CN102660321A - Diesel hydrogenation device and production process - Google Patents
Diesel hydrogenation device and production process Download PDFInfo
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- CN102660321A CN102660321A CN201210139179XA CN201210139179A CN102660321A CN 102660321 A CN102660321 A CN 102660321A CN 201210139179X A CN201210139179X A CN 201210139179XA CN 201210139179 A CN201210139179 A CN 201210139179A CN 102660321 A CN102660321 A CN 102660321A
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- hydrogen sulfide
- stripping tower
- sulfide stripping
- diesel
- tower top
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Abstract
The invention provides a diesel hydrogenation device. The device comprises a refined diesel heat exchanger, a hydrogen sulfide stripping tower, a hydrogen sulfide stripping tower top air cooler, a hydrogen sulfide stripping tower top rear cooler and a reflux tank, wherