CN106914099A - Can on-line regeneration absorption material thermoplastic resin sand coremaking exhaust gas purifying method - Google Patents

Can on-line regeneration absorption material thermoplastic resin sand coremaking exhaust gas purifying method Download PDF

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Publication number
CN106914099A
CN106914099A CN201510991662.4A CN201510991662A CN106914099A CN 106914099 A CN106914099 A CN 106914099A CN 201510991662 A CN201510991662 A CN 201510991662A CN 106914099 A CN106914099 A CN 106914099A
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CN
China
Prior art keywords
waste gas
gas
exhaust gas
thermoplastic resin
coremaking
Prior art date
Application number
CN201510991662.4A
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Chinese (zh)
Inventor
李庆春
许志庆
许志伟
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无锡红旗除尘设备有限公司
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Application filed by 无锡红旗除尘设备有限公司 filed Critical 无锡红旗除尘设备有限公司
Priority to CN201510991662.4A priority Critical patent/CN106914099A/en
Publication of CN106914099A publication Critical patent/CN106914099A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/06Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/70Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/40Further details for adsorption processes and devices
    • B01D2259/40083Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B01D2259/40088Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
    • B01D2259/4009Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/40Further details for adsorption processes and devices
    • B01D2259/402Further details for adsorption processes and devices using two beds

Abstract

The present invention relates to it is a kind of can on-line regeneration absorption material thermoplastic resin sand coremaking exhaust gas purifying method, comprise the following steps:The first step:Gas sampling;Second step, to being dusted in waste gas;3rd step, the waste gas that system will be trapped sends into the greasy dirt and dust that are gone in removing exhaust gas in waste gas filter after being mixed into powder by hard airduct;4th step, the alternate cycles operation of absorption/on-line regeneration.The present invention will effectively trap organic exhaust gas, oiliness thing and dust that the coremaking of thermoplastic resin sand is produced in coremaking workshop coremaking machine operation etc.;And trap waste gas during to waste gas in dust, filtration treatment, using adsorbent absorption waste gas in organic matter, and adsorbent equipment timing is regenerated online, exhaust gas purifying treatment system reliability of operation and stability effectively are ensure that, while also eliminate or reducing occupational hazard and the pollution to environment that flue dust in the core making machine production process of thermoplastic resin sand coremaking workshop is caused.

Description

Can on-line regeneration absorption material thermoplastic resin sand coremaking exhaust gas purifying method

Technical field

The present invention relates to post health and field of Environment Protection, more specifically to can on-line regeneration absorption material thermoplastic resin sand coremaking exhaust gas purifying method.

Background technology

With the development of foundry engieering, organic binder bond moulding, the core-making techniques such as hot box, cold-box, shell core and resin self-setting sand technique are widely used, the organic substances such as aldehydes, phenols, the amine for producing free generation or decomposition in organic binder bond application process, it is mixed in air and forms organic exhaust gas, environmental pollution is not only caused, and has injured the healthy of people.Therefore, the Organic Waste Gas Pollution in Foundry Production has turned into one of industry focus of attention problem.Economic, effective method is taken to solve the problems, such as the Organic Waste Gas Pollution in Foundry Production, the Ecological Civilization Construction to casting industry sustainable development and China has important practical significance.

Organic exhaust gas are mainly derived from organic substance and the organic adhesive formulations such as the aldehyde, the phenol that are separated out from organic binder bond middle reaches in Foundry Production(Core)Sand decomposites the organic substance for coming in casting process.When such as using shell core technique, the gases such as phenol, formaldehyde can be produced in shell processed and casting process;During using triethylamine cold core box core process, phenol, formaldehyde and Triethylamine gas can be produced in coremaking and casting process;During using hot-box core making process, the gases such as ureaformaldehyde, formaldehyde, hydrogen cyanide can be produced in coremaking and casting process.These organic gas and air have been mixed to form the organic exhaust gas of foundry.Formaldehyde has stimulation to respiratory mucosa, and long-term chronic stimulates can cause mucous membrane congested, induce respiratory inflammation.Phenol has strong corrosiveness to skin, mucous membrane, can suppress the nervous centralis of people, damages the Liver and kidney function of people.Triethylamine has strong impulse, corrosion oral cavity, esophagus to the respiratory tract of people, or even causes pulmonary edema and cause death, and being contacted with skin can cause chemical burn.As can be seen here, the organic exhaust gas for being produced in Foundry Production not only pollute environment, and seriously damage the healthy of people.

