CN109966864B - Organic waste gas absorbent and preparation method thereof - Google Patents
Organic waste gas absorbent and preparation method thereof Download PDFInfo
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- CN109966864B CN109966864B CN201910258650.9A CN201910258650A CN109966864B CN 109966864 B CN109966864 B CN 109966864B CN 201910258650 A CN201910258650 A CN 201910258650A CN 109966864 B CN109966864 B CN 109966864B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/14—Separation 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 absorption
- B01D53/1487—Removing organic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/14—Separation 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 absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/50—Combinations of absorbents
- B01D2252/504—Mixtures of two or more absorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7027—Aromatic hydrocarbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Gas Separation By Absorption (AREA)
Abstract
An organic waste gas absorbent and a preparation method thereof, wherein the organic waste gas absorbent comprises the following raw materials in percentage by mass: 0.5 to 10 percent of sodium citrate, 0.5 to 10 percent of dibutoxy ethyl phthalate, 0.5 to 10 percent of epoxidized soybean oil, 0.5 to 16 percent of sodium dodecyl benzene sulfonate, 0.5 to 10 percent of sodium hexametaphosphate, 0.1 to 10 percent of hyperbranched oligomer containing carboxyl, 0.05 to 5 percent of camphene, 0.05 to 3 percent of defoaming agent and the balance of water. The preparation method of the organic waste gas absorbent comprises the steps of weighing the raw materials according to the mass percentage, adding water, sodium citrate, sodium dodecyl sulfate and sodium hexametaphosphate into a stirring kettle, stirring at a low speed to dissolve, adding epoxidized soybean oil, dibutyl ethyl phthalate, carboxyl-containing hyperbranched oligomer and camphene, stirring at a high speed to disperse uniformly, adding a defoaming agent, stirring at a low speed to defoam, filtering and packaging to obtain the organic waste gas absorbent.
Description
Technical Field
The invention relates to an organic waste gas absorbent and a preparation method thereof.
Background
In the application of the paint, the printing ink and the adhesive, a large amount of organic waste gas containing Volatile Organic Compounds (VOCs) is generated, and the organic waste gas directly released or discharged causes serious pollution to the atmosphere, so that the coating, the printing ink and the adhesive become a hot problem in the current society. The variety of volatile organic compounds is various, the property difference is also great, and the current methods for treating the waste gas containing VOCs mainly comprise: adsorption method, absorption method, direct combustion method, regenerative combustion method, catalytic combustion method, rotary wheel adsorption concentration-combustion method, UV photocatalytic degradation method, condensation collection method, etc.
Wherein, the combustion method is only suitable for medium and high concentration, and the equipment cost is high and the operating cost is also high; the UV photocatalytic degradation method is only suitable for treating low-concentration low-flow waste gas, and for a system containing dust and polymer particles, the catalyst is easy to be poisoned and loses efficacy; the condensation collection method is only suitable for medium-high concentration waste gas; the activated carbon adsorption method is the most applied method at present, and at present, the operation mode of replacing the adsorbent instead of regenerating is mostly adopted, and the treatment cost is increased due to frequent replacement. The absorption method is suitable for treating medium-low concentration organic waste gas, the method has high operation flexibility, and dust-containing substances in the waste gas do not influence the removal efficiency of VOCs, but the regeneration and the repeated use of absorption liquid are one of the difficulties of the technology. There is a document reporting that a method of digesting and removing organic matters in an absorbent by a biological method is used, but the method requires a long digestion time and results in a large apparatus.
