CN100473714C - Quick cooling equipment for rapid reducing temperature of product from hydrotreating reaction of catalytic cracking gasoline - Google Patents
Quick cooling equipment for rapid reducing temperature of product from hydrotreating reaction of catalytic cracking gasoline Download PDFInfo
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- CN100473714C CN100473714C CNB2006100470638A CN200610047063A CN100473714C CN 100473714 C CN100473714 C CN 100473714C CN B2006100470638 A CNB2006100470638 A CN B2006100470638A CN 200610047063 A CN200610047063 A CN 200610047063A CN 100473714 C CN100473714 C CN 100473714C
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Abstract
This invention discloses equipment for rapidly cooling hydrogenation products of catalytic cracking gasoline. The equipment can rapidly lower the temperature of hot flow medium, and can control the entrance temperature of the next reactor. The equipment is composed of a rapid cooler, a quenching oil tank, a temperature reducer, a quenching oil pump and corresponding control valves. The quenching oil tank is connected with a stable gasoline pipe via a liquid level control valve, and sends gasoline via the quenching oil pump through three ways. The first way of gasoline flows to the temperature reducer through a flow control valve, and enters the rapid cooler through a Y-shaped temperature control valve. A high-temperature reaction product pipe is connected with the rapid cooler and Y-shaped temperature control valve. A raw material pipe is connected with the rapid cooler. The second way of gasoline flows to the quenching oil tank through a pressure control valve. The third way of gasoline flows to the reactor of the equipment as the quenching oil. The equipment ca rapidly cool the products of high-temperature reactions and prevent further reaction of H2S into sulfide thiophene (difficult to remove) at high temperatured and without the catalyst.
Description
Technical field:
The art of this patent relates to a kind of quenching apparatus of rapid reduction catalytic gasoline hydrogenation reaction product temperature, and can reduce the temperature in of hypomere reactor rapidly.
Background technology:
At present, in the catalytic gasoline hydrogenation modifying device, the cooling of reaction product is by carrying out heat exchange with the cold flow material through common interchanger.Owing to utilize common interchanger cooling to need certain residence time, be unfavorable for the fast cooling of high-temperature reaction product, and bad control when the reactor temperature runaway, so we have developed the quenching apparatus that can make the high-temperature reaction product fast cooling.Adopt the flow process of fast cooling, can prevent that the hydrogen sulfide that reacts generation from reacting once more, generates the sulfide thiophene that is difficult for removing under the condition of high temperature, disengaging catalyzer.
Summary of the invention:
In order to overcome the shortcoming that existing interchanger can not reduce stream temperature rapidly, the invention provides a kind of quenching apparatus of rapid reduction catalytic gasoline hydrogenation reaction product temperature, this quenching apparatus can reduce the temperature of logistics rapidly.
The technical solution adopted in the present invention is: high-temperature reaction product (430 ℃, 2.5MPa) is through vertical board-like quencher or single tube journey or monoshell journey quencher and feed gasoline heat exchange, high-temperature reaction product is cooled to rapidly below 300 ℃, and the temperature after the heat exchange is regulated by three-way control valve.When cooling back temperature did not reach processing requirement, employing was beaten the quenching oil mode and is reduced the high-temperature reaction product temperature.
With stable gasoline as quenching oil after the chilling oil pump boosts, by the liquid jet in the desuperheater, be sprayed on the tube side surface of hot-fluid in the desuperheater and gasification rapidly with tiny particle, thereby take away a large amount of heats, the hot-fluid temperature is reduced to rapidly below 300 ℃.The present invention is by quencher, the chilling oil tank, desuperheater, chilling oil pump and control corresponding valve are formed, it is characterized in that: chilling oil tank (4) communicates with the stable gasoline passage by level control valve (3), chilling oil tank (4) is sent through chilling oil pump (5), the oil product of sending is divided into three the tunnel, one the tunnel enters desuperheater (7) through flow control valve (6), enter quencher (1) by threeway temperature control valve (TCV) (2), the high-temperature reaction product passage connects with quencher (1) and threeway temperature control valve (TCV) (2), the feed gasoline passage with enter quencher (1) and link to each other, one the tunnel sends into chilling oil tank (4) through voltage-controlled valve (8) decompression, and the quenching oil that another road is used as the device reaction device enters reactor.Chilling oil tank (4) top is provided with pressure regulator valve (9).Chilling oil tank (4) bottom is provided with the branch bucket.Quencher (1) can be vertical or board-like or single tube journey or monoshell journey quencher, and quenching oil pipeline (12) inserts in the reaction product Trunk Line (11), and quenching oil pipeline (12) front end is equipped with cold nozzle (13).Liquid jet is equipped with in desuperheater (7) inside, guarantees that by it the hydrogenation reaction product temperature reduces rapidly, and the temperature in of control hypomere reactor, prevents that temperature of reactor from raising rapidly.
