CN105233606B - The processing unit of waste gas in furfural production - Google Patents
The processing unit of waste gas in furfural production Download PDFInfo
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- CN105233606B CN105233606B CN201510692495.3A CN201510692495A CN105233606B CN 105233606 B CN105233606 B CN 105233606B CN 201510692495 A CN201510692495 A CN 201510692495A CN 105233606 B CN105233606 B CN 105233606B
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Abstract
The invention provides a kind of processing unit of waste gas in furfural production, the dust shield 2 above the slagging channel that the dust shield 1 of charging top of tower, deslagging bottom portion are connected, public air channel, air-introduced machine, one-level scrubbing tower, two grades of scrubbing towers, liquid storage tower, primary distillation towers.Waste gas at two is absorbed by dust shield 1 and dust shield 1, the waste gas of absorption passes through public air channel, one-level scrubbing tower is introduced by air-introduced machine, the tail gas that one-level scrubbing tower is excluded enters back into two grades of scrubbing towers, and the bottom of towe solution of one-level scrubbing tower and two grades of scrubbing towers is collected into liquid storage tower together.Fully each process of reuse of the invention produces the active ingredient in waste gas, economizes on resources, improves effectiveness of operation.The discharge of organic gas is greatly reduced, substantially without air pollution, production environment is optimized.
Description
Technical field
The present invention relates to prepare the collection of generation waste gas and processing method in furfural using crops.
Background technology
Waste gas is produced in furfural more, has furfural, methanol, water, acetic acid etc., if do not handled direct emptying, environment will be polluted,
The utilization rate of useful component also significantly lowers in raw material.
Number of patent application discloses waste gas produced during a kind of furfural production for 2014201540591 utility model
Cleaning treatment system, its structure includes cyclone separator, the first adsorption tower, the second adsorption tower, condenser, recycling can and steaming
The equipment such as boiler furnace.The utility model can inhale first of waste gas feeding produced in each link of furfural production equipped with molecular sieve
In attached tower or the second adsorption tower, normal pressure absorption is carried out to the harmful organic substance in waste gas, absorption is stopped when absorption is close to saturation,
Then De contamination processing is carried out to molecular sieve, so that it recovers effect.The processing of molecular sieve De contamination is to be passed through steam, by molecular sieve
200-300 DEG C are heated to, makes the harmful organic substance adsorbed in molecular sieve gasify, the pernicious gas produced by De contamination is special
Door is collected, and the organic matter being enriched with is easier to concentrate and carries out harmless treatment.Absorption and desorption cause in the utility model
Handling process is long, and efficiency is low.
Number of patent application discloses a kind of furfurol industry exhaust emission containing aldehydic acid for 2013206259330 utility model
Control device, including slag canopy, it is characterised in that：Also include gas-slag separation device, condensing unit, wastewater collection pond, circulating cooling
Water pond, benefit blower fan；Slag canopy also includes wind-supplying mouth, is connected with mending blower fan；Gas-slag separation device includes forward and backward gas-slag separation lattice
Grid, acid-proof axial id fan；Acid-proof axial id fan is arranged between forward and backward gas-slag separation grid；Condensing unit includes waste gas
Entrance, circulating cooling water inlet, condensing unit exhaust outlet, waste liquid outlet, circulating cooling water out；Slag canopy exhaust outlet and gas slag point
It is connected from device portal；The outlet of gas-slag separation device is connected with condensing unit exhaust gas entrance；Circulating cooling water inlet is with following
Ring cooling water pond water pump is connected；Condensing unit exhaust outlet is connected with the gas-slag separation device of acid-proof axial id fan front end
It is logical；Condensing unit waste liquid outlet is connected with wastewater collection pond；Condensing unit circulating cooling water out and recirculated cooling water pond
It is connected.The device is only prevented and remedied pollution, and waste gas fails to recycle completely.
The content of the invention
Goal of the invention：
A kind of abundant reuse active ingredient is provided, the processing unit of waste gas in the basic furfural production without air pollution.