Chinese patent publication No. CN 109126447A in 2019, 01/04 discloses a method for treating volatile organic compounds by enhanced biological method, which comprises screening sophorolipid and trehalose tetralipid to compound, and preferably selecting the proportion of the two to extractThe method has high compatibilization effect on organic matters, synergistically improves the removal rate of hydrophobic waste gas cumene and ethylene by the bioreactor, can be completely degraded by microorganisms, and has the effects of no toxicity and no secondary pollution. The invention also falls into the category of biological methods. The absorption solvent comprises the following raw materials in parts by weight: fresh water hyacinth leaf treatment fluid: 0.2-10 parts of 0.8-1.2 mol/L potassium hydroxide solution: 3-8 parts of nano titanium dioxide: 0.005-0.01 parts of water: 80-86 parts, carbon tetrachloride: 7-15 parts. According to the patent document, the organic waste gas absorbing solvent is divided into two layers after the liquid level is stable, wherein the bottom layer is carbon tetrachloride, and the upper layer is a mixed solution. Compared with the three-layer liquid level in the prior art, the solvent is stable, and the absorption efficiency is not affected under the same liquid level height. The nanometer titanium dioxide as the photocatalytic material can degrade most organic pollutants into H through photocatalysis20 and CO2The nanometer titanium dioxide is firstly mixed with water to prepare turbid liquid, the turbid liquid is injected into the tank body and then suspended in the water, the turbid liquid is gradually attached to a nanometer filter screen at the bottom of the tank body under the influence of gravity, a 365nm ultraviolet lamp is arranged on the inner wall of the absorption tank, and the photocatalytic decomposition effect of the organic waste gas can be promoted by emitting light with specified frequency. The absorption method is suitable for treating the medium-low concentration organic waste gas, the operation flexibility of the method is high, the removal efficiency of VOCs is not influenced by dust-containing substances in the waste gas, but the regeneration and the repeated use of the absorption liquid are one of the difficulties of the technology.
Chinese patent document No. CN 108889066a discloses in 2018, 11/27, an organic waste gas processor using attapulgite adsorption and superparamagnetic field magnetic decomposition, which comprises a processor and a fan arranged inside the processor; an air outlet is formed in one side face of the processor, an air inlet face is formed in at least one side face of the processor, and an attapulgite molecular sieve, modified activated carbon and a superparamagnetic field magnetic decomposition plate are arranged on the air inlet face from outside to inside; the attapulgite molecular sieve is provided with a three-layer structure, which sequentially comprises a front layer fine mesh, a middle layer honeycomb flow-through layer and a rear layer fine mesh, wherein attapulgite particles are filled in the honeycomb flow-through layer, and the honeycomb flow-through layer is wrapped by the front layer fine mesh and the rear layer fine mesh. The waste gas processor combines the adsorption filtration of the attapulgite adsorption plate and the modified activated carbon adsorption plate with the magnetic decomposition filtration of the superparamagnetic field magnetic decomposition plate, the waste gas purification rate is higher, the attapulgite molecular sieve adopts attapulgite as an adsorbent and red pyroxene as a characterization agent, the hydrophobic modification technology of the attapulgite molecular sieve is easier and has better effect, and the selective adsorption capacity of the attapulgite molecular sieve on organic compounds can be improved. The activated carbon adsorption method is the most applied method at present, and at present, the operation mode of replacing the adsorbent instead of regenerating is mostly adopted, and the treatment cost is increased due to frequent replacement.
Chinese patent document No. CN 108889066a discloses a paint spray booth catalytic combustion exhaust gas treatment process in 2018, 11/27, which includes the following equipment: the air purification device comprises an air purification chamber, a dry filter, an activated carbon adsorption purification device, a catalytic combustion device, an adsorption fan, a desorption fan and a supplementary cooling fan, wherein the treatment process flow comprises the following steps: the method comprises the steps of introducing and filtering large-particle pollutants in the organic waste gas, adsorbing the pollutants in the organic waste gas, saturating an activated carbon adsorption device, catalytically combusting the organic waste gas and performing emergency treatment on the catalytically combusted organic waste gas. The treatment process adopts noble metal palladium and platinum carried on honeycomb ceramic as a catalyst, has the effects of low decomposition temperature, short desorption preheating time, low energy consumption and reaction rate improvement, but the catalytic combustion is only suitable for the concentration of VOCs (volatile organic compounds) of 100-2000 ppm. However, the combustion method is generally suitable only for medium-high concentrations, and has high equipment cost and high running cost.
Chinese patent document No. CN 108889066a discloses a UV light desorption device suitable for big amount of wind low concentration organic waste gas treatment in 2018, 11 months 27 days, including box, UV lamp house, adsorption tank and electrical apparatus case, the ventilating board is installed at inside income, export both ends of box, and the filter is installed in inserting one side of entrance point ventilating board, the UV lamp pipe is installed in the inside insertion of UV lamp house, and one side fixed mounting of UV lamp pipe has the closing cap, the inside opposite side of box inserts installs the adsorption tank, and the net has been seted up to the windward side of adsorption tank, the laminating in the back of box is equipped with the back shrouding, the preceding fixed mounting of box has electrical apparatus case and adsorption tank door, and adsorbs tank door and for the shrouding back door lock fix on the box. However, the UV photocatalytic degradation method is only suitable for treating low-concentration and low-flow waste gas, and the used catalyst is easy to be poisoned and lose efficacy for systems containing dust and polymer particles.
