CN218710085U - Utilize apparatus for producing of ethylene dichloride schizolysis production chloroethylene - Google Patents
Utilize apparatus for producing of ethylene dichloride schizolysis production chloroethylene Download PDFInfo
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- CN218710085U CN218710085U CN202223111451.1U CN202223111451U CN218710085U CN 218710085 U CN218710085 U CN 218710085U CN 202223111451 U CN202223111451 U CN 202223111451U CN 218710085 U CN218710085 U CN 218710085U
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- Prior art keywords
- cracking
- dichloroethane
- cracking furnace
- condenser
- furnace
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- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical group ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 title abstract description 8
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 title description 7
- 238000005336 cracking Methods 0.000 claims abstract description 75
- 238000010791 quenching Methods 0.000 claims abstract description 38
- SCYULBFZEHDVBN-UHFFFAOYSA-N 1,1-Dichloroethane Chemical compound CC(Cl)Cl SCYULBFZEHDVBN-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000007789 gas Substances 0.000 claims abstract description 27
- 230000000171 quenching effect Effects 0.000 claims abstract description 14
- 238000011084 recovery Methods 0.000 claims abstract description 11
- 238000002485 combustion reaction Methods 0.000 claims abstract description 4
- 230000005855 radiation Effects 0.000 claims abstract description 4
- 239000012495 reaction gas Substances 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 20
- 238000009833 condensation Methods 0.000 claims description 11
- 230000005494 condensation Effects 0.000 claims description 11
- 238000003860 storage Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 3
- 238000000197 pyrolysis Methods 0.000 abstract description 8
- 238000004939 coking Methods 0.000 abstract description 4
- 238000005235 decoking Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model relates to a chloroethylene production technical field, in particular to utilize apparatus for producing chloroethylene by dichloroethane schizolysis. The device comprises a cracking furnace and a quenching tower connected with the cracking furnace, wherein a condenser is connected to the quenching tower, a recovery heat exchanger is connected to the cracking furnace, the cracking furnace comprises combustion chambers of two rectangular devices, namely a convection section and a radiation section, a cracking gas outlet is formed in the lower part of the cracking furnace, and the recovery heat exchanger is connected with the upper part of the convection section and the cracking gas outlet of the cracking furnace and is used for exchanging heat of reaction gas in the upper part of the convection section and cracking gas at the cracking gas outlet; the condenser comprises a water-cooled condenser and a cryogenic condenser. The utility model discloses a EDC schizolysis makes accessory substance and coking reduce to minimumly, and pyrolysis gas energy is fully retrieved, reduces quench tower circulation volume, and the feed of pyrolysis furnace vapour phase alleviates the boiler tube coking, makes the decoking cycle prolong greatly.
Description
Technical Field
The utility model relates to a chloroethylene production technical field, in particular to utilize apparatus for producing chloroethylene by dichloroethane schizolysis.
Background
Vinyl chloride monomer is mostly prepared by a dichloroethane cracking method, almost 95% or more of EDC is used for producing vinyl chloride, and a cracking furnace is mostly used for producing vinyl chloride at present.
CN201376946Y relates to a cracking furnace, provides a cracking furnace for preparing chloroethylene by taking dichloroethane as a raw material, and comprises a cracking furnace body and a cracking pipe, wherein the cracking pipe is arranged in the cracking furnace body, the cracking pipe is a variable-diameter pipe, and the diameter of an inlet is smaller than that of an outlet. Adopt the utility model discloses a pyrolysis furnace preparation chloroethylene not only reaches energy-conserving effect, and the feed volume of pyrolysis furnace has also had great improvement simultaneously, and the quantity of fuel gas also descends to some extent, has both increased output and has reduced the energy consumption again. When C4 is used as fuel, the consumption of the fuel gas is reduced from the prior 110kg/t-vcm to 68kg/t-vcm, meanwhile, the yield of the chloroethylene is increased by about 15 percent, and the decoking period of the cracking furnace is prolonged from the original 4 to 5 months to 8 to 10 months. However, the cracking furnace needs to consume energy to cool the gas at the outlet of the cracking furnace, so as to realize cooling and condensation of vinyl chloride, and the production cost is increased.
Disclosure of Invention
Not enough to prior art exists, the utility model provides an utilize apparatus for producing of ethylene dichloride schizolysis to solve among the prior art pyrolysis gas cooling increase energy resource consumption of pyrolysis furnace, increase manufacturing cost's problem.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: a device for producing chloroethylene by using dichloroethane cracking comprises a cracking furnace and a quenching tower connected with the cracking furnace, wherein the quenching tower is connected with a condenser, the cracking furnace is connected with a recovery heat exchanger,
the cracking furnace comprises two combustion chambers of rectangular devices, namely a convection section and a radiation section, the lower part of the cracking furnace is provided with a cracking gas outlet, and the recovery heat exchanger is connected with the upper part of the convection section and the cracking gas outlet of the cracking furnace respectively and is used for exchanging heat between reaction gas in the upper part of the convection section and cracking gas at the cracking gas outlet;
the condenser comprises a water-cooled condenser and a cryogenic condenser.
The device further comprises a pure dichloroethane storage tank, a cracking furnace feed pump and a dichloroethane preheater, wherein the pure dichloroethane storage tank is connected with the cracking furnace feed pump, the cracking furnace feed pump is connected with the dichloroethane preheater, and the dichloroethane preheater is connected with the cracking furnace.
Furthermore, the bottom of quench tower is equipped with bottom material outlet, bottom material outlet is through quench tower circulating pump with the material delivery.
Furthermore, the top of quench tower is equipped with the export of top material, the export of top material is connected with water-cooled condenser.
Furthermore, be connected with quench tower condensation on the cryrogenic condenser and receive the groove, quench tower condensation receives the groove and is used for storing the dichloroethane liquid under the condensation.
Further, still be connected with HCl gas storage tank on the cryrogenic condenser.
The utility model relates to an utilize apparatus for producing of dichloroethane schizolysis production chloroethylene's apparatus for producing's beneficial effect is: the utility model discloses a EDC schizolysis makes accessory substance and coking reduce to minimumly, and pyrolysis gas energy is fully retrieved, reduces quench tower circulation volume, and the feed of pyrolysis furnace vapour phase alleviates the boiler tube coking, makes the decoking cycle prolong greatly.
Drawings
FIG. 1 is a diagram of an apparatus according to an embodiment of the present invention;
in the figure:
the system comprises a cracking furnace 1, a quench tower 2, a recovery heat exchanger 3, a quench tower cooler 4, a water-cooled condenser 5, a cryogenic condenser 6, a quench tower circulating pump 7, a quench tower condensation receiving tank 8, a dichloroethane storage tank 9, a cracking furnace feed pump 10, a dichloroethane preheater 11 and an HCl gas storage tank 12.
Detailed Description
The invention will be described in further detail with reference to the following detailed description and accompanying drawings:
example 1:
as shown in fig. 1, a production device for producing vinyl chloride by cracking dichloroethane comprises a cracking furnace 1, wherein the cracking furnace 1 comprises two combustion chambers of rectangular devices, namely a convection section and a radiation section, the lower part of the cracking furnace 1 is provided with a cracked gas outlet, EDC is divided into two feeds, uniform and accurate metering flow regulation is performed before the two feeds enter the cracking furnace 1, and each feed enters the top of the convection section so as to recover heat from flue gas of the cracking furnace 1; the gaseous feed from the vaporizer is forced through the thermal coil, where the EDC is superheated and thermally cracked. The cracking furnace 1 is connected with the quenching tower 2, the cracking gas passes through a recovery heat exchanger 3 before entering the quenching tower 2, and the recovery heat exchanger 3 is respectively connected with the upper part of the convection section of the cracking furnace 1 and a cracking gas outlet and is used for carrying out heat exchange on the reaction gas in the upper part of the convection section and the cracking gas at the cracking gas outlet; the two materials are finally combined together just after leaving the recovery heat exchanger 3 and enter the quenching tower 2 as one material. The recovery heat exchanger 3 is used for recovering high-temperature heat at the outlet of the cracking furnace 1, reducing the unit consumption of C4 and achieving the aim of energy conservation. The quenching tower 2 is a spray tower equipped with a plurality of spray nozzles, and the quenching tower circulating liquid cooled in the quenching tower cooler 4 is sprayed in the tower to effectively contact the gas and the liquid.
