CN103446949A - Silencing air drying and residue discharging method by using solid and gas separation - Google Patents
Silencing air drying and residue discharging method by using solid and gas separation Download PDFInfo
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- CN103446949A CN103446949A CN2013103967233A CN201310396723A CN103446949A CN 103446949 A CN103446949 A CN 103446949A CN 2013103967233 A CN2013103967233 A CN 2013103967233A CN 201310396723 A CN201310396723 A CN 201310396723A CN 103446949 A CN103446949 A CN 103446949A
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Abstract
The invention discloses a silencing air drying and residue discharging method by using solid and gas separation and is particularly applicable to production of furfural residues. The method comprises the following steps: (1) after hydrolysis in a furfural production process is completed, discharging aldehyde gas in a hydrolysis pot into a condenser; (2) condensing the aldehyde gas through the condenser to enable the pressure in the hydrolysis pot to drop to 2-4kg/cm<2>, sucking the aldehyde gas in the hydrolysis pot through a vacuum system to enable the pressure in the hydrolysis pot to drop to 0.3-0.7kg/cm<2>, and charging hot air at the temperature of 190-200 DEG C into the hydrolysis pot to enable the pressure in the hydrolysis pot to rise up to 6-7kg/cm<2>; (3) opening a residue discharging valve, conveying the furfural residues and the hot air together into a gas and residue separator through a pipeline, performing the gas and solid separation, discharging odorless gas from the top of the separator, and discharging the furfural residues from the bottom of the separator in a centralized manner. The residue and gas separation in the discharging process of the furfural residues is improved, the air pollution caused by residue dust is reduced, and the noise and the content of water in the furfural residues are reduced.
Description
Technical field
The present invention relates to a kind of solid vapour separation method, particularly a kind of solid vapour separates the dry Slagoff method of noise elimination air, belongs to the Chemical Manufacture isolation technics.
Background technology
China is maximum in the world furfural production state, and furfural output accounts for the over half of world wide production.When furfural dregs discharges in process of production in most of furfural producer, use conventional methods the method that the furfural dregs utilization is blown out and directly be discharged in the slag canopy.The fairly simple easy operating of this production technology, but the deslagging technique adopted is relatively backward, substantially rests on the level of the sixties in last century, with developed country, a certain distance is arranged.The sound of blowing out in the furfural production tapping process is huge, the slag vapour of discharge directly in the slag canopy, everywhere, a large amount of artificial of waste during collection; Foul smell is unpleasant first, and work situation is disliked slightly, and second most of gas and part slag dirt are diffused in atmosphere by steam vent, and serious environment pollution causes and has a strong impact near resident's physical and mental health factory.To this, common people's strong reaction.In addition, the furfural dregs moisture content that existing technique is discharged is higher, generally up to more than 50%, affects the burning of boiler.In view of this, find a kind of new furfural Slagoff method, for improving the furfural production condition, reduce the impact on surrounding enviroment, improve the quality of products particularly important.
Summary of the invention
The object of the present invention is to provide a kind of solid vapour to separate the dry Slagoff method of noise elimination air, for the furfural production process, overcome the defect that prior art exists.
The technical scheme that the present invention takes is such.A kind of solid vapour separates the dry Slagoff method of noise elimination air, comprises the following steps:
(1) in the furfural production process, after hydrolysis, the aldehyde vapour in hydrolyzer is discharged in condenser by emptying pipe;
(2) through condenser condenses by the Pressure Drop in hydrolyzer to 2kg～4kg/cm
2, through vacuum system, by the aldehyde vapour sucking-off in hydrolyzer, make the hydrolyzer internal pressure be down to 0.3kg～0.7kg/cm
2, pass into 190～200 ℃ of hot-airs in hydrolyzer, the hydrolyzer internal pressure is risen to 6-7kg/cm
2;
(3) open the slag-discharging valve furfural dregs arrives in the vapour pulp separator by pipeline together with hot-air, through vapour, admittedly separate, odorless gas is discharged from the separator top, furfural dregs is concentrated and is discharged through the separator bottom, there is no like this sound during deslagging, the furfural dregs of discharging does not only have foul smell, and the solid separator well of vapour; Solid focuses on the separator bottom, can not be diffused in air, realizes that vapour separates admittedly, has reduced the work of artificially collecting.
Due to residue aldehyde vapour in the sucking-off hydrolyzer again in discharging aldehyde vapour process, in hydrolyzer, the moisture content of furfural dregs has also reduced greatly, carries out secondary drying passing into 190～200 ℃ of hot-airs in pot He in slag-discharging device, makes the moisture content reduction by 10% of furfural dregs.
Method of the present invention, be specially adapted to furfural dregs production, for the discharge technology of furfural dregs.Existing equipment is transformed a little and can be realized.
The beneficial effect that the present invention obtains is as follows:
The slag vapour that the present invention can improve in the furfural tapping process separates; Reduce the pollution of slag dirt to air, because aldehyde vapour is sucked out, discharge be air and furfural dregs, eliminated the impact of the foul smell in the tapping process on operating personnel and environment.Make the water content in furfural dregs reduce by 10%, the huge report that furfural production is produced in tapping process has the elimination effect.Also reclaim the furfural in aldehyde vapour in hydrolyzer simultaneously.
The accompanying drawing explanation
What Fig. 1 provided is process chart of the present invention.
The implication of number in the figure representative is:
1, hydrolyzer 2, Residue extraction pipeline 3, slag-discharging device 4, condenser 5, condensate liquid storage tank
6, hot-air storage tank 7, air compressor 8, vavuum pump 9, vacuum buffer tank.
