CN101564601A - Method for absorbing tail gas from chemical production and device for preparing polyester resin by using same - Google Patents
Method for absorbing tail gas from chemical production and device for preparing polyester resin by using same Download PDFInfo
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- CN101564601A CN101564601A CNA200810095721XA CN200810095721A CN101564601A CN 101564601 A CN101564601 A CN 101564601A CN A200810095721X A CNA200810095721X A CN A200810095721XA CN 200810095721 A CN200810095721 A CN 200810095721A CN 101564601 A CN101564601 A CN 101564601A
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Abstract
The invention relates to a method for absorbing tail gas from chemical production, comprising the following steps: (1) guiding tail gas generated in the chemical production process to a tail gas storage area to be forcibly cooled; (2) transforming part of the components of the tail gas into liquid, and guiding the liquid to a first area filled with absorbent to be detoxified; (3) guiding part of the tail gas forcibly cooled incompletely to a second area to be reabsorbed in a spraying method; (4) guiding part of the reabsorbed tail gas to a third area to be stored; (5) detecting part of the tail gas stored in the third area according to the detection standard procedure drafted by experts so as to confirm that whether the tail gas conforms to detection standard; and (6) emptying part of the tail gas stored in the third area if the tail gas conforms to detection standard, or else, processing part of the tail gas according to the step (3). The method for absorbing tail gas from chemical production is particularly suitable for absorbing the tail gas from the unsaturated polyester resin production. The invention also discloses a device for absorbing tail gas to prepare the unsaturated polyester resin.
Description
Technical field
The present invention relates generally to Chemical Manufacture environment protection method and chemical production equipment, and is particularly a kind of to the tail gas and/or the waste gas that are produced in the Chemical Manufacture, the process units that absorbs the method for processing and adopt a kind of unsaturated polyester resin of this method.
Background technology
Raw material that adopts in the Chemical Manufacture or intermediate products, or much be poisonous in discharge tail gas and the waste gas, or harmful to human body or biotic environment.People expect effective Chemical Manufacture environment protection method and the chemical production equipment that adopts these methods, seek the tail gas and/or the waste gas that are produced in the Chemical Manufacture, the various process units with environmental protection that absorb the method for processing and adopt this method.For example in the production process of unsaturated polyester resin, polyacid, polyalcohol etc. are arranged in the Organic Ingredients, course of reaction also has multiple byproduct and generates.Even major part is a steam in this process and the final tail gas that generates, but the smell that is entrained with a small amount of industrial chemicals bring adverse effect also can for the surrounding environment of Chemical Manufacture, therefore need to whole tail gas and waste gas is collected and it is carried out harmless treatment.To the measure that tail gas is handled, very general in the prior art, a kind of processing method of tail gas during for example the prosperous grade of Yang Tian people discloses benzene class storage tank in Chinese patent CN101028580.What adopt is combustion method.
People such as Zhao Xiaoping are then in Chinese patent CN 1903415A, disclosed a kind of processing method to tail gas from absorption tower of acrylonitrile installation, and what adopt is to carry out catalytic oxidation after Electric heating or the steam heated under the precious metal catalyst effect, and volatile organic matter is oxidized to emptying behind the innocuous substance.
Occupy the female people of grade of the Chinese and in Chinese patent CN 101073742A, disclose a kind of absorption processing method tail gas.Mainly be the tail gas of p-poly-phenyl ethylene production.Wherein adopting has the absorption tower spray equipment, or the like.
For the odor eliminating in tail gas and the waste gas, and the technology of their qualified discharge and method, society and environment all give very high expectation and concern.But still lack the pointed very strong tail gas and the professional treatment method of waste gas, and in that as if provide also can't be satisfactory aspect the dynamical production equipment that can handle tail gas and waste gas.
Summary of the invention
The present invention aims to provide the tail gas that is produced in the Chemical Manufacture and/or waste gas, the method for collecting and carrying out harmless treatment.
A further object of the present invention provides tail gas and waste gas is all absorbed process units with harmless treatment, particularly be provided in the production process of unsaturated polyester resin, whole tail gas and waste gas are absorbed method with harmless treatment and the process units that adopts this method.
Generate the absorption processing method of tail gas in a kind of Chemical Manufacture, it includes following steps: 1, with exhaust gas guide to a storage area that produces in the course of reaction, and in this storage area, carry out and force cooling, 2, part composition in the cooling procedure in this tail gas is transformed into liquid state, this liquid parts is directed to a first area that fills absorbent, make it in this first area, carry out detoxification or detoxifcation processing, 3, to force the incomplete gas of cooling partly to be directed to a second area in this tail gas, in this zone, adopt the spray mode to absorb processing again, 4, this is absorbed the tail gas gas of handling again partly direct into one the 3rd zone storage, 5, to being stored in the tail gas gas part in the 3rd zone, detect according to an airborne release monitoring standard program of drafting by the expert, to determine whether it meets the standard of this detection, 6, if determine to meet this examination criteria, then the tail gas gas that stores in the 3rd zone is partly carried out airborne release; If determine not meet this examination criteria, then the tail gas gas part that stores in the 3rd zone is back to above-mentioned third step again.
A kind of absorption processing method of tail gas, this method are particularly suitable for the absorption of tail gas in the unsaturated polyester resin production process and handle, and it includes following steps:
With exhaust gas guide to a storage area that produces in the course of reaction, and in this storage area, carry out and force cooling,
Part acid ingredient in the cooling procedure in this tail gas is transformed into liquid state, and this liquid parts is directed to a first area that fills alkaline absorbent, makes its chemical method of carrying out neutralization reaction in this first area handle.
With forcing the incomplete gas of cooling partly to be directed to a second area in this tail gas, in this zone, adopt the spray mode to absorb processing again;
This is absorbed the tail gas gas of handling again partly directs into one the 3rd zone storage,
To the tail gas gas part that is stored in the 3rd zone, detect, whether meet the standard of this detection to determine it according to an airborne release monitoring standard program of drafting by the expert.
If determine to meet this examination criteria, then the tail gas gas that stores in the 3rd zone is partly carried out airborne release; If determine not meet this examination criteria, then the tail gas gas part that stores in the 3rd zone is back to above-mentioned third step again.
A kind of process units with unsaturated polyester (UP) of tail gas absorption processing, it includes a reactor 11, fractionating column 1103 condensers 1104 that are linked in sequence and install with this reactor top, 1105, with recipient 12, after this recipient, also have preceding surge tank 13 by pipeline UNICOM, and in the vavuum pump 1302 of this surge tank top configuration connection.Also being provided with one collects from the tail gas of this receiver 12 and vavuum pump 1302 and the cooling and absorbing still 21 of waste gas, being an absorption spray still 22 coupled, that the top is equipped with spray and filler device after this absorption still, then is a back surge tank 23 that plays the storage effect after this absorption spray still 22.
Preferred embodiment below with reference to drawings attached is further explained the present invention, and those skilled in the art can therefrom recognize potential other many purposes and the advantages among the present invention.
Description of drawings
Fig. 1 is the block diagram by the absorption processing method of generation tail gas in the Chemical Manufacture of preferred embodiment of the present invention,
Fig. 2 is the schematic diagram that tail gas absorbs the process units of the unsaturated polyester (UP) of handling that has by preferred embodiment of the present invention,
Fig. 3 be the explanatory view that amplified of the parts among Fig. 2, the part that absorbs still 21 and
Fig. 4 is the explanatory view that has amplified the parts among Fig. 2, the part that absorbs spray still 22.
The specific embodiment
In the mode more more detailed absorption processing method and a kind of process units with unsaturated polyester (UP) of tail gas absorption processing that generates tail gas in a kind of Chemical Manufacture described now than above general introduction.
Yet, before describing the present invention in detail, need give statement, the present invention is not limited to for example concrete of the description of doing.Can make various variations to described the present invention and replace not deviating from aim of the present invention and scope with equivalent.Unless otherwise defined, in that these all used technology scientific and technical terms should to do common understanding identical with those of ordinary skill in the technical field of the invention.
According to preferred embodiment of the present invention is the absorption processing method that generates tail gas in a kind of Chemical Manufacture, and it includes following step:
At first be exhaust gas guide to a storage area that to be produced in the Chemical Manufacture course of reaction, and in this storage area, carry out and force cooling.
In second step, the part in the cooling procedure in this tail gas becomes branch to be transformed into liquid state.This liquid parts is directed to a first area that fills absorbent, allows it in this first area, carry out detoxification and/or detoxifcation processing.
In the 3rd step,, in this zone, adopt the spray mode to absorb processing again with forcing the incomplete gas of cooling partly to be directed to a second area in this tail gas.
In the 4th step, this is absorbed the tail gas gas of handling again partly direct into one the 3rd zone storage.
The 5th step, to the tail gas gas part that is stored in the 3rd zone, detect according to an airborne release monitoring standard program of drafting by the expert, with determine standard that whether it meets this detection and
In the 6th step,, then the tail gas gas that stores in the 3rd zone is partly carried out airborne release if determine to meet this examination criteria; If determine not meet this examination criteria, then the tail gas gas part that stores in the 3rd zone is back to above-mentioned third step again.
Wherein adopt the spray mode to absorb processing again in the described second area with forcing the incomplete gas of cooling partly to be directed in this tail gas.For increasing the gas part and spraying contacting of liquid, make the separation of harmful components in the gas part and play effective filtering effect, in this step, be provided with spray facility and retardance facility.Be intended to strengthen the time and the chance of gas part and the contact action of spray liquid and/or adsorbent.
Wherein, the airborne release monitoring standard program that described expert drafts is meant any suitable trace routine that the professional is formulated according to the concrete regulations of rules of environmental protection, such as the air monitoring examination criteria, or the like.It can be the employing allocation plan that comprises various detecting instrument instrument; The software kit of the handling procedure that the analysis defined of test result is adapted to; And finally decisioing making, an and complete automatic control system sending the instruction that drives the action of control original paper etc. according to the result of determination order.
According to another preferred embodiment of the present invention is a kind of absorption processing method that is particularly suitable for tail gas in the unsaturated polyester resin production process.
The absorption processing method of this tail gas specifically is meant following each step:
With exhaust gas guide to a storage area that produces in the course of reaction, and in this storage area, carry out and force cooling.
In the unsaturated polyester resin synthetic reaction process, the temperature in the reactor can rise to 160 ℃ to 230 ℃.Therefore have a large amount of steam-laden tail gas to discharge in the reactor, as shown in fig. 1, " tail gas " first enters afterwards is exactly " forcing a cooling " program.
Part acid ingredient in the cooling procedure in this tail gas is transformed into liquid state, and this liquid parts is directed to a first area that fills alkaline absorbent, makes it carry out neutralization reaction (among Fig. 1 shown in the block diagram of the harmless treatment on right side) in this first area.Alkaline absorbent wherein can be a potassium hydroxide, NaOH, and calcium hydroxide, NaOH is preferably adopted in any one in the calcium bicarbonate and/or several combination arbitrarily.The concentration of alkaline absorbent can be 0.5% to 20%; Preferably 1.8% to 12%.
With forcing the incomplete gas of cooling partly to be directed to a second area in this tail gas, in this zone, adopt the spray mode to absorb processing again." the secondary harmless treatment " in Fig. 1 just.
This is absorbed the tail gas gas of handling again partly direct into one the 3rd zone storage.
To the tail gas gas part that is stored in the 3rd zone, detect, whether meet the standard of this detection to determine it according to an airborne release monitoring standard program of drafting by the expert:
If determine to meet this examination criteria, then the tail gas gas that stores in the 3rd zone is partly carried out airborne release; If determine not meet this examination criteria, then the tail gas gas part that stores in the 3rd zone is back to above-mentioned third step again.
At this, adopt the spray mode to absorb processing, " the secondary harmless treatment " in Fig. 1 just again in the described second area with forcing the incomplete gas of cooling partly to be directed in this tail gas, be meant to increasing the gas part and spraying contacting of liquid, make the separation of harmful components in the gas part and play effective filtering effect.Wherein can be provided with spray facility and retardance facility, be intended to strengthen the time and the chance of gas part and the contact action of spray liquid and/or adsorbent, and passage makes air-flow make a circulation under the effect of this retardance facility and advances.This retardance facility can be to adopt suitable fillers, object that relative enlarged surface is amassed such as having, that the stable chemical performance material is made, and the adsorbent of the excellent adsorption that is suitable for.
As previously mentioned, the airborne release monitoring standard program that the expert here drafts is meant any suitable trace routine that the professional is formulated according to the concrete regulations of rules of environmental protection, such as the air monitoring examination criteria.Can comprise the allocation plan that adopts corresponding various detecting instrument instrument; The corresponding handling procedure of analysis defined to test result; And whether the disposed tail gas of finally making about now being stored in the 3rd zone meets the judgement that allows discharge standard etc.
According to the configuration of reality, discharging can be carried out with intermittent mode.Can Artificial Control.Also can be that intelligent mode is operated and controlled, carry out in a continuous manner.
If adopting has at-once monitor detection system pattern, then also can be that the continuation mode with automatic control carries out.Program 24 (Fig. 2) can in time make one and/or several valves (for example 2301 of Fig. 2,2303) conversion between opening and closing as required according to result of determination instruction.