Be connected with the condenser on quench tower 2, the condenser includes water cooled condenser 5 and cryrogenic condenser 6. The top of quench tower 2 is equipped with the top material export, the top material export is connected with water cooled condenser 5. The bottom of quench tower 2 is equipped with bottom material outlet, bottom material outlet is seen off the material through quench tower circulating pump 7. And the cryogenic condenser 6 is connected with a quenching tower condensation receiving groove 8, and the quenching tower condensation receiving groove 8 is used for storing dichloroethane liquid under condensation.
The gaseous material that quench tower 2 top came out carries out the heat exchange to further divide into gas and two strands of liquid materials, and the bottom material of quench tower 2 directly gets into next unit from quench tower circulating pump 7 simultaneously, or two kinds of liquid mixes before quench tower cooler 4 and after, is when detecting relevant temperature indication its temperature regulation that carries out the material, gets into next unit again.
The device is characterized by further comprising a pure dichloroethane storage tank 9, a cracking furnace feed pump 10 and a dichloroethane preheater 11, wherein the pure dichloroethane storage tank 9 is connected with the cracking furnace feed pump 10, the cracking furnace feed pump 10 is connected with the dichloroethane preheater 11, and the dichloroethane preheater 11 is connected with the cracking furnace 1. And the cryogenic condenser 6 is also connected with an HCl gas storage tank 12.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (6)
1. The utility model provides an utilize apparatus for producing chloroethylene of dichloroethane schizolysis which characterized in that: comprises a cracking furnace and a quench tower connected with the cracking furnace, wherein the quench tower is connected with a condenser, the cracking furnace is connected with a recovery heat exchanger,
the cracking furnace comprises two combustion chambers of rectangular devices, namely a convection section and a radiation section, the lower part of the cracking furnace is provided with a cracking gas outlet, and the recovery heat exchanger is connected with the upper part of the convection section and the cracking gas outlet of the cracking furnace respectively and is used for exchanging heat between reaction gas in the upper part of the convection section and cracking gas at the cracking gas outlet;
the condenser comprises a water-cooled condenser and a cryogenic condenser.
2. The apparatus for producing vinyl chloride by cracking dichloroethane according to claim 1, wherein: the device is characterized by further comprising a pure dichloroethane storage tank, a cracking furnace feed pump and a dichloroethane preheater, wherein the pure dichloroethane storage tank is connected with the cracking furnace feed pump, the cracking furnace feed pump is connected with the dichloroethane preheater, and the dichloroethane preheater is connected with the cracking furnace.
3. The apparatus for producing vinyl chloride by cracking dichloroethane according to claim 1, wherein: the bottom of quench tower is equipped with bottom material outlet, bottom material outlet is seen off the material through the quench tower circulating pump.
4. The apparatus for producing vinyl chloride by cracking dichloroethane according to claim 1, wherein: the top of quench tower is equipped with the top material export, the top material export is connected with water-cooled condenser.
5. The apparatus for producing vinyl chloride by cracking dichloroethane according to claim 1, wherein: the deep cooling condenser is connected with a quenching tower condensation receiving groove, and the quenching tower condensation receiving groove is used for storing dichloroethane liquid under condensation.
6. The apparatus for producing vinyl chloride by cracking dichloroethane according to claim 1, wherein: and the cryogenic condenser is also connected with an HCl gas storage tank for storing condensed liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223111451.1U CN218710085U (en) | 2022-11-23 | 2022-11-23 | Utilize apparatus for producing of ethylene dichloride schizolysis production chloroethylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223111451.1U CN218710085U (en) | 2022-11-23 | 2022-11-23 | Utilize apparatus for producing of ethylene dichloride schizolysis production chloroethylene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218710085U true CN218710085U (en) | 2023-03-24 |
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ID=85623413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223111451.1U Active CN218710085U (en) | 2022-11-23 | 2022-11-23 | Utilize apparatus for producing of ethylene dichloride schizolysis production chloroethylene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218710085U (en) |
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2022
- 2022-11-23 CN CN202223111451.1U patent/CN218710085U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Room 1701, No. 28 Longcheng Road, Shibei District, Qingdao City, Shandong Province, 266000 Patentee after: Shandong Jierui Kaitai Technology Co.,Ltd. Country or region after: China Address before: Building 704, Building 3, 7080 Central Plaza, Shibei District, Qingdao, Shandong 266000 Patentee before: SHANDONG KAITAI TECHNOLOGY Co.,Ltd. Country or region before: China |