Organic concentration is low in the organic exhaust gas that foundry produces, and foundry enterprise is not enough to the environment caused by it and personal injury understanding.At present, the improvement containing triethylamine organic exhaust gas that foundry produces for cold core coremaking is it has been reported that one is, by phosphoric acid spray-absorption method treatment waste gas containing triethylamine, to reach discharge standard, but the waste water containing amine salt is generated in the process, and secondary pollution can be caused to environment Ru untreated.Two is to process waste gas containing triethylamine using impulse electric corona method, it is currently under the laboratory research stage, and to the governing problem containing other compositions organic exhaust gas that foundry produces, relevant report being yet there are no, foundry's Organic Waste Gas Pollution control is just at the early-stage.

However, in industries such as oil, chemical industry, printings, to VOCs treatment existing diversified economy, effective method.But, because casting industry organic exhaust gas organic concentration is low, the features such as gas production is few, it is difficult to directly directly indiscriminately imitate the organic exhaust gas method of above-mentioned every profession and trade use.

The content of the invention

Present invention seek to address that drawbacks described above, there is provided it is a kind of can on-line regeneration absorption material thermoplastic resin sand coremaking exhaust gas purifying method.

In order to overcome defect present in background technology, the technical solution adopted for the present invention to solve the technical problems to be:It is a kind of can on-line regeneration absorption material thermoplastic resin sand coremaking exhaust gas purifying method, comprise the following steps:

The first step:Gas sampling,

It is specifically:Waste gas fume trap cover is set on each generation waste gas point of thermoplastic resin sand coremaking workshop core making machine operation area, and hand operated air volume regulating valve and pipeline switching valve are provided with the hard airduct of each branch road and the waste gas of operation area generation is effectively trapped;

Second step, to being dusted in waste gas,

It is specifically:A set of dusting device electrically connected with system automatic control system is set on hard airduct, and the part includes:Source of the gas valve group, quantitative powder transmitter, powder carry pipeline and the mixing arrangement that dusts etc. are sent using compressed air gas source, powder, to being mixed into powder in the waste gas that traps, for adsorbing the mist of oil contained in waste gas etc emplastic, it is to avoid hard airduct and waste gas filter inwall knot putty dirt;

3rd step, the waste gas that system will be trapped sends into the greasy dirt and dust that are gone in removing exhaust gas in waste gas filter after being mixed into powder by hard airduct;

4th step, the alternate cycles operation of absorption/on-line regeneration,

It is specifically:Imported by turns successively in waste gas A adsorbent equipments or B adsorbent equipments again by the waste gas of filtration, purification, the organic matter in waste gas is absorbed by adsorbent, pure air after purified treatment is entered in air again by blower fan, according to content of organics situation in waste gas, waste gas A adsorbent equipments or B adsorbent equipments carry out adsorption operation/regeneration operation and switch according to certain circulation time, by opening steam, dry air, heat-exchange device, pipeline switching valve door, and the device such as organic nuisance condensate recycling device, to realize the alternate cycles operation of waste gas A adsorbent equipments and B adsorbent equipment absorption/on-line regenerations, and by the associated pipe switch valve on pipeline according to process control procedure requirement ON/OFF.

In a preferred embodiment of the invention, one section of pneumatic hose is carried between waste gas point and waste gas fume trap cover.

The beneficial effects of the invention are as follows:The present invention will effectively trap thermoplastic resin sand coremaking(That is the coremaking of phenolic resin shell core sand or furane resins hot box process)Organic exhaust gas, oiliness thing and dust for being produced during coremaking machine operation in coremaking workshop etc.;And dusted in during trapping waste gas to waste gas, filtration treatment, using organic matter in adsorbent absorption waste gas, and adsorbent equipment timing is regenerated online, the absorption organic matter that is collected into of material is reclaimed using condensate recycling device(Or treatment), exhaust gas purifying treatment system reliability of operation and stability are effectively ensure that, while also eliminate or reducing occupational hazard and the pollution to environment that flue dust in the core making machine production process of thermoplastic resin sand coremaking workshop is caused.