Technical scheme：
There is charging tower, hydrolysis tower, fore-running in the furfural production of the present invention in the processing unit of waste gas, furfural production line
Tower, scrubbing tower, rectifying column.Because waste gas is mainly derived from furfural raw materials in furfural production（Feed bin）When and hydrolysis kettle deslagging
When the large quantity of exhaust gas that produces（About 160 degree of temperature when furfural dregs take the dish out of the pot, humidity is more than 48%, and pressure is about 0.4Mpa, opens bottom valve
Quick deslagging can also produce some when producing a large amount of gaseous contamination environment, hydrolysis condensate and fore-running condensation and not coagulate waste gas.These give up
Contain furfural, methanol, water, acetic acid etc. in gas）.
The processing unit has the dust suction above the slagging channel that the dust shield A of charging top of tower, deslagging bottom portion are connected
Cover B, public air channel, air-introduced machine, one-level scrubbing tower（Contain water jet A, venthole, liquid outlet A）, two grades of scrubbing towers（Contain spray
Mouth of a river B, drain hole, liquid outlet B）, liquid storage tower, primary distillation tower.
Waste gas at two is absorbed by dust shield A and dust shield B, and the waste gas of absorption is by public air channel, by air inducing power traction
Enter one-level scrubbing tower（Countercurrent mass transfer, water enters from tower top, and gas enters countercurrent mass transfer absorption from bottom of towe and reaches purification purpose）, one-level
The tail gas that scrubbing tower is excluded enters back into two grades of scrubbing towers, and the bottom of towe solution of one-level scrubbing tower and two grades of scrubbing towers is collected into storage together
Liquid tower, washings reach that finite concentration is drained into the primary distillation tower of preceding working procedure.
One in hydrolysis tower, primary distillation tower, rectifying column or the waste gas of several middle outflows can be formed by condenser condensation
Solution flows out from respective bottom of towe, without from overhead collection waste gas.
Primary waste gases produce process：
（1）Raw material crushes the waste gas with conveying operation
The dust that corncob after crushing and crushing is produced in course of conveying, is crushed using closing first, then by changing
Mode of movement, by bucket elevator feeding, prevents flying dust four from dissipating pollution environment.Pulverizer installs gas skirt additional and gathered dust, using cloth bag
Deduster dedusting.Gas collecting efficiency reaches 90%, and efficiency of dust collection 98%, blower fan exhausting amount is more than 6000m3/h.After removing dust, pollutant
Concentration can drop to 40mg/m3 by the 2000mg/m3 before dedusting.It is small according to daily operation 8 because this workshop section is batch operation
When, annual dust discharge amount 2.22t.
（2）The waste gas of hydrolyzing process
Corncob mixed with dilute sulfuric acid after enter hydrolysis kettle, capping heating, boosting, when pot inner pressure rise to 0.2MPa and
During 0.4MPa, exhaust-valve is opened respectively and is emptied 1 minute, excessive gas in pot is excluded.Above-mentioned aiutage height of release is 15m, row
Speed is put less than 0.05kg/h.Intermittent discharge.
Beneficial effect：Each process of abundant reuse produces the active ingredient in waste gas, economizes on resources, and improves effectiveness of operation.
The discharge of organic gas is greatly reduced, substantially without air pollution, production environment is optimized.
Waste gas, waste liquid circulation are utilized in production facility, and automaticity is higher, reduce artificial maintenance work amount.
Brief description of the drawings
The process flow diagram of present invention during Fig. 1.
Embodiment
There is charging tower, hydrolysis tower, primary distillation tower, scrubbing tower in the processing unit of waste gas in furfural production, furfural production line,
Rectifying column.
The processing unit has the dust suction above the slagging channel that the dust shield A of charging top of tower, deslagging bottom portion are connected
Cover B, public air channel, air-introduced machine, one-level scrubbing tower, two grades of scrubbing towers, liquid storage tower, primary distillation towers.
One-level scrubbing tower contains water jet A, venthole, liquid outlet A, and two grades of scrubbing towers contain water jet B, drain hole, gone out
Liquid mouthful B.
Waste gas at two is absorbed by dust shield A and dust shield B, and the waste gas of absorption is by public air channel, by air inducing power traction
Enter one-level scrubbing tower, the tail gas that one-level scrubbing tower is excluded enters back into the tower of two grades of scrubbing towers, one-level scrubbing tower and two grades of scrubbing towers
Bottom solution is collected into liquid storage tower together, and washings reach that finite concentration is drained into the primary distillation tower of preceding working procedure.
