CN104289254A - Nitrogen-modified catalyst applied to preparation of vinyl chloride and preparation method of nitrogen-modified catalyst - Google Patents
Nitrogen-modified catalyst applied to preparation of vinyl chloride and preparation method of nitrogen-modified catalyst Download PDFInfo
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- CN104289254A CN104289254A CN201410532152.6A CN201410532152A CN104289254A CN 104289254 A CN104289254 A CN 104289254A CN 201410532152 A CN201410532152 A CN 201410532152A CN 104289254 A CN104289254 A CN 104289254A
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Abstract
The invention discloses a nitrogen-modified catalyst applied to preparation of vinyl chloride and a preparation method of the nitrogen-modified catalyst. According to the nitrogen-modified catalyst, active carbon is used as a carrier, wherein the nitrogen-modified catalyst comprises a metal salt loaded compound and a nitrogen-containing compound; according to the total mass of the catalyst, the mass percentage of the metal salt compound is 0.01-10%, and the mass percentage of the nitrogen-containing compound is 0.01-10%. The metal salt compound is strontium salt or barium salt or mixture of the strontium salt and the barium salt; the nitrogen-containing compound is selected from at least one of guanidine hydrochloride, acetamidine hydrochloride, acrylamide, urea, methanesulfonamide and cyanoacetamide. The nitrogen-modified catalyst is applied to reaction of preparing vinyl chloride by catalytic cracking of 1,2-dichloroethane; not only is the cracking temperature reduced, and also the nitrogen-modified catalyst is high in conversion rate of 1,2-dichloroethane and selectivity of vinyl chloride, and is efficient, and has energy-saving and environment-friendly effects.
Description
Technical field
The present invention relates to the catalyst of synthesizing chloroethylene, be specifically related to a kind of nitrogen modified catalyst for the preparation of vinyl chloride and preparation method thereof.
Background technology
Vinyl chloride is a kind of very important chemical raw material, mainly for the production of Corvic.Polyvinyl chloride is one of the world five large-engineering plastics, is widely used in all trades and professions.The industrial preparative method of current VCM mainly contains acetylene hydrochlorination method and process for oxychlorination of ethylene.
Process for oxychlorination of ethylene is the state-of-the-art process of current suitability for industrialized production VCM, is divided into three steps: (1) direct chlorination, and namely ethene and chlorine reaction generate dichloroethanes; (2) dichloroethanes cracking, i.e. dichloroethanes at high temperature thermal cracking generation vinyl chloride and hydrogen chloride; (3) oxychlorination, namely hydrogen chloride and ethene, oxygen reaction generate vinyl chloride and water.
At present, the cracking of dichloroethanes mainly adopts the mode of thermal cracking, and at 450-550 DEG C, 1,2-dichloroethanes is cracked into vinyl chloride and hydrogen chloride and other accessory substance.This reaction process due to temperature higher, energy consumption is high, can produce a large amount of coking, make a big impact to production in course of reaction.Current main research work mainly concentrates on the improvement of thermal cracker and finds suitable catalyst reduction reaction temperature, reduces coking and accessory substance generation.The cracking reaction of dichloroethanes improves temperature, can improve reaction conversion ratio, but can cause the problems such as more serious coking, carbon distribution.Therefore, prepare efficient catalyst and reduce dichloroethanes cracking reaction temperature, improving the selective of reaction is the important content improving dichloroethanes cracking technology at present.
Summary of the invention
The object of the invention is, a kind of nitrogen modified catalyst for the preparation of vinyl chloride and preparation method thereof is provided, solve the too high problem such as coking, carbon distribution caused of dichloroethanes cracking reaction temperature in prior art.
The present invention is as follows for solving the problems of the technologies described above adopted technical scheme:
The invention discloses a kind of nitrogen modified catalyst for the preparation of vinyl chloride, described nitrogen modified catalyst take active carbon as carrier, carried metal salt compound and nitrogen-containing compound; In catalyst gross mass, the mass percent of described metal salt compound is 0.01 ~ 10%, and the mass percent of described nitrogen-containing compound is 0.01 ~ 10%.