The specific embodiment
Following examples are for illustrating the present invention.
A kind of solid vapour separates the dry Slagoff method of noise elimination air, is applied to the furfural dregs production process, and its technological process as shown in Figure 1, on existing furfural dregs production technology basis, is built a new dreg removing system, changes original in line slag method into the vapour solid separation method.5 meters of slag-discharging device 3 diameters, high 8 meters, the intermediate exhaust cylinder is 2.5 meters of diameters, under 800 millimeters of taper discharge port diameters are arranged, the cylindrical shell crust is 10 millimeters steel plates, and Ceramic is inside arranged, and the stainless steel casing is arranged again, the stainless steel that hypocentrum is 6 millimeters thick is made; Under it, supporting leg is arranged, can regulate the height of supporting leg according to the hydrolyzer size, to meet the stacking of furfural dregs.Hydrolyzer is in parallel or be connected in series by pipeline and slag-discharging device charging aperture, the hydrolyzer emptying pipe is connected with condenser, rare aldehyde liquid of condenser condenses is discharged into rare aldehyde flow container condenser and is connected with vavuum pump by vacuum buffer tank, and the hydrolyzer venthole is connected with valve and controls with the hot compressed air tank by pipeline.It is as follows that furfural dregs separates dry tapping process:
(1) first hydrolyzer 1, slag-discharging device 3, condenser 4, condensate liquid storage tank 5, hot-air storage tank 6, vacuum buffer tank 9, air compressor 7, the corresponding Residue extraction pipeline 2 of vavuum pump 8 use are connected;
(2) after the hydrolysis, open aldehyde vapour in hydrolyzer exhaust-valve goalkeeper hydrolyzer while preparing deslagging and be expelled to condenser, make its Pressure Drop to 2kg～4kg/cm
2;
(3) the aldehyde vapour of discharging, through condenser condenses, is collected condensate liquid in storage tank;
(4) start vacuum system residue aldehyde vapour in hydrolyzer is extracted out, make the hydrolyzer internal pressure be down to 0.3kg～0.7kg/cm
2, stop vacuumizing;
(5) inject 190～200 ℃ of hot-airs in hydrolyzer, pressure is risen to 6-7 kg/cm
2stop boosting and close air intake valve;
(6) opening slag-discharging valve separates furfural dregs by furfural dregs and discharge after gas separates through slag-discharging device by pipeline;
(7) the rare aldehyde water in the condensate liquid storage tank is sent to do in furfural production mix the diluted acid reuse.
Claims (1)
1. a solid vapour separates the dry Slagoff method of noise elimination air, it is characterized in that comprising the following steps:
(1) in the furfural production process, after hydrolysis, the aldehyde vapour in hydrolyzer is put in condenser by emptying pipe;
(2) through condenser condenses by the Pressure Drop in hydrolyzer to 2kg～4kg/cm
2, through vacuum system, by the aldehyde vapour sucking-off in hydrolyzer, make the hydrolyzer internal pressure be down to 0.3kg～0.7kg/cm
2, pass into 190 ℃～200 ℃ hot-airs in hydrolyzer, the hydrolyzer internal pressure is risen to 6-7 kg/cm
2;
(3) open slag-discharging valve, furfural dregs arrives in the vapour pulp separator by pipeline together with hot-air, through vapour, admittedly separates, and odorless gas is discharged from the separator top, and furfural dregs is concentrated and discharged through the separator bottom.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310396723.3A CN103446949B (en) | 2013-09-04 | 2013-09-04 | A kind of solid vapour is separated noise elimination air oxygen detrition Slagoff method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310396723.3A CN103446949B (en) | 2013-09-04 | 2013-09-04 | A kind of solid vapour is separated noise elimination air oxygen detrition Slagoff method |
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| CN103446949A true CN103446949A (en) | 2013-12-18 |
| CN103446949B CN103446949B (en) | 2015-12-02 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1616443A (en) * | 2004-09-27 | 2005-05-18 | 王�义 | Process and device for producing furol by two step continuous low pressure high temperature dynamic hydrolysis method |
| CN101385911A (en) * | 2008-09-20 | 2009-03-18 | 武建民 | Furfural production noise sour-gas dust odor treatment method |
| CN101914078A (en) * | 2010-08-17 | 2010-12-15 | 山东万盛环保科技发展有限公司 | Process for producing furfural by bagasse |
| CN102228896A (en) * | 2011-04-01 | 2011-11-02 | 山东万盛环保科技发展有限公司 | Furfural slag recycling device |
-
2013
- 2013-09-04 CN CN201310396723.3A patent/CN103446949B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1616443A (en) * | 2004-09-27 | 2005-05-18 | 王�义 | Process and device for producing furol by two step continuous low pressure high temperature dynamic hydrolysis method |
| CN101385911A (en) * | 2008-09-20 | 2009-03-18 | 武建民 | Furfural production noise sour-gas dust odor treatment method |
| CN101914078A (en) * | 2010-08-17 | 2010-12-15 | 山东万盛环保科技发展有限公司 | Process for producing furfural by bagasse |
| CN102228896A (en) * | 2011-04-01 | 2011-11-02 | 山东万盛环保科技发展有限公司 | Furfural slag recycling device |
Non-Patent Citations (1)
| Title |
|---|
| 谷克仁等: "《植物油料资源综合利用》", 31 December 2001, article "糠醛的生产方法" * |
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