In one-level scrubbing tower, using countercurrent mass transfer mode, water enters from tower top, and gas enters countercurrent mass transfer absorption from bottom of towe and reached
To purification purpose.
Hydrolysis tower, primary distillation tower, the waste gas of rectifying column form solution and flowed out from respective bottom of towe by condensation.
Claims (2)
1. there is charging tower, hydrolysis tower, primary distillation tower, washing in the handling process of waste gas in a kind of furfural production, furfural production line
Tower, rectifying column；It is characterized in that：
Also have charging top of tower dust shield A, deslagging bottom portion connection slagging channel above dust shield B, public air channel,
Air-introduced machine, one-level scrubbing tower, two grades of scrubbing towers, liquid storage tower, primary distillation towers；
One-level scrubbing tower contains water jet A, venthole, liquid outlet A, and two grades of scrubbing towers contain water jet B, drain hole, liquid outlet
B；
Waste gas at two is absorbed by dust shield A and dust shield B, and the waste gas of absorption introduces one by public air channel by air-introduced machine
Level scrubbing tower, the tail gas that one-level scrubbing tower is excluded enters back into two grades of scrubbing towers, and the bottom of towe of one-level scrubbing tower and two grades of scrubbing towers is molten
Liquid is collected into liquid storage tower together, and washings reach that finite concentration is drained into the primary distillation tower of preceding working procedure；
Wherein in one-level scrubbing tower, using countercurrent mass transfer mode, water enters from tower top, and gas enters countercurrent mass transfer absorption from bottom of towe and reached
To purification purpose.
2. the handling process of waste gas in furfural production as claimed in claim 1, it is characterised in that：Hydrolysis tower, primary distillation tower, rectifying
One of tower or the waste gas of several middle outflows are condensed by condenser, are formed solution and are flowed out from respective bottom of towe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510692495.3A CN105233606B (en) | 2015-10-23 | 2015-10-23 | The processing unit of waste gas in furfural production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510692495.3A CN105233606B (en) | 2015-10-23 | 2015-10-23 | The processing unit of waste gas in furfural production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105233606A CN105233606A (en) | 2016-01-13 |
| CN105233606B true CN105233606B (en) | 2017-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510692495.3A Active CN105233606B (en) | 2015-10-23 | 2015-10-23 | The processing unit of waste gas in furfural production |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113262580A (en) * | 2021-06-09 | 2021-08-17 | 江西理工大学 | Acetic acid recovery method for furfural production waste gas |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101130531A (en) * | 2007-09-17 | 2008-02-27 | 济南圣泉集团股份有限公司 | System and method for producing furol with agricultural and forestry castoff |
| CN101735181A (en) * | 2008-11-18 | 2010-06-16 | 刘绍凯 | Pollution-free energy-saving new process for producing furfural, acetic acid and active carbon |
| CN205252787U (en) * | 2015-10-23 | 2016-05-25 | 上海毅知实业有限公司 | Processing apparatus of waste gas in furfural production |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150087041A1 (en) * | 2013-09-26 | 2015-03-26 | E I Du Pont De Nemours And Company | Production of ethanol with reduced contaminants in a cellulosic biomass based process |
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2015
- 2015-10-23 CN CN201510692495.3A patent/CN105233606B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101130531A (en) * | 2007-09-17 | 2008-02-27 | 济南圣泉集团股份有限公司 | System and method for producing furol with agricultural and forestry castoff |
| CN101735181A (en) * | 2008-11-18 | 2010-06-16 | 刘绍凯 | Pollution-free energy-saving new process for producing furfural, acetic acid and active carbon |
| CN205252787U (en) * | 2015-10-23 | 2016-05-25 | 上海毅知实业有限公司 | Processing apparatus of waste gas in furfural production |
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| CN105233606A (en) | 2016-01-13 |
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Address after: 200434 Hongkou District Memorial Road, Hongkou District, Shanghai, room 1401, room 8 Patentee after: Shanghai Yizhi industrial Limited by Share Ltd Address before: 200434 Hongkou District Memorial Road, Hongkou District, Shanghai, room 1401, room 8 Patentee before: Shanghai Yizhi Enterprise Co., Ltd. |