Preferably, described absorbent charcoal carrier is selected from least one in coal mass active carbon, active fruit shell carbon or cocoanut active charcoal.
Preferably, described metal salt compound is the mixture of strontium salt or barium salt or strontium salt and barium salt, and described nitrogen-containing compound is selected from least one in guanidine hydrochloride, ethenylamidine hydrochloride salt, acrylamide, urea, methylsulfonamides, cyanoacetamide.Experimentally example, when metal salt compound be strontium chloride, nitrogen-containing compound be acrylamide time, obtained nitrogen modified catalyst has best catalytic activity.
Present invention also offers a kind of preparation method of the nitrogen modified catalyst for the preparation of vinyl chloride, the method comprises the steps:
Step 1, active carbon is for subsequent use as carrier after overpickling drying process;
Step 2, is dissolved in deionized water by metal salt compound and nitrogen-containing compound, is mixed with maceration extract; In described maceration extract, the concentration of metal salt compound is 0.01 ~ 20%, and the concentration of described nitrogen-containing compound is 0.01 ~ 20%; Described metal salt compound is the mixture of strontium salt or barium salt or strontium salt and barium salt, and described nitrogen-containing compound is selected from least one in guanidine hydrochloride, ethenylamidine hydrochloride salt, acrylamide, urea, methylsulfonamides, cyanoacetamide;
Step 3, floods the absorbent charcoal carrier after aforementioned processing 0.1 ~ 24 hour, then carries out activation process under nitrogen protection in the maceration extract of aforementioned preparation, obtained described nitrogen modified catalyst.
Further, in described step 1, the processing method of active carbon is: active carbon is carried out pickling, pickling time is 5 ~ 10 hours, and described Acidwash solution is the mixed solution of one or more in hydrochloric acid, sulfuric acid, nitric acid or phosphoric acid, and described acid concentration is 0.1 ~ 5.0mol/L; Active carbon is placed in 60 ~ 120 DEG C of dryings after pickling, drying time is 6 ~ 24 hours.
Further, in described step 3, active carbon carries out the condition of activation process and is: activate in 200 ~ 800 DEG C under nitrogen protection, soak time is 3 ~ 12 hours.
Present invention also offers described nitrogen modified catalyst at catalysis 1,2-dichloroethanes cracking for the application in vinyl chloride.Described nitrogen modified catalyst catalysis 1,2-dichloroethanes cracking for the process of vinyl chloride is: by pass into after 1,2-dichloroethane described nitrogen modified catalyst is housed fixed bed reactors in react, wherein reaction velocity is 20 ~ 150h
-1, the cracking temperature of 1,2-dichloroethanes is 200 ~ 350 DEG C.
Compared with prior art, the present invention has following beneficial effect: nitrogen modified catalyst preparation technology of the present invention is simple, cost is low; This catalyst not only reduces the cracking temperature of 1,2-dichloroethanes, and maintains the selective of 1,2-higher dichloroethanes conversion ratio and vinyl chloride, is a kind of efficient, energy-conservation, eco-friendly catalyst.
Detailed description of the invention
Technical scheme of the present invention is described in detail below by way of specific embodiment.Raw material used in the present invention and reagent are all commercially.
The pretreatment of active carbon: active carbon from coal 2mol/L hydrochloric acid solution is soaked 8 hours afterwash, then in 110 DEG C of dryings 10 hours.Described active carbon also can adopt active fruit shell carbon or cocoanut active charcoal, and Acidwash solution also can adopt the mixed liquor of sulfuric acid, nitric acid or phosphoric acid or several acid.