The beneficial effect of the art of this patent is to reduce the temperature of hot logistics medium rapidly, and can control the temperature in of hypomere reactor.
Description of drawings:
Below in conjunction with drawings and Examples the present invention is described in further details.
Fig. 1 is a structural principle synoptic diagram of the present invention.
Fig. 2 is the structural representation of quencher among the present invention.
Fig. 3 is the left view of Fig. 2.
1-quencher among Fig. 1,2-threeway temperature control valve (TCV), 3-level control valve, 4-chilling oil tank, 5-chilling oil pump, 6-flow control valve, 7-desuperheater, 8-voltage-controlled valve, 9-pressure regulator valve, 10-Liquid level adjusting valve.On behalf of flow, L, T representation temperature, P representative pressure, F represent liquid level among the figure.
11-reaction product Trunk Line among Fig. 2,12-quenching oil pipeline, the cold nozzle of 13-.
Embodiment:
With 200,000 tons of/year catalytic gasoline hydrogenation modifying devices is that example is described as follows:
Under the ordinary production situation in Fig. 1, high-temperature reaction product (430 ℃, 2.5MPa, 58800kg/h) is after reaction product quencher (1) and feed gasoline (40 ℃, 2.9MPa, 12500kg/h) heat exchange, be cooled to rapidly below 300 ℃, the medium temperature after the heat exchange is regulated by three-way control valve (2).
When reactor generation temperature runaway, the reaction product temperature can reach 460 ℃, and the temperature after the heat exchange is 330 ℃, at this moment adopts and beats the temperature that the quenching oil mode reduces reactor, high-temperature reaction product.
Stable gasoline (40 ℃, 0.85MPa, 20000kg/h) is sent into chilling oil tank (4) as quenching oil through level control valve (3) 0.3MPa that reduces pressure, send with 2.8MPa through chilling oil pump (5).The oil product of sending is divided into three the tunnel, when the cooled temperature of high-temperature reaction product is higher than 430 ℃, quenching oil (maximum 20000kg/h) is squeezed into desuperheater (7) through flow control valve (6) and is mixed with high-temperature reaction product, and high-temperature reaction product is cooled to rapidly below 300 ℃.When the reactor temperature runaway was 30 ℃, quenching oil (maximum 20000kg/h) was directly squeezed into reactor.This device is in stand-by state under the ordinary production situation, and quenching oil (20000kg/h) is sent into chilling oil tank (4) through voltage-controlled valve (8) 0.2MPa that reduces pressure.
Chilling oil tank (4) top is provided with pressure regulator valve (9), enters the nitrogen amount of chilling oil tank by adjusting, and the pressure of controlling the chilling oil tank remains on 0.2MPa.
Chilling oil tank (4) bottom is provided with the branch bucket, and to remove the water that carries in the stable gasoline, water level is just regulated by Liquid level adjusting valve (10).Each reaction unit all can be produced in chemical industry equipment factory among the present invention, gets final product with reference to accompanying drawing production and assembling.
