volatilized in the processes of temporary storage and transportation, so that certain adverse effects are caused to the production environment. Meanwhile, in the synthesis stage of polyvinyl alcohol, acetylene gas is washed by a sodium hypochlorite solution in an acetylene gas washing tower, impurities such as hydrogen sulfide, phosphine, arsine and the like in the acetylene gas are oxidized to generate acidic substances such as sulfuric acid, phosphoric acid, arsenic acid and the like, the acidic substances are entrained in the acetylene gas in an acid mist form, and the acidic substances and the acidic gas contained in the acetylene gas are subjected to acid-base neutralization reaction by adding a sodium hydroxide alkali solution to generate soluble salt. Soluble salt and unreacted sodium hydroxide solution are discharged together, and the method causes certain waste to the sodium hydroxide solution. The two treatment methods are not in line with the requirements of modern green development, and in order to change the current situation, the research on the recovery of the effective components of the rectification residues and the comprehensive treatment method of the waste gas in the production process of the polyvinyl alcohol has great significance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a device of rectification residue active ingredient's recovery and waste gas integrated processing in polyvinyl alcohol production process, aim at utilizing the high-efficient active ingredient acetic acid of retrieving in the rectification residue of method of vacuum distillation and utilize waste lye to realize waste gas integrated processing, not only realize the high-efficient recovery of acetic acid in the residue, the waste lye that makes the synthetic stage of production polyvinyl alcohol to produce moreover obtains high-efficient utilization, when reducing enterprise manufacturing cost, tail gas also obtains pollution-free green emission.
The utility model provides a technical problem adopts following technical scheme:
the utility model provides a recovery of rectification residue active ingredient and exhaust gas integrated processing's device in polyvinyl alcohol production process, its structural feature lies in: comprises a residue tank, a U-shaped pipe, a condenser, a vacuum unit, a distillation tank, a distillate delivery pump, a residue tank, an alkaline washing tower, an alkaline circulating pump, an induced draft fan, an acetylene gas washing tower and an alkaline solution supplement pump.
A jacket for introducing steam is arranged outside the residue tank, and a residue inlet, a residue material outlet and a residue tank gas phase outlet are arranged on the residue tank; a residue tank jacket steam inlet and a residue tank jacket steam outlet are formed in the jacket;
the U-shaped pipe is arranged at the middle lower part of the residue tank and comprises a U-shaped pipe steam inlet and a U-shaped pipe steam outlet;
the condenser is provided with a condenser gas phase inlet, a condenser liquid phase outlet and an air suction opening;
the vacuum unit is provided with an air inlet, a process water outlet and an air outlet;
a condensate inlet and a condensate outlet are arranged on the distillation tank;
a feed inlet of a delivery pump and a discharge outlet of the delivery pump are arranged on the distillate delivery pump;
a residue inlet of the residue tank, a residue delivery outlet and a residue tank tail gas outlet are arranged on the residue tank;
the alkaline washing tower is provided with a residue pool tail gas inlet, an alkaline solution replenishing port, an alkaline washing tower alkaline solution outlet, an alkaline washing tower process water replenishing port and an alkaline washing tower tail gas outlet;
an alkali liquor inlet, an alkali liquor outlet of the alkali liquor circulating pump and an inlet valve for conveying alkali liquor to the wastewater tank are arranged on the alkali liquor circulating pump;
an induced draft fan inlet and an induced draft fan outlet are arranged on the induced draft fan;
the acetylene gas washing tower is provided with a washing tower feeding source port, an alkali liquor circulating inlet port and a tower kettle alkali liquor delivery port;
an alkali liquor pump inlet, an alkali liquor pump outlet and a qualified alkali liquor replenishing port are arranged on the alkali liquor replenishing pump;
a residue material outlet and a residue tank gas-phase outlet of the residue tank are respectively connected with a residue tank residue inlet of the residue tank and a condenser gas-phase inlet of the condenser;
a condenser liquid phase outlet and an air suction opening of the condenser are respectively connected with a condensate inlet of the distillation tank and an air inlet of the vacuum unit;
a condensate outlet of the distillation tank is connected with a feed inlet of a distillate delivery pump;
a tail gas outlet of the residue tank is connected with a tail gas inlet of the residue tank of the alkaline washing tower;
an alkali liquor outlet and an alkali liquor inlet of the alkali wash tower are respectively connected with an alkali liquor inlet of an alkali liquor circulating pump and an alkali liquor outlet of the alkali liquor circulating pump; an outlet of the alkaline washing tower tail gas of the alkaline washing tower is connected with an inlet of an induced draft fan of the induced draft fan;
the tower bottom alkali liquor delivery outlet and the alkali liquor circulating inlet of the acetylene gas washing tower are respectively connected with an alkali liquor pump inlet and an alkali liquor pump outlet of an alkali liquor supplement pump;
an alkali liquor pump outlet of the alkali liquor supplement pump is connected with an alkali liquor supplement port of the alkali wash tower;
compared with the prior art, the beneficial effects of the utility model are embodied in:
1. the device of the utility model improves the utilization rate of raw materials and reduces the production cost by effectively utilizing the components of the rectification residues and comprehensively treating the waste gas; meanwhile, the recycling of waste alkali liquor generated in the synthesis section is realized, and the discharge amount of pollutants is reduced.