Embodiment 1
7.5g strontium chloride and 5g cyanoacetamide are dissolved in 150ml deionized water, are mixed with maceration extract.Added in prepared maceration extract by active carbon from coal after 80g HCl treatment and mix, dipping 2h, 650 DEG C of high temperature lead to nitrogen activation 6h, the nitrogen modified active carbon catalyst of obtained strontium Metal Supported.Normal pressure, reaction temperature be 260 DEG C, reaction velocity is 78h
-1under condition, 1,2-dichloroethanes pyrolysis reactivity is carried out to obtained nitrogen modified active carbon catalyst and investigates.1,2-dichloroethanes conversion ratio reaches more than 45%, and the selective of vinyl chloride reaches more than 95%.
Embodiment 2
7.5g strontium chloride and 5g cyanoacetamide are dissolved in 150ml deionized water, are mixed with maceration extract.Add the active carbon from coal 80g after with HCl treatment, mix, after dipping 6h, 650 DEG C of high temperature lead to nitrogen activation 6h, the nitrogen modified active carbon catalyst of obtained strontium Metal Supported.Normal pressure, reaction temperature be 220 DEG C, reaction velocity is 78h
-1under condition, 1,2-dichloroethanes pyrolysis reactivity is carried out to obtained nitrogen modified active carbon catalyst and investigates.1,2-dichloroethanes conversion ratio reaches more than 25%, and the selective of vinyl chloride reaches more than 95%.
Embodiment 3
5g strontium chloride and 5g acrylamide are dissolved in 100ml deionized water, are mixed with maceration extract.Add the active carbon from coal 50g after with HCl treatment, mix, after dipping 4h, 650 DEG C of high temperature lead to nitrogen activation 6h, the nitrogen modified active carbon catalyst of obtained strontium Metal Supported.Normal pressure, reaction temperature be 280 DEG C, reaction velocity is 78h
-1under condition, 1,2-dichloroethanes pyrolysis reactivity is carried out to obtained nitrogen modified active carbon catalyst and investigates.1,2-dichloroethanes conversion ratio reaches more than 80%, and the selective of vinyl chloride reaches more than 95%.
Embodiment 4
10g strontium chloride and 10g acrylamide are dissolved in 300ml deionized water, are mixed with maceration extract.Add the active carbon from coal 120g after with HCl treatment, mix, after dipping 6h, 650 DEG C of high temperature lead to nitrogen activation 8h, the nitrogen modified active carbon catalyst of obtained strontium Metal Supported.Normal pressure, reaction temperature be 300 DEG C, reaction velocity is 78h
-1under condition, 1,2-dichloroethanes pyrolysis reactivity is carried out to obtained nitrogen modified active carbon catalyst and investigates.1,2-dichloroethanes conversion ratio reaches more than 90%, and the selective of vinyl chloride reaches more than 95%.
Embodiment 5
6g strontium chloride and 6g urea are dissolved in 150ml deionized water, are mixed with maceration extract.Add the active carbon from coal 80g after with HCl treatment, mix, after dipping 2h, 650 DEG C of high temperature lead to nitrogen activation 6h, the nitrogen modified active carbon catalyst of obtained strontium Metal Supported.Normal pressure, reaction temperature be 260 DEG C, reaction velocity is 78h
-1under condition, 1,2-dichloroethanes pyrolysis reactivity is carried out to obtained nitrogen modified active carbon catalyst and investigates.1,2-dichloroethanes conversion ratio reaches more than 40%, and the selective of vinyl chloride reaches more than 95%.
Embodiment 6
10g strontium chloride and 10g methylsulfonamides are dissolved in 200ml deionized water, are mixed with maceration extract.Add the active carbon from coal 120g after with HCl treatment, mix, after dipping 4h, 650 DEG C of high temperature lead to nitrogen activation 6h, the nitrogen modified active carbon catalyst of obtained strontium Metal Supported.Normal pressure, reaction temperature be 220 DEG C, reaction velocity is 65h
-1under condition, 1,2-dichloroethanes pyrolysis reactivity is carried out to obtained nitrogen modified active carbon catalyst and investigates.1,2-dichloroethanes conversion ratio reaches more than 20%, and the selective of vinyl chloride reaches more than 95%.