Claims (4)
1, a kind of quenching apparatus of rapid reduction catalytic gasoline hydrogenation reaction product temperature, it by quencher, neglect cold oil jar, desuperheater, chilling oil pump and control corresponding valve and form; It is characterized in that: chilling oil tank (4) communicates with the stable gasoline passage by level control valve (3), the oil of chilling oil tank (4) is sent through chilling oil pump (5), the oil product of sending is divided into three the tunnel, one the tunnel enters desuperheater (7) through flow control valve (6), enter quencher (1) by threeway temperature control valve (TCV) (2), the high-temperature reaction product passage connects with quencher (1) and threeway temperature control valve (TCV) (2); The feed gasoline passage links to each other with quencher (1), and one the tunnel sends into chilling oil tank (4) through voltage-controlled valve (8) decompression, and the quenching oil that another road is used as the device reaction device enters reactor.
2, the quenching apparatus of a kind of rapid reduction catalytic gasoline hydrogenation reaction product temperature according to claim 1 is characterized in that: chilling oil tank (4) top is provided with pressure regulator valve (9).
3, the quenching apparatus of a kind of rapid reduction catalytic gasoline hydrogenation reaction product temperature according to claim 1 is characterized in that: chilling oil tank (4) bottom is provided with the branch bucket.
4, a kind of technology of rapid reduction catalytic gasoline hydrogenation reaction product temperature, it is characterized in that: reaction product is cooled to rapidly below 300 ℃ through quencher (1), medium temperature after the heat exchange is regulated by three-way control valve (2), when cooling back temperature did not reach processing requirement, employing was beaten the quenching oil mode and is reduced the high-temperature reaction product temperature; By quench pump (5) quenching oil is boosted to 2.0MPa; With 40 ℃, the stable gasoline of 0.85MPa as quenching oil through level control valve (3) 0.3MPa that reduces pressure, enter chilling oil tank (4), send with 2.0MPa through chilling oil pump (5), the oil product of sending is divided into three the tunnel, one the tunnel squeezes into desuperheater (7) through flow control valve (6), the anti-product of high temperature is cooled to rapidly below the 300C, and one the tunnel sends into chilling oil tank (4), the quenching oil that another road is used as the device reaction device through voltage-controlled valve (8) 0.2MPa that reduces pressure; Pressure regulator valve (9) by the setting of chilling oil tank (4) top, adjusting enters the nitrogen amount of chilling oil tank, the pressure of controlling the chilling oil tank remains on 0.2MPa, chilling oil tank (4) bottom is provided with the branch bucket, to remove the water that carries in the stable gasoline, water level is just regulated by ripple position variable valve (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100470638A CN100473714C (en) | 2006-06-28 | 2006-06-28 | Quick cooling equipment for rapid reducing temperature of product from hydrotreating reaction of catalytic cracking gasoline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100470638A CN100473714C (en) | 2006-06-28 | 2006-06-28 | Quick cooling equipment for rapid reducing temperature of product from hydrotreating reaction of catalytic cracking gasoline |
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| Publication Number | Publication Date |
|---|---|
| CN1916122A CN1916122A (en) | 2007-02-21 |
| CN100473714C true CN100473714C (en) | 2009-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006100470638A Active CN100473714C (en) | 2006-06-28 | 2006-06-28 | Quick cooling equipment for rapid reducing temperature of product from hydrotreating reaction of catalytic cracking gasoline |
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| CN102408925B (en) * | 2011-10-08 | 2014-07-09 | 中国石油化工股份有限公司 | High aromatic low-viscosity quenching and tempering oil for ethylene device |
| CN104888666A (en) * | 2015-05-07 | 2015-09-09 | 北京中科诚毅科技发展有限公司 | Temperature control method for slurry bed reactor, design method and application thereof |
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Owner name: LIAONING BRANCH OF CHINA HUANQIU CONTRACTING + ENG Free format text: FORMER NAME: FUSHUN BRANCH, CHINA PETROLEUM GROUP ENGINEERING DESIGN CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 113006 Liaoning province Fushun City River Road No. 16 Patentee after: Liaoning Branch,China Huanqiu Engineering Co., Ltd. Address before: 113006 Liaoning province Fushun City River Road No. 16 Patentee before: Fushun Branch, China Petroleum Group Engineering Design Co., Ltd. |