2. The utility model discloses a recovery and processing apparatus is simple, easy to carry out, through the utility model discloses an implementation can realize the annual festival about steam 4000 tons, and the acetic acid rate of recovery also improves to 88%, and the acetic acid content reduces to about 8% in the waste gas.
Drawings
FIG. 1 shows the recovery of the effective components of the rectification residue and the comprehensive treatment of the waste gas in the production process of the polyvinyl alcohol, and the reference numbers in the figure are as follows:
1, a residue tank; 1a residue inlet of a residue tank; 1b, a residue material outlet; 1c gas phase outlet of residue tank; 1d, a steam inlet of a residue tank jacket; 1e a steam outlet of a residue tank jacket;
2U-shaped pipes; 2a U type tube steam inlet; 2b U type pipe steam outlet;
3, a condenser; 3a condenser gas phase inlet; 3b a liquid phase outlet of the condenser; 3c an air suction opening;
4, a vacuum unit; 4a air inlet; 4b a process water inlet; 4c a process water outlet; 4d, air outlet;
5, distilling out of the tank; 5a condensate inlet; 5b a condensate outlet;
6, sending the distillate out of the pump; 6a out of the pump feed port; 6b is sent out of a pump discharge port;
7, a residue tank; 7a residue inlet of a residue pool; 7b, conveying the residues to an outlet; 7c, a tail gas outlet of the residue tank;
8, an alkaline washing tower; 8a, feeding tail gas of the residue tank into a tower mouth; 8b, feeding alkali liquor into a tower opening; 8c, adding an alkali liquor replenishing port of the alkaline washing tower; 8d, an alkali liquor outlet of the alkaline washing tower; 8e, a process water replenishing port of the alkaline washing tower; 8f, an outlet of tail gas of the caustic washing tower;
9 alkali liquor circulating pump; 9a an alkali liquor inlet; 9b an alkali liquor outlet of the alkali liquor circulating pump; 9c, conveying the alkali liquor to an inlet valve of the wastewater tank;
10 induced draft fan; 10a, an inlet of an induced draft fan; 10b, an outlet of a draught fan;
11 acetylene gas washing tower; 11a washing tower feeding source port; 11b, circulating the alkali liquor into a tower opening; 11c, conveying the alkali liquor in the tower kettle to an outlet;
12 alkali liquor additional pump; 12a an alkali liquor pump inlet; 12b, discharging an alkali liquor pump; 12c qualified lye replenishing port.
Detailed Description
The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1, the present embodiment first provides the following means:
the device comprises a residue tank 1, a U-shaped pipe 2, a condenser 3, a vacuum unit 4, a distillation tank 5, a distillate discharge pump 6, a residue tank 7, an alkaline washing tower 8, an alkaline circulation pump 9, an induced draft fan 10, an acetylene gas washing tower 11 and an alkaline solution supplement pump 12.