Embodiment 7
8g strontium chloride and 10g B amidine hydrochloric acid salt are dissolved in 200ml deionized water, are mixed with maceration extract.Add the active carbon from coal 120g after with HCl treatment, mix, after dipping 12h, 700 DEG C of high temperature lead to nitrogen activation 6h, the nitrogen modified active carbon catalyst of obtained strontium Metal Supported.Normal pressure, reaction temperature be 260 DEG C, reaction velocity is 78h
-1under condition, 1,2-dichloroethanes pyrolysis reactivity is carried out to obtained nitrogen modified active carbon catalyst and investigates.1,2-dichloroethanes conversion ratio reaches more than 45%, and the selective of vinyl chloride reaches more than 95%.
Embodiment 8
5g barium chloride and 10g acrylamide are dissolved in 200ml deionized water, are mixed with maceration extract.Add the active carbon from coal 120g after with HCl treatment, mix, after dipping 12h, 700 DEG C of high temperature lead to nitrogen activation 6h, the nitrogen modified active carbon catalyst of obtained barium Metal Supported.Be 280 DEG C, reaction velocity 85h in normal pressure, reaction temperature
-1under condition, 1,2-dichloroethanes pyrolysis reactivity is carried out to obtained nitrogen modified active carbon catalyst and investigates.1,2-dichloroethanes conversion ratio reaches more than 75%, and the selective of vinyl chloride reaches more than 95%.
Embodiment 9
5g barium chloride and 10g guanidine hydrochloride are dissolved in 200ml deionized water, are mixed with maceration extract.Add the active carbon from coal 120g after with HCl treatment, mix, after dipping 6h, 700 DEG C of high temperature lead to nitrogen activation 6h, the nitrogen modified active carbon catalyst of obtained barium Metal Supported.Normal pressure, reaction temperature be 280 DEG C, reaction velocity is 85h
-1under condition, 1,2-dichloroethanes pyrolysis reactivity is carried out to obtained nitrogen modified active carbon catalyst and investigates.1,2-dichloroethanes conversion ratio reaches more than 70%, and the selective of vinyl chloride reaches more than 95%.
Embodiment 10
3g strontium chloride, 3g barium chloride and 6g cyanoacetamide are dissolved in 150ml deionized water, are mixed with maceration extract.Add the active carbon from coal 80g after with HCl treatment, mix, after dipping 4h, 700 DEG C of high temperature lead to nitrogen activation 6h, the nitrogen modified active carbon catalyst of obtained strontium and barium Metal Supported.Be 220 DEG C in normal pressure, reaction temperature, under reaction velocity is 65h-1 condition, 1,2-dichloroethanes pyrolysis reactivity carried out to obtained nitrogen modified active carbon catalyst and investigates.1,2-dichloroethanes conversion ratio reaches more than 20%, and the selective of vinyl chloride reaches more than 95%.
Embodiment 11
8g strontium chloride, 2g barium chloride and 10g acrylamide are dissolved in 200ml deionized water, are mixed with maceration extract.Add the active carbon from coal 100g after with HCl treatment, mix, after dipping 2h, 650 DEG C of high temperature lead to nitrogen activation 6h, the nitrogen modified active carbon catalyst of obtained strontium and barium Metal Supported.Be 260 DEG C in normal pressure, reaction temperature, under reaction velocity is 78h-1 condition, 1,2-dichloroethanes pyrolysis reactivity carried out to obtained nitrogen modified active carbon catalyst and investigates.1,2-dichloroethanes conversion ratio reaches more than 46%, and the selective of vinyl chloride reaches more than 95%.