Chinese patent document No. CN 109173701a discloses a condensation, adsorption, catalytic oxidation apparatus and method for treating VOC containing water vapor in fuel oil in 2019, month 01 and day 11, wherein the apparatus comprises: VOCs conveying system, condensing system, adsorption system and catalytic oxidation system. The method comprises the following steps: (1) and (3) passing the VOCs containing water vapor in the high-concentration fuel oil through a condensing system, and performing gradient cooling through a first temperature cold field, a second temperature cold field and a third temperature cold field. (2) The normal temperature gas after the condensation gets into adsorption system, and adsorption system adopts two jars to adsorb the analytic mode in vacuum, further reduces organic waste gas concentration. (3) And (3) the gas with small gas concentration fluctuation passes through a catalytic oxidation system to catalytically oxidize light components in the low-concentration organic waste gas into CO2 and H2O, so that the standard emission of the fuel oil containing water vapor VOCs is completed.
Chinese patent document No. CN 108786719A discloses an adsorbing material for adsorbing VOCs and a preparation method thereof in 2018, 11/13.A, the adsorbing material consists of a molecular sieve adsorbent and a catalyst, the molecular sieve adsorbent is a ZSM-5/USY mixed molecular sieve, and the mass ratio of the ZSM-5 to the USY molecular sieve is 1-4: 1; the catalyst is Pt/BN and CeO2-ZrO2Mixture of Pt and CeO in the Pt/BN catalyst in an amount of 2% by mass of BN2-ZrO2CeO in catalyst2And ZrO2In a molar ratio of 7: 3; ZSM-5/USY mixed molecular sieve, Pt/BN and CeO2-ZrO2The mass ratio of the catalyst is 100: 0.5-3: 1-6. Preparing Pt/BN catalyst by dipping method, adding CeO2-ZrO2And (3) completely mixing the catalyst, the ZSM-5 and the USY molecular sieve, adding 100mL of deionized water, uniformly stirring, drying and roasting to obtain the adsorbing material.
Disclosure of Invention
The invention aims to provide an organic waste gas absorbent with low cost and a preparation method thereof, so as to overcome the defects in the prior art.
The organic waste gas absorbent designed according to the purpose is characterized by comprising the following raw materials in percentage by mass: 0.5 to 10 percent of sodium citrate, 0.5 to 10 percent of dibutoxy ethyl phthalate, 0.5 to 10 percent of epoxidized soybean oil, 0.5 to 16 percent of sodium dodecyl benzene sulfonate, 0.5 to 10 percent of sodium hexametaphosphate, 0.1 to 10 percent of hyperbranched oligomer containing carboxyl, 0.05 to 5 percent of camphene, 0.05 to 3 percent of defoaming agent and the balance of water.
Further, 0.6-8% of sodium citrate, 0.8-7% of dibutoxyethyl phthalate, 0.8-6% of epoxidized soybean oil, 0.7-14% of sodium dodecyl benzene sulfonate, 0.6-9% of sodium hexametaphosphate, 0.7-7% of hyperbranched oligomer containing carboxyl, 0.07-4.2% of camphene and 0.08-2.25% of defoaming agent.
Further, 1.2-5% of sodium citrate, 1.25-5% of dibutoxyethyl phthalate, 1.1-4% of epoxidized soybean oil, 1.5-5% of sodium dodecyl benzene sulfonate, 0.6-1.6% of sodium hexametaphosphate, 0.3-8% of hyperbranched oligomer containing carboxyl, 0.1-2.5% of camphene and 0.12-2% of defoaming agent.
Further, the hyperbranched oligomer containing carboxyl groups contains more than 8 carboxyl groups in each molecule.