A jacket for introducing steam is arranged outside the residue tank 1, and the residue tank 1 is provided with a residue inlet 1a, a residue material outlet 1b and a residue tank gas phase outlet 1 c; a residue tank jacket steam inlet 1d and a residue tank jacket steam outlet 1e are arranged on the jacket;
the U-shaped pipe 2 is arranged at the middle lower part of the residue tank 1 and comprises a U-shaped pipe steam inlet 2a and a U-shaped pipe steam outlet 2 b;
the condenser 3 is provided with a condenser gas phase inlet 3a, a condenser liquid phase outlet 3b and an air suction opening 3 c;
an air inlet 4a, a process water inlet 4b, a process water outlet 4c and an air outlet 4d are arranged on the vacuum unit 4;
the distillation tank 5 is provided with a condensate inlet 5a and a condensate outlet 5 b;
a feed inlet 6a of the distillate discharge pump and a discharge outlet 6b of the distillate discharge pump 6 are arranged;
a residue inlet 7a of the residue tank, a residue delivery outlet 7b and a residue tank tail gas outlet 7c are arranged on the residue tank 7;
a residue pool tail gas inlet 8a, an alkali liquor inlet 8b, an alkali liquor replenishing port 8c, an alkali liquor outlet 8d, an alkali wash tower process water replenishing port 8e and an alkali wash tower tail gas outlet 8f are arranged on the alkali wash tower 8;
an alkali liquor inlet 9a, an alkali liquor outlet 9b and an alkali liquor wastewater inlet valve 9c are arranged on the alkali liquor circulating pump 9;
an induced draft fan inlet 10a and an induced draft fan outlet 10b are arranged on the induced draft fan 10;
the acetylene gas washing tower 11 is provided with a washing tower feeding source port 11a, an alkali liquor circulation inlet tower port 11b and a tower kettle alkali liquor delivery outlet 11 c;
the alkali liquor supplementing pump 12 is provided with an alkali liquor pump inlet 12a, an alkali liquor pump outlet 12b and a qualified alkali liquor supplementing port 12 c;
a residue material outlet 1b and a residue tank gas phase outlet 1c of the residue tank 1 are respectively connected with a residue tank residue inlet 7a of the residue tank 7 and a condenser gas phase inlet 3a of the condenser 3;
a condenser liquid phase outlet 3b and an air suction opening 3c of the condenser 3 are respectively connected with a condensate inlet 5a of the distillation tank 5 and an air inlet 4a of the vacuum unit 4;
a condensate outlet 5b of the distillate tank 5 is connected with a feed inlet 6a of a distillate feed pump 6;
a tail gas outlet 7c of the residue tank 7 is connected with a tail gas inlet 8a of the residue tank of the alkaline washing tower 8;
an alkali liquor outlet 8d of the alkali wash tower 8 and an alkali liquor inlet 8b of the alkali wash tower are respectively connected with an alkali liquor inlet 9a of an alkali liquor circulating pump 9 and an alkali liquor outlet 9b of the alkali liquor circulating pump; a tail gas outlet 8f of the alkaline tower 8 is connected with an induced draft fan inlet 10a of the induced draft fan 10;
a tower bottom alkali liquor delivery outlet 11c and an alkali liquor circulation inlet 11b of the acetylene gas washing tower 11 are respectively connected with an alkali liquor pump inlet 12a and an alkali liquor pump outlet 12b of the alkali liquor supplement pump 12;
an alkali liquor pump outlet 12b of the alkali liquor supplement pump 12 is connected with an alkali liquor supplement port 8c of the alkali wash tower;
the method for recovering the effective components of the rectification residues and comprehensively treating the waste gas in the production process of the polyvinyl alcohol by using the device comprises three unit processes of light and heavy component separation, light component cooling, waste gas alkali washing and water washing, and specifically comprises the following steps:
step 1, separating light and heavy components
Adding rectification residues in the production process of polyvinyl alcohol into a residue tank 1 from a residue inlet 1a of the residue tank, pumping the residue tank to negative pressure by a vacuum unit 4, controlling the temperature of a U-shaped pipe 2 and a jacket, and separating light and heavy components, wherein the heavy components comprise tar, polymerization inhibitor hydroquinone, p-benzoquinone and the like, and carry a small amount of acetic acid; the light components mainly comprise acetic acid and water;
the pressure of the residue tank is controlled to be-45 KPa by the vacuum unit 4, and the temperature of the residue tank is controlled to be 100-120 ℃ by the U-shaped pipe 2 and the steam amount introduced into the jacket.
The light component enters a condenser 3 from a gas phase inlet 3a of the condenser, acetic acid vapor is condensed into acetic acid liquid drops, the acetic acid liquid drops enter a distillation tank 5 through a liquid phase outlet 3b of the condenser and a condensate inlet 5a, and liquid acetic acid is conveyed to a recovery working section by a distillate delivery pump for recycling;
the cold source of the condenser 3 is circulating water, and the temperature is 20-30 ℃; the temperature of the light components at the gas phase inlet 3a of the condenser is 100-120 ℃, and the temperature of the condensate at the liquid phase outlet 3b of the condenser is 40-60 ℃.