Embodiment 12
3g strontium chloride, 6g barium chloride and 10g cyanoacetamide are dissolved in 200ml deionized water, are mixed with maceration extract.Add the active carbon from coal 100g after with HCl treatment, mix, after dipping 24h, 650 DEG C of high temperature lead to nitrogen activation 6h, the nitrogen modified active carbon catalyst of obtained strontium and barium Metal Supported.Be 200 DEG C in normal pressure, reaction temperature, under reaction velocity is 85h-1 condition, 1,2-dichloroethanes pyrolysis reactivity carried out to obtained nitrogen modified active carbon catalyst and investigates.1,2-dichloroethanes conversion ratio reaches more than 12%, and the selective of vinyl chloride reaches more than 95%.
Above are only part preferred embodiment of the present invention, the present invention is not limited in the content of embodiment.To those skilled in the art, can have various change and change in the concept of technical solution of the present invention, any change done and change, all within scope.
Claims (8)
1. for the preparation of a nitrogen modified catalyst for vinyl chloride, it is characterized in that: described nitrogen modified catalyst take active carbon as carrier, carried metal salt compound and nitrogen-containing compound; In catalyst gross mass, the mass percent of described metal salt compound is 0.01 ~ 10%, and the mass percent of described nitrogen-containing compound is 0.01 ~ 10%.
2., as claimed in claim 1 for the preparation of the nitrogen modified catalyst of vinyl chloride, it is characterized in that: described absorbent charcoal carrier is selected from least one in coal mass active carbon, active fruit shell carbon or cocoanut active charcoal.
3. as claimed in claim 1 for the preparation of the nitrogen modified catalyst of vinyl chloride, it is characterized in that: described metal salt compound is the mixture of strontium salt or barium salt or strontium salt and barium salt, described nitrogen-containing compound is selected from least one in guanidine hydrochloride, ethenylamidine hydrochloride salt, acrylamide, urea, methylsulfonamides, cyanoacetamide.
4. a preparation method for the nitrogen modified catalyst for the preparation of vinyl chloride according to claim 1, it is characterized in that, the method comprises the steps:
Step 1, active carbon is for subsequent use as carrier after overpickling drying process;
Step 2, is dissolved in deionized water by metal salt compound and nitrogen-containing compound, is mixed with maceration extract; In described maceration extract, the concentration of metal salt compound is 0.01 ~ 20%, and the concentration of described nitrogen-containing compound is 0.01 ~ 20%; Described metal salt compound is the mixture of strontium salt or barium salt or strontium salt and barium salt, and described nitrogen-containing compound is selected from least one in guanidine hydrochloride, ethenylamidine hydrochloride salt, acrylamide, urea, methylsulfonamides, cyanoacetamide;
Step 3, floods the absorbent charcoal carrier after aforementioned processing 0.1 ~ 24 hour, then carries out activation process under nitrogen protection in the maceration extract of aforementioned preparation, obtained described nitrogen modified catalyst.
5. the preparation method of nitrogen modified catalyst as claimed in claim 4, it is characterized in that, in described step 1, the processing method of active carbon is: active carbon is carried out pickling, pickling time is 5 ~ 10 hours, described Acidwash solution is the mixed solution of one or more in hydrochloric acid, sulfuric acid, nitric acid or phosphoric acid, and described acid concentration is 0.1 ~ 5.0mol/L; Active carbon is placed in 60 ~ 120 DEG C of dryings after pickling, drying time is 6 ~ 24 hours.
6. the preparation method of nitrogen modified catalyst as claimed in claim 4, is characterized in that, in described step 3, active carbon carries out the condition of activation process and is: activate in 200 ~ 800 DEG C under nitrogen protection, soak time is 3 ~ 12 hours.
7. the nitrogen modified catalyst described in an any one of claim 1-3 at catalysis 1,2-dichloroethanes cracking for the application in vinyl chloride.