The preparation method of the organic waste gas absorbent is characterized by comprising the following steps:
firstly, weighing raw materials according to mass percentage, then adding water, sodium citrate, sodium dodecyl sulfate and sodium hexametaphosphate into a stirring kettle, and stirring and dissolving at low speed to obtain a first mixed solution; wherein the stirring speed is 30-80 rpm;
adding epoxidized soybean oil, dibutyl ethyl phthalate, carboxyl-containing hyperbranched oligomer and camphene into the primary mixed solution, and uniformly stirring and dispersing at a high speed to obtain a second mixed solution; wherein the stirring speed is 600-1400 rpm;
adding a defoaming agent into the second mixed solution, stirring at a low speed for defoaming, filtering and packaging to obtain an organic waste gas absorbent; wherein the stirring speed is 30-80 rpm.
The camphene in the invention is from natural products, has good compatibility with cyclic organic matters, can partially self-polymerize to form an autopolymer, and the autopolymer is beneficial to transferring into a gel substance, so that the absorbent is regenerated, and the operation cost is reduced.
The organic waste gas absorbent obtained by adopting the technical scheme has the purification effect as follows: the absorption rate of the dimethylbenzene is up to 90 percent, the absorption rate of the methylbenzene is up to 90 percent, the absorption rate of the total VOCs is more than 90 percent,
in conclusion, the invention has the characteristics of low cost and good adsorption effect.
Detailed Description
The present invention will be further described with reference to the following examples.
First embodiment
An organic waste gas absorbent comprises the following raw materials in percentage by mass: 0.5 to 10 percent of sodium citrate, 0.5 to 10 percent of dibutoxy ethyl phthalate, 0.5 to 10 percent of epoxidized soybean oil, 0.5 to 16 percent of sodium dodecyl benzene sulfonate, 0.5 to 10 percent of sodium hexametaphosphate, 0.1 to 10 percent of hyperbranched oligomer containing carboxyl, 0.05 to 5 percent of camphene, 0.05 to 3 percent of defoaming agent and the balance of water.
The defoaming agent can be byk-077 defoaming agent.
Further, 0.6-8% of sodium citrate, 0.8-7% of dibutoxyethyl phthalate, 0.8-6% of epoxidized soybean oil, 0.7-14% of sodium dodecyl benzene sulfonate, 0.6-9% of sodium hexametaphosphate, 0.7-7% of hyperbranched oligomer containing carboxyl, 0.07-4.2% of camphene and 0.08-2.25% of defoaming agent.
Further, 1.2-5% of sodium citrate, 1.25-5% of dibutoxyethyl phthalate, 1.1-4% of epoxidized soybean oil, 1.5-5% of sodium dodecyl benzene sulfonate, 0.6-1.6% of sodium hexametaphosphate, 0.3-8% of hyperbranched oligomer containing carboxyl, 0.1-2.5% of camphene and 0.12-2% of defoaming agent.
Further, the hyperbranched oligomer containing carboxyl groups contains more than 8 carboxyl groups in each molecule.
Further, the hyperbranched oligomer containing carboxyl groups contains 16 carboxyl groups in each molecule.
A method for preparing an organic waste gas absorbent comprises the following steps:
firstly, weighing raw materials according to mass percentage, then adding water, sodium citrate, sodium dodecyl sulfate and sodium hexametaphosphate into a stirring kettle, and stirring and dissolving at low speed to obtain a first mixed solution; wherein the stirring speed is 30-80 rpm;
adding epoxidized soybean oil, dibutyl ethyl phthalate, carboxyl-containing hyperbranched oligomer and camphene into the primary mixed solution, and uniformly stirring and dispersing at a high speed to obtain a second mixed solution; wherein the stirring speed is 600-1400 rpm;
adding a defoaming agent into the second mixed solution, stirring at a low speed for defoaming, filtering and packaging to obtain an organic waste gas absorbent; wherein the stirring speed is 30-80 rpm.
In this embodiment, the organic waste gas absorbent includes the following raw materials by mass percent: 1% of sodium citrate, 2% of dibutoxyethyl phthalate, 1% of epoxidized soybean oil, 3% of sodium dodecyl benzene sulfonate, 1.2% of sodium hexametaphosphate, 1.5% of carboxyl-containing hyperbranched oligomer, 0.1% of camphene, 0.2% of defoaming agent and the balance of water.
When in use, the absorbent can be diluted into absorption liquid according to the proportion of 5-10 percent of the absorbent and the balance of water. In this example, the absorbent is 5% and the remainder is water.
When the spray absorption is carried out, the spray density of the absorption liquid is 11m3/(m2.h)
Practice tests show that the absorption liquid has the purification effect as follows: the absorption rate of the xylene is up to 93 percent, the absorption rate of the toluene is up to 90 percent, and the absorption rate of the total VOCs is more than 90 percent.
Second embodiment
In this embodiment, the organic waste gas absorbent includes the following raw materials by mass percent: 1.2 percent of sodium citrate, 1.5 percent of dibutoxyethyl phthalate, 2 percent of epoxidized soybean oil, 2 percent of sodium dodecyl benzene sulfonate, 0.8 percent of sodium hexametaphosphate, 0.5 percent of hyperbranched oligomer containing carboxyl, 0.2 percent of camphene, 0.5 percent of defoaming agent and the balance of water.
When in use, the absorbent can be diluted into absorption liquid according to the proportion of 8 percent of the absorbent and 92 percent of water for use.
When the spray absorption is carried out, the spray density of the absorption liquid is 10m3/(m2.h)
Practice tests show that the absorption liquid has the purification effect as follows: the absorption rate of the p-xylene is as high as 92%, the absorption rate of the p-toluene is as high as 90%, and the absorption rate of the total VOCs is more than 91%.
The rest of the parts which are not described in the first embodiment are not described in detail.
Third embodiment
In this embodiment, the organic waste gas absorbent includes the following raw materials by mass percent: 1.5 percent of sodium citrate, 1.6 percent of dibutoxyethyl phthalate, 1.8 percent of epoxidized soybean oil, 2.5 percent of sodium dodecyl benzene sulfonate, 1.1 percent of sodium hexametaphosphate, 1.4 percent of hyperbranched oligomer containing carboxyl, 0.3 percent of camphene, 0.5 percent of defoaming agent and the balance of water.
When in use, the absorbent can be diluted into absorption liquid according to the proportion of 10 percent of the absorbent and 90 percent of water for use.
When the spray absorption is carried out, the spray density of the absorption liquid is 13m3/(m2.h)
Practice tests show that the absorption liquid has the purification effect as follows: the absorption rate of the xylene is as high as 94%, the absorption rate of the toluene is as high as 91%, and the absorption rate of the total VOCs is more than 91%.
The rest of the parts which are not described in the first embodiment are not described in detail.
Fourth embodiment
In this embodiment, the organic waste gas absorbent includes the following raw materials by mass percent: 1.8 percent of sodium citrate, 1.6 percent of dibutoxyethyl phthalate, 1.8 percent of epoxidized soybean oil, 2.2 percent of sodium dodecyl benzene sulfonate, 1.1 percent of sodium hexametaphosphate, 1.3 percent of hyperbranched oligomer containing carboxyl, 0.4 percent of camphene, 0.4 percent of defoaming agent and the balance of water.
When in use, the absorbent can be diluted into absorption liquid according to the proportion of 6 percent of the absorbent and 94 percent of water for use.
In the process of spraying and absorbingThe spray density of the absorption liquid is 12m3/(m2.h)
Practice tests show that the absorption liquid has the purification effect as follows: the absorption rate of the xylene is as high as 92%, the absorption rate of the toluene is as high as 91%, and the absorption rate of the total VOCs is more than 91%.
The rest of the parts which are not described in the first embodiment are not described in detail.
Fifth embodiment
In this embodiment, the organic waste gas absorbent includes the following raw materials by mass percent: 2% of sodium citrate, 1% of dibutoxyethyl phthalate, 1.5% of epoxidized soybean oil, 2% of sodium dodecyl benzene sulfonate, 0.9% of sodium hexametaphosphate, 1% of carboxyl-containing hyperbranched oligomer, 0.2% of camphene, 0.3% of defoaming agent and the balance of water.
When in use, the absorbent can be diluted into absorption liquid according to the proportion of 5 percent of the absorbent and 95 percent of water for use.
When the spray absorption is carried out, the spray density of the absorption liquid is 9m3/(m2.h)
Practice tests show that the absorption liquid has the purification effect as follows: the absorption rate of the dimethylbenzene is up to 90%, the absorption rate of the methylbenzene is up to 90%, and the absorption rate of the total VOCs is more than 90%.
The rest of the parts which are not described in the first embodiment are not described in detail.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. An organic waste gas absorbent is characterized by comprising the following raw materials in percentage by mass: 0.5 to 10 percent of sodium citrate, 0.5 to 10 percent of dibutoxy ethyl phthalate, 0.5 to 10 percent of epoxidized soybean oil, 0.5 to 16 percent of sodium dodecyl benzene sulfonate, 0.5 to 10 percent of sodium hexametaphosphate, 0.1 to 10 percent of hyperbranched oligomer containing carboxyl, 0.05 to 5 percent of camphene, 0.05 to 3 percent of defoaming agent and the balance of water.
2. The organic waste gas absorbent as set forth in claim 1, wherein the sodium citrate is 0.6-8%, the dibutoxyethyl phthalate is 0.8-7%, the epoxidized soybean oil is 0.8-6%, the sodium dodecylbenzenesulfonate is 0.7-14%, the sodium hexametaphosphate is 0.6-9%, the carboxyl group-containing hyperbranched oligomer is 0.7-7%, the camphene is 0.07-4.2%, and the defoaming agent is 0.08-2.25%.
3. The organic waste gas absorbent as set forth in claim 1, wherein the sodium citrate is 1.2-5%, the dibutoxyethyl phthalate is 1.25-5%, the epoxidized soybean oil is 1.1-4%, the sodium dodecylbenzenesulfonate is 1.5-5%, the sodium hexametaphosphate is 0.6-1.6%, the carboxyl-containing hyperbranched oligomer is 0.3-8%, the camphene is 0.1-2.5%, and the defoaming agent is 0.12-2%.
4. The organic waste gas absorbent as set forth in claim 1, characterized in that the hyperbranched oligomer containing carboxyl groups contains more than 8 carboxyl groups per molecule.
5. A method for manufacturing an organic waste gas absorbent according to claim 1, comprising the steps of:
firstly, weighing raw materials according to mass percentage, then adding water, sodium citrate, sodium dodecyl sulfate and sodium hexametaphosphate into a stirring kettle, and stirring and dissolving at low speed to obtain a first mixed solution; wherein the stirring speed is 30-80 rpm;
adding epoxidized soybean oil, dibutyl ethyl phthalate, carboxyl-containing hyperbranched oligomer and camphene into the primary mixed solution, and uniformly stirring and dispersing at a high speed to obtain a second mixed solution; wherein the stirring speed is 600-1400 rpm;
adding a defoaming agent into the second mixed solution, stirring at a low speed for defoaming, filtering and packaging to obtain an organic waste gas absorbent; wherein the stirring speed is 30-80 rpm.
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| CN112657316A (en) * | 2020-12-03 | 2021-04-16 | 江苏双良新能源装备有限公司 | Absorbent for purifying waste gas in PVC glove industry and preparation method thereof |
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| CN106563346A (en) * | 2016-11-02 | 2017-04-19 | 千藤（南京）环保科技有限公司 | Reaction type VOCs absorbent |
| CN108014623A (en) * | 2017-12-19 | 2018-05-11 | 净典环保科技（上海）有限公司 | A kind of interior benzene homologues, TVOC bad smell removal detergent agent and preparation method thereof |
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| JPH01143801A (en) * | 1987-12-01 | 1989-06-06 | Nitto Denzai Kk | Disintegratable molded body |
| CN103007714A (en) * | 2012-12-13 | 2013-04-03 | 环境保护部华南环境科学研究所 | Low-foam organic waste gas absorbent, and preparation method and application thereof |
| CN106563346A (en) * | 2016-11-02 | 2017-04-19 | 千藤（南京）环保科技有限公司 | Reaction type VOCs absorbent |
| CN108014623A (en) * | 2017-12-19 | 2018-05-11 | 净典环保科技（上海）有限公司 | A kind of interior benzene homologues, TVOC bad smell removal detergent agent and preparation method thereof |
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Effective date of registration: 20210409 Address after: Cards 437, 438 and 439, floor 4, building 10, Jinhui Industrial Park, 27 Xingye Road, Torch Development Zone, Zhongshan City, Guangdong Province, 528400 Patentee after: Guangdong Kailing Ecological Environment Technology Co.,Ltd. Address before: Card 514 and 516, 5th floor, building 10, Jinhui Industrial Park, 27 Xingye Road, Torch Development Zone, Zhongshan City, Guangdong Province, 528400 Patentee before: ZHONGSHAN KAILING TECHNOLOGY Co.,Ltd. |