Below explanation is according to a kind of process units with unsaturated polyester (UP) of tail gas absorption processing of preferred embodiment of the present invention.
In Fig. 2, schematically shown this process units that tail gas absorbs the unsaturated polyester (UP) of handling that has.
It has adopted above-mentioned tail gas to absorb processing method.Front portion with process units of the unsaturated polyester (UP) that tail gas absorb to handle is a polyester synthesizer 10, as shown in Figure 2, includes a reactor 11 in the polyester synthesizer 10.Reactor 11 is equipped with the feeding device downward from the top 1101, and is arranged on the power-actuated agitator 1102 that is roughly on the middle position.Peripheral part along the reactor body can have insulation and/or register, can carry out under a kind of suitable temperature so that polyester is synthetic.
The top of this reactor 11 also is provided with a fractionating column 1103 that is connected and installs with reactor 11.A vertical condenser 1104 also is installed after fractionating column 1103, and horizontal condenser 1105 subsequently.Recipient 12 in addition following closely.Recipient 12 mainly is in order to collect and to store the waste water via condensed in two stages.
After this recipient 12, also have a preceding surge tank 13 by pipeline UNICOM, and a vavuum pump 1302 that on 1301 positions, top of this surge tank 13, disposes with connected mode.According to production of resins technology, start vavuum pump 1302, the gas in the suction reaction system is to tail gas absorption treating device 20 afterwards.
Tail gas absorption treating device 20 includes and collects from the tail gas of this receiver 12 and vavuum pump 1302 and a cooling and absorbing still 21 of waste gas.Condenser 2102 (Fig. 3) is equipped with at the top of cooling and absorbing still 21, also fills absorbent in the kettle.This alkaline absorbent can be a potassium hydroxide, NaOH, and calcium hydroxide, NaOH is preferably adopted in any one in the calcium bicarbonate and/or several combination arbitrarily.And the concentration of this alkaline absorbent can be 0.5% to 20%; Preferably 9% to 11%.
Absorb and next tail gas and/or waste gas by resin composite part 10, shown in arrow among Fig. 3 2103, just be guided this cooling and absorbing still 21, realize forcing cooling at this.Through forcing the tail gas and/or the waste gas of cooling, wherein main harmful components and composition odorous are in a liquid state and can be separated, and enter in the alkaline absorbent and be neutralized, do harmless treatment; And those force the incomplete portion gas of cooling, as Fig. 3 2104 shown in, the absorption treating device that then is guided next stage further processes.
As Fig. 2 and shown in Figure 4, tail gas absorption treating device 20 also includes after this absorption still 21, and sprays still 22 with it with the absorption that pipe method is connected.Spray equipment 2202 and filler device 2201 are set at more than the top of this absorption spray still 22.Force the incomplete portion gas of cooling to be led to and absorb in the spray still 22, form reverse experience from the bottom of spray still with the spray liquid body that the spray equipment 2202 that is arranged on top is sprayed, with time and chance that increase is in contact with one another, can more fully harmful components in the gas and composition odorous be dissolved in the spray liquid.
Meanwhile also be provided with the filler device 2201 that is positioned at the middle part.It can be to adopt various suitable dense material to be filled.Can be the object that the stable chemical performance material is made, can the adhesion section spray liquid on its surface to enlarge chance in up processed tail gas.The pottery system small articles of for example often using.Certainly also can adopt other materials such as plastics, stainless steel etc.
Filling device district but be not limited thereto such as after spray equipment 2202, can arrange the material with good adsorption performance.For example be the active carbon that obtains easily on the market, or any analog that other is suitable for.Self-evident, it can be regularly and/or does to change to upgrade in good time.
Absorb spray still 22 and also be equipped with the pump installation 2203 that can make the spray liquid that absorbs in the spray still 22 make top-down shuttling movement.As shown in Figure 4, can handle the absorption cleaning that tail gas waste gas is done to repeat as required.
In the tail gas absorption treating device 20, after absorbing spray still 22, showing as Fig. 2, is a back surge tank 23 that plays the storage effect.
The airborne release monitoring standard program that the so-called expert here drafts is meant any suitable trace routine that the professional is formulated according to the concrete regulations of rules of environmental protection, such as the air monitoring examination criteria.Comprised such as the allocation plan that adopts various detecting instrument instrument; The analysis of institute's test result stipulated out the handling procedure that adapts; And whether the disposed tail gas of finally making about now being stored in the 3rd zone meets the judgement that allows discharge standard.Among Fig. 2, represented this ' the airborne release monitoring standard program that the expert drafts ' with virtual mode with label 24.It can be the software kit of a control program, also can be an automatic control system that comprises executing agency.
According to actual disposition, discharging can be that manually-operated control is carried out with intermittent mode.
If what adopt in the allocation plan of ' the airborne release monitoring standard program that the expert drafts ' is at-once monitor detection system pattern, then also can be that the continuation mode with automatic control carries out.
Program 24 (Fig. 2) can be according to real-time result of determination, instruct a valve (see for details Fig. 2 2301) to change between opening and closing.That is to say, when real-time result of determination indicates the disposed tail gas that now is stored in the 3rd zone to meet the permission discharge standard, 2301 actions of 24 instructions of program valve, make it to switch to the enable possition, the disposed tail gas that is stored in like this in the 3rd zone enters blowdown stack 2302 emptyings by the valve of opening 2301 then.
And when real-time result of determination indicates the disposed tail gas that now is stored in the 3rd zone not meet the permission discharge standard, 2301 actions of 24 instructions of program valve switch to by the position valve 2301, so be stored in the disposed tail gas in the 3rd zone, will because of the emptying passage by by stopping emptying.
Then, program 24 can instruction unpacks sprays a by-pass valve control 2303 on UNICOM's pipeline between the still 22 at back surge tank 23 with absorbing, and makes it by by switching to conducting state; On this UNICOM's pipeline, (motor of this vacuum pump apparatus is after by-pass valve control 2303 is excited switched conductive at another vacuum pump apparatus that is disposed, immediately by program 24 instruction startup work) effect under, though so make this now be stored in the 3rd the zone in those passed through processing, but still the tail gas that is stored that can not allow compliance with emission standards is inhaled into again under the formed suction function of this pump installation and absorbs in the spray still 22, thereby carry out the harmless treatment step once more, even also program is returned to the absorption process method step 3 of tail gas, until allow compliance with emission standards.
Claims (7)
1. generate the absorption processing method of tail gas in the Chemical Manufacture, it includes following steps:
1,, and in this storage area, carry out and force cooling with exhaust gas guide to a storage area that produces in the course of reaction,
2, the part composition in this tail gas is transformed into liquid state in the cooling procedure, and this liquid parts is directed to a first area that fills absorbent, makes it carry out detoxification or detoxifcation processing in this first area,
3, with forcing the incomplete gas of cooling partly to be directed to a second area in this tail gas, in this zone, adopt the spray mode to absorb processing again,
4, this is absorbed the tail gas gas of handling again and partly directs into one the 3rd zone storage,
5, to the tail gas gas part that is stored in the 3rd zone, detect according to an airborne release monitoring standard program of drafting by the expert, whether meet the standard of this detection to determine it,
6,, then the tail gas gas that stores in the 3rd zone is partly carried out airborne release if determine to meet this examination criteria; If determine not meet this examination criteria, then the tail gas gas part that stores in the 3rd zone is back to above-mentioned third step again.
2. according to the absorption processing method that generates tail gas in the described Chemical Manufacture of claim 1, it is characterized in that wherein said absorbent is a kind of alkaline absorbent, this alkaline absorbent is a potassium hydroxide, NaOH, calcium hydroxide, a kind of in the calcium bicarbonate, its concentration is 1.8% to 12%.
3. the absorption processing method of a tail gas, this method are particularly suitable for the absorption of tail gas in the unsaturated polyester resin production process and handle, and it includes following steps:
1,, and in this storage area, carry out and force cooling with exhaust gas guide to a storage area that produces in the course of reaction,
2, the part acid ingredient in this tail gas is transformed into liquid state in the cooling procedure, and this liquid parts is directed to a first area that fills alkaline absorbent, makes it carry out neutralization reaction in this first area,
3, with forcing the incomplete gas of cooling partly to be directed to a second area in this tail gas, in this zone, adopt the spray mode to absorb processing again,
4, this is absorbed the tail gas gas of handling again and partly directs into one the 3rd zone storage,
5, to the tail gas gas part that is stored in the 3rd zone, detect according to an airborne release monitoring standard program of drafting by the expert, whether meet the standard of this detection to determine it,
6,, then the tail gas gas that stores in the 3rd zone is partly carried out airborne release if determine to meet this examination criteria; If determine not meet this examination criteria, then the tail gas gas part that stores in the 3rd zone is back to above-mentioned third step again.