8. nitrogen modified catalyst as claimed in claim 7 is in catalysis 1,2-dichloroethanes cracking is for the application in vinyl chloride, it is characterized in that: by pass into after 1,2-dichloroethane described nitrogen modified catalyst is housed fixed bed reactors in react, wherein reaction velocity is 20 ~ 150h-
1, the cracking temperature of 1,2-dichloroethanes is 200 ~ 350 DEG C.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999140A (en) * | 2017-11-29 | 2018-05-08 | 宁夏新龙蓝天科技股份有限公司 | A kind of preparation method for the catalyst without mercury for reducing vinyl chloride synthesis reaction temperature |
| CN111450860A (en) * | 2019-01-22 | 2020-07-28 | 中国科学院上海有机化学研究所 | Nitrogen-doped carbon catalyst based on biomass and preparation method and application thereof |
| CN111454122A (en) * | 2019-01-22 | 2020-07-28 | 中国科学院上海有机化学研究所 | Method for eliminating hydrogen chloride by catalytic cracking of chloralkane |
| CN111454118A (en) * | 2019-01-22 | 2020-07-28 | 中国科学院上海有机化学研究所 | Method for preparing chloroethylene by reacting acetylene with dichloroethane |
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| WO2022035384A1 (en) * | 2020-08-11 | 2022-02-17 | Scg Chemicals Co., Ltd. | Catalyst for catalytic cracking of ethylenedichloride to vinyl chloride |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766018A (en) * | 2012-06-26 | 2012-11-07 | 华东理工大学 | Chloroethylene preparation method by catalytic cracking by barium chloride catalyst |
| CN102921473A (en) * | 2012-09-28 | 2013-02-13 | 石河子大学 | Novel nitrogen-modified carbon catalyst carrier and preparation method and use thereof |
| CN103170371A (en) * | 2011-12-21 | 2013-06-26 | 冯良荣 | Catalyst for preparing chloroethylene by acetylene hydrochlorination |
| US20130204052A1 (en) * | 2011-10-26 | 2013-08-08 | Zhongke Yigong (Xiamen) Chemical Technology Co. Ltd. | Catalyst for preparing vinyl chloride, methods of preparation and application thereof |
-
2014
- 2014-10-11 CN CN201410532152.6A patent/CN104289254B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130204052A1 (en) * | 2011-10-26 | 2013-08-08 | Zhongke Yigong (Xiamen) Chemical Technology Co. Ltd. | Catalyst for preparing vinyl chloride, methods of preparation and application thereof |
| CN103170371A (en) * | 2011-12-21 | 2013-06-26 | 冯良荣 | Catalyst for preparing chloroethylene by acetylene hydrochlorination |
| CN102766018A (en) * | 2012-06-26 | 2012-11-07 | 华东理工大学 | Chloroethylene preparation method by catalytic cracking by barium chloride catalyst |
| CN102921473A (en) * | 2012-09-28 | 2013-02-13 | 石河子大学 | Novel nitrogen-modified carbon catalyst carrier and preparation method and use thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107999140A (en) * | 2017-11-29 | 2018-05-08 | 宁夏新龙蓝天科技股份有限公司 | A kind of preparation method for the catalyst without mercury for reducing vinyl chloride synthesis reaction temperature |
| CN111450860A (en) * | 2019-01-22 | 2020-07-28 | 中国科学院上海有机化学研究所 | Nitrogen-doped carbon catalyst based on biomass and preparation method and application thereof |
| CN111454122A (en) * | 2019-01-22 | 2020-07-28 | 中国科学院上海有机化学研究所 | Method for eliminating hydrogen chloride by catalytic cracking of chloralkane |
| CN111454118A (en) * | 2019-01-22 | 2020-07-28 | 中国科学院上海有机化学研究所 | Method for preparing chloroethylene by reacting acetylene with dichloroethane |
| CN111454122B (en) * | 2019-01-22 | 2021-09-03 | 中国科学院上海有机化学研究所 | Method for eliminating hydrogen chloride by catalytic cracking of chloralkane |
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