Heavy components separated in the residue tank 1 enter a residue tank 7 from a residue inlet 7a of the residue tank, acetic acid gas mixed in residue slurry enters the lower part of an alkaline washing tower 8 through a residue tank tail gas inlet 8a, alkali liquor added through an alkali liquor inlet 8b is mixed with acetic acid gas phase to generate acid-base neutralization reaction, waste alkali liquor generated in a synthesis section is recycled, and after gas is cooled through deionized water at the upper section of the alkaline washing tower 8, tail gas is pumped through an induced draft fan 10, so that the effect that the tail gas is odorless and pollution-free is achieved;
the liquid level of the alkaline washing tower is controlled to be about 30 percent by an inlet valve 9c of the alkaline liquor feeding wastewater tank.
Repeatedly measuring, rectifying under reduced pressure, controlling pressure at-45 KPa, and treating for 2.5m3The steam consumption of the residue/h is reduced to 0.2t/h, and the steam is saved by 4000 tons every year according to 8000 hours of production, the acetic acid recovery rate is improved to 88 percent, and the acetic acid content in the waste gas is reduced to about 8 percent.
Claims (1)
1. The utility model provides a recovery of rectification residue active ingredient and comprehensive processing's of waste gas device in polyvinyl alcohol production process which characterized in that: comprises a residue tank (1), a U-shaped pipe (2), a condenser (3), a vacuum unit (4), a distillation tank (5), a distillate discharge pump (6), a residue tank (7), an alkaline tower (8), an alkaline circulating pump (9), an induced draft fan (10), an acetylene gas washing tower (11) and an alkaline supplementing pump (12);
a jacket for introducing steam is arranged outside the residue tank (1), and a residue tank residue inlet (1a), a residue material outlet (1b) and a residue tank gas phase outlet (1c) are arranged on the residue tank (1); a residue tank jacket steam inlet (1d) and a residue tank jacket steam outlet (1e) are arranged on the jacket;
the U-shaped pipe (2) is arranged at the middle lower part of the residue tank (1) and comprises a U-shaped pipe steam inlet (2a) and a U-shaped pipe steam outlet (2 b);
the condenser (3) is provided with a condenser gas phase inlet (3a), a condenser liquid phase outlet (3b) and an air suction opening (3 c);
an air inlet (4a), a process water inlet (4b), a process water outlet (4c) and an air outlet (4d) are arranged on the vacuum unit (4);
a condensate inlet (5a) and a condensate outlet (5b) are arranged on the distillation groove (5);
a feed inlet (6a) and a feed outlet (6b) of the delivery pump are arranged on the distillate delivery pump (6);
a residue inlet (7a) of the residue pool, a residue delivery outlet (7b) and a tail gas outlet (7c) of the residue pool are arranged on the residue pool (7);
a residue pool tail gas inlet (8a), an alkali liquor inlet (8b), an alkali liquor replenishing port (8c), an alkali liquor outlet (8d), an alkali wash tower process water replenishing port (8e) and an alkali wash tower tail gas outlet (8f) are arranged on the alkali wash tower (8);
an alkali liquor inlet (9a), an alkali liquor outlet (9b) of the alkali liquor circulating pump and an alkali liquor wastewater inlet valve (9c) are arranged on the alkali liquor circulating pump (9);
an induced draft fan inlet (10a) and an induced draft fan outlet (10b) are arranged on the induced draft fan (10);
a washing tower feeding source port (11a), an alkali liquor circulating inlet port (11b) and a tower kettle alkali liquor outlet port (11c) are arranged on the acetylene gas washing tower (11);
an alkali liquor pump inlet (12a), an alkali liquor pump outlet (12b) and a qualified alkali liquor replenishing port (12c) are arranged on the alkali liquor replenishing pump (12);
a residue material outlet (1b) and a residue tank gas-phase outlet (1c) of the residue tank (1) are respectively connected with a residue tank residue inlet (7a) of the residue tank (7) and a condenser gas-phase inlet (3a) of the condenser (3);
a condenser liquid phase outlet (3b) and an air suction opening (3c) of the condenser (3) are respectively connected with a condensate inlet (5a) of the distillation tank (5) and an air inlet (4a) of the vacuum unit (4);
a condensate outlet (5b) of the distillation tank (5) is connected with a feeding port (6a) of a distillate feeding pump (6);
a tail gas outlet (7c) of the residue tank (7) is connected with a tail gas inlet (8a) of the residue tank of the alkaline washing tower (8);
an alkaline washing tower alkaline liquor outlet (8d) and an alkaline liquor inlet (8b) of the alkaline washing tower (8) are respectively connected with an alkaline liquor inlet (9a) and an alkaline liquor outlet (9b) of an alkaline liquor circulating pump (9); an alkaline tower tail gas outlet (8f) of the alkaline tower (8) is connected with an induced draft fan inlet (10a) of the induced draft fan (10);