4. according to the absorption processing method of the described tail gas of claim 3, it is characterized in that wherein said alkaline absorbent is a potassium hydroxide, NaOH, calcium hydroxide, a kind of in the calcium bicarbonate, its concentration is 1.8% to 12%
5. one kind has the process units that tail gas absorbs the unsaturated polyester (UP) of handling, it includes a reactor (11), fractionating column (1103) condenser (1104 that is linked in sequence and installs with this reactor top, 1105), and recipient (12), after this recipient, also has preceding surge tank (13) by pipeline UNICOM, and in the vavuum pump (1302) of this surge tank top configuration connection, it is characterized in that also being provided with one collects from the tail gas of this receiver (12) and vavuum pump (1302) and the cooling and absorbing still (21) of waste gas, after this absorption still is coupled, the top is equipped with an absorption spray still (22) of spray and filler device, then is a back surge tank (23) that plays the storage effect afterwards at this absorption spray still (22).
6. according to the described process units of claim 5 with unsaturated polyester (UP) of tail gas absorption processing, a condenser (2102) is equipped with at the top that it is characterized in that wherein said cooling and absorbing still (21), and also fills absorbent NaOH in the kettle of this cooling and absorbing still (21).
7. according to the described process units of claim 5, it is characterized in that wherein said absorption spray still (22) comprises that a spray equipment (2202) and one are set at this absorptions and spray filler device (2201) more than still (22) top with unsaturated polyester (UP) that tail gas absorb to handle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810095721XA CN101564601A (en) | 2008-04-23 | 2008-04-23 | Method for absorbing tail gas from chemical production and device for preparing polyester resin by using same |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA200810095721XA CN101564601A (en) | 2008-04-23 | 2008-04-23 | Method for absorbing tail gas from chemical production and device for preparing polyester resin by using same |
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| CN101564601A true CN101564601A (en) | 2009-10-28 |
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| CNA200810095721XA Pending CN101564601A (en) | 2008-04-23 | 2008-04-23 | Method for absorbing tail gas from chemical production and device for preparing polyester resin by using same |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585189A (en) * | 2011-12-30 | 2012-07-18 | 金发科技股份有限公司 | Method and device for processing off-gases in productive process of polyester or copolyester |
| CN102659967A (en) * | 2012-06-02 | 2012-09-12 | 悦康药业集团安徽天然制药有限公司 | Polyacrylic resin latex solution reaction device |
| CN103293274A (en) * | 2013-06-04 | 2013-09-11 | 贵州大学 | Coke oven gas impurity content detection pipeline system |
| CN104592542A (en) * | 2015-02-05 | 2015-05-06 | 齐鲁工业大学 | Clean production method of foaming buffer material from waste paper fiber |
| CN106474878A (en) * | 2015-08-26 | 2017-03-08 | 中国石油化工股份有限公司 | Acrylonitrile off-gas concentrate exhaust system and acrylonitrile off-gas to concentrate discharge method |
-
2008
- 2008-04-23 CN CNA200810095721XA patent/CN101564601A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585189A (en) * | 2011-12-30 | 2012-07-18 | 金发科技股份有限公司 | Method and device for processing off-gases in productive process of polyester or copolyester |
| CN102659967A (en) * | 2012-06-02 | 2012-09-12 | 悦康药业集团安徽天然制药有限公司 | Polyacrylic resin latex solution reaction device |
| CN102659967B (en) * | 2012-06-02 | 2014-07-09 | 悦康药业集团安徽天然制药有限公司 | Polyacrylic resin latex solution reaction device |
| CN103293274A (en) * | 2013-06-04 | 2013-09-11 | 贵州大学 | Coke oven gas impurity content detection pipeline system |
| CN104592542A (en) * | 2015-02-05 | 2015-05-06 | 齐鲁工业大学 | Clean production method of foaming buffer material from waste paper fiber |
| CN104592542B (en) * | 2015-02-05 | 2017-10-27 | 齐鲁工业大学 | A kind of method of waste paper fibre clean manufacturing foamed damping material |
| CN106474878A (en) * | 2015-08-26 | 2017-03-08 | 中国石油化工股份有限公司 | Acrylonitrile off-gas concentrate exhaust system and acrylonitrile off-gas to concentrate discharge method |
| CN106474878B (en) * | 2015-08-26 | 2024-03-26 | 中国石油化工股份有限公司 | Acrylonitrile tail gas centralized discharge system and acrylonitrile tail gas centralized discharge method |
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Application publication date: 20091028 |