Brief description of the drawings

The present invention is further described with reference to the accompanying drawings and examples.

Fig. 1 is structural representation of the invention.

Specific embodiment

As shown in Figure 1 it is a kind of can on-line regeneration absorption material thermoplastic resin sand coremaking exhaust gas purifying method, it is characterised in that:Comprise the following steps:

The first step:Gas sampling,

It is specifically:Each in thermoplastic resin sand coremaking workshop core making machine operation area produces setting waste gas fume trap cover 2 on waste gas point 1, and the waste gas that the 5 pairs of operation areas of hand operated air volume regulating valve 4 and pipeline switching valve door produce is provided with the hard airduct 6 of each branch road is effectively trapped, and according to production operation step ON/OFF bypass line switch valve 5, effectively reduce the total blast volume of system;

Second step, to being dusted in waste gas,

It is specifically:A set of dusting device electrically connected with system automatic control system 21 is set on hard airduct 6, and the part includes:Source of the gas valve group 9, quantitative powder transmitter 10, powder carry pipeline 20 and the mixing arrangement 7 etc. that dusts are sent using compressed air gas source 8, powder, to being mixed into powder in the waste gas 1 that traps, for adsorbing the mist of oil contained in waste gas 1 etc emplastic, it is to avoid hard airduct 6 and the inwall knot putty of waste gas filter 11 dirt;

3rd step, the waste gas 1 that system will be trapped sends into the greasy dirt and dust that are gone in removing exhaust gas in waste gas filter 11 after being mixed into powder by hard airduct 6;

4th step, the alternate cycles operation of absorption/on-line regeneration,

It is specifically:Imported by turns successively in waste gas A adsorbent equipments 17 or B adsorbent equipments 18 again by the waste gas of filtration, purification, the organic matter in waste gas 1 is absorbed by adsorbent, pure air after purified treatment is entered in air again by blower fan 16, according to content of organics situation in waste gas 1, waste gas A adsorbent equipments 17 or B adsorbent equipments 18 carry out adsorption operation/regeneration operation and switch according to certain circulation time, by opening steam 15, dry air 13, heat-exchange device 14, pipeline switching valve door 5, and the organic grade of nuisance condensate recycling device 19 device, to realize that waste gas A adsorbent equipments 17 and B adsorbent equipments 18 adsorb the/alternate cycles operation of on-line regeneration, and by the associated pipe switch valve 5 on pipeline according to process control procedure requirement ON/OFF.

One section of pneumatic hose 3 is carried between waste gas point 1 and waste gas fume trap cover 2, waste gas dust hood position can be arbitrarily adjusted, to realize the closely trapping to pollution sources(Reduce each point waste gas trapping air quantity).

Claims (2)

1. it is a kind of can on-line regeneration absorption material thermoplastic resin sand coremaking exhaust gas purifying method, it is characterised in that:Comprise the following steps:
The first step:Gas sampling,
It is specifically:Each in thermoplastic resin sand coremaking workshop core making machine operation area produces waste gas point(1)Upper setting waste gas fume trap cover(2), and in the hard airduct of each branch road(6)On be provided with hand operated air volume regulating valve(4)With pipeline switching valve door(5)The waste gas that operation area produces effectively is trapped;
Second step, to being dusted in waste gas,
It is specifically:In hard airduct(6)It is upper that a set of and system automatic control system is set(21)The dusting device of electrical connection, the part includes:Using compressed air gas source(8), powder send source of the gas valve group(9), quantitative powder transmitter(10), powder carry pipeline(20)And the mixing arrangement that dusts(7)Deng to the waste gas for trapping(1)In be mixed into powder, for adsorbing waste gas(1)In the mist of oil that contains etc emplastic, it is to avoid hard airduct(6)And waste gas filter(11)Inwall knot putty dirt;
3rd step, the waste gas that system will be trapped(1)After being mixed into powder, by hard airduct(6)Feeding waste gas filter(11)In the greasy dirt and dust that go in removing exhaust gas;
4th step, the alternate cycles operation of absorption/on-line regeneration,
It is specifically:Waste gas A adsorbent equipments are imported by turns successively again by the waste gas of filtration, purification(17)Or B adsorbent equipments(18)In, by adsorbent by waste gas(1)In organic matter absorb, the pure air after purified treatment pass through blower fan(16)Again enter in air, according to waste gas(1)Middle content of organics situation, waste gas A adsorbent equipments(17)Or B adsorbent equipments(18)Adsorption operation/regeneration operation is carried out according to certain circulation time to switch, by opening steam(15), dry air(13), heat-exchange device(14), pipeline switching valve door(5)And organic nuisance condensate recycling device(19)Deng device, to realize waste gas A adsorbent equipments(17)With B adsorbent equipments(18)The alternate cycles operation of absorption/on-line regeneration, and by the associated pipe switch valve on pipeline(5)According to process control procedure requirement ON/OFF.
2. according to claim 1 can on-line regeneration absorption material thermoplastic resin sand coremaking exhaust gas purifying method, it is characterised in that:The waste gas point(1)With waste gas fume trap cover(2)Between carry one section of pneumatic hose(3).
CN201510991662.4A 2015-12-28 2015-12-28 Can on-line regeneration absorption material thermoplastic resin sand coremaking exhaust gas purifying method CN106914099A (en)

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101222969A (en) * 2005-06-27 2008-07-16 系统工程服务有限公司 Method of purifying large quantity of exhaust gas containing dilute volatile hydrocarbon
CN102179116A (en) * 2011-05-05 2011-09-14 无锡市西漳环保设备有限公司 Smoke dedusting device provided with powder-adding device and used for pouring section and cooling section of resin-bonded sand mold
CN102225288A (en) * 2011-05-05 2011-10-26 无锡市西漳环保设备有限公司 Flue gas de-dusting process for phenolic sand modeling pouring section and cooling section
CN102814099A (en) * 2012-06-08 2012-12-12 深圳市科德环保科技有限公司 Device and method for purifying total volatile organic compounds
CN203043840U (en) * 2012-12-19 2013-07-10 威海航泰环保设备有限公司 Smoke treatment device of cremation machine
CN203565457U (en) * 2013-10-29 2014-04-30 佛山市蓝海石英石材有限公司 Organic exhaust gas processing device
CN103990351A (en) * 2014-05-31 2014-08-20 蔡博 Purification recovery device and technology for volatility organic waste gas
CN203790800U (en) * 2014-02-26 2014-08-27 深圳市美兆能源环境科技有限公司 Waste gas purification device with online regenerated adsorbent
CN104258688A (en) * 2014-10-15 2015-01-07 青岛路博宏业环保技术开发有限公司 Organic waste gas recovering system and technology

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101222969A (en) * 2005-06-27 2008-07-16 系统工程服务有限公司 Method of purifying large quantity of exhaust gas containing dilute volatile hydrocarbon
CN102179116A (en) * 2011-05-05 2011-09-14 无锡市西漳环保设备有限公司 Smoke dedusting device provided with powder-adding device and used for pouring section and cooling section of resin-bonded sand mold
CN102225288A (en) * 2011-05-05 2011-10-26 无锡市西漳环保设备有限公司 Flue gas de-dusting process for phenolic sand modeling pouring section and cooling section
CN102814099A (en) * 2012-06-08 2012-12-12 深圳市科德环保科技有限公司 Device and method for purifying total volatile organic compounds
CN203043840U (en) * 2012-12-19 2013-07-10 威海航泰环保设备有限公司 Smoke treatment device of cremation machine
CN203565457U (en) * 2013-10-29 2014-04-30 佛山市蓝海石英石材有限公司 Organic exhaust gas processing device
CN203790800U (en) * 2014-02-26 2014-08-27 深圳市美兆能源环境科技有限公司 Waste gas purification device with online regenerated adsorbent
CN103990351A (en) * 2014-05-31 2014-08-20 蔡博 Purification recovery device and technology for volatility organic waste gas
CN104258688A (en) * 2014-10-15 2015-01-07 青岛路博宏业环保技术开发有限公司 Organic waste gas recovering system and technology

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Application publication date: 20170704