a tower bottom alkali liquor delivery outlet (11c) and an alkali liquor circulating inlet (11b) of the acetylene gas washing tower (11) are respectively connected with an alkali liquor pump inlet (12a) and an alkali liquor pump outlet (12b) of an alkali liquor supplement pump (12);
an alkali liquor pump outlet (12b) of the alkali liquor supplement pump (12) is connected with an alkali liquor supplement port (8c) of the alkali wash tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921508670.9U CN210786817U (en) | 2019-09-09 | 2019-09-09 | Device for recovering effective components of rectification residues and comprehensively treating waste gas in polyvinyl alcohol production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921508670.9U CN210786817U (en) | 2019-09-09 | 2019-09-09 | Device for recovering effective components of rectification residues and comprehensively treating waste gas in polyvinyl alcohol production process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210786817U true CN210786817U (en) | 2020-06-19 |
Family
ID=71238118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921508670.9U Active CN210786817U (en) | 2019-09-09 | 2019-09-09 | Device for recovering effective components of rectification residues and comprehensively treating waste gas in polyvinyl alcohol production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210786817U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110433625A (en) * | 2019-09-09 | 2019-11-12 | 内蒙古蒙维科技有限公司 | The device and method of recycling Yu the exhaust gas integrated treatment of rectification residue effective component in a kind of polyvinyl alcohol production process |
-
2019
- 2019-09-09 CN CN201921508670.9U patent/CN210786817U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110433625A (en) * | 2019-09-09 | 2019-11-12 | 内蒙古蒙维科技有限公司 | The device and method of recycling Yu the exhaust gas integrated treatment of rectification residue effective component in a kind of polyvinyl alcohol production process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109081767B (en) | A kind of synthetic distillation process method and equipment of monochloromethane | |
| CN102730894A (en) | Method for treating waste alkaline liquor produced in butanol and octanol production device | |
| CN205398514U (en) | Cyclohexanone refining plant in cyclohexanone production process | |
| CN210786817U (en) | Device for recovering effective components of rectification residues and comprehensively treating waste gas in polyvinyl alcohol production process | |
| CN104761452A (en) | Purification method for butyl acrylate crude product | |
| CN211753891U (en) | Recovery system of tail gas is hydrolysised to glyphosate synthetic liquid | |
| CN110937744A (en) | Dimethylamine treatment process in synthetic leather DMF (dimethyl formamide) wastewater heat pump rectification process | |
| CN112299943B (en) | Acetylene cleaning device and method in vinyl acetate production process | |
| CN114317123A (en) | Soapstock oil foot acidification reaction system and technology | |
| CN112500268A (en) | Preparation process of 1, 3-propylene glycol methyl ether | |
| CN111253429B (en) | Recycling device, method and application of organosilicon cracking high ring | |
| CN111269089A (en) | Method and system for recovering hydrolysis tail gas of glyphosate synthetic liquid | |
| CN115888349A (en) | A device and method for tail gas treatment and methanol recovery | |
| CN212246660U (en) | Device for extracting high-purity sodium acrylate or sodium methacrylate from UV monomer production wastewater | |
| CN110433625A (en) | The device and method of recycling Yu the exhaust gas integrated treatment of rectification residue effective component in a kind of polyvinyl alcohol production process | |
| CN103848721A (en) | Aldehyde removal apparatus of pentaerythritol | |
| CN115177964A (en) | Regeneration device and process of waste organic solvent acetonitrile | |
| CN211753888U (en) | Recovery system of tail gas is hydrolysised to glyphosate synthetic liquid | |
| CN209302215U (en) | A kind of device vacuumizing condensate liquid for recycling cyclohexanone tower/cyclohexanol tower | |
| CN217961975U (en) | Nitrogen trifluoride electrolysis trough positive pole tail gas recovery processing device | |
| CN222401462U (en) | Methyl chloride continuous recovery and application device | |
| CN219559579U (en) | Closed loop production system of trifluoroethanol | |
| CN215102939U (en) | Device for producing oxalic acid by using coal-to-ethylene glycol byproduct oxalate | |
| CN110844887B (en) | Method and device for treating hydrogen sulfide | |
| CN223127695U (en) | Tail gas treatment device in aluminum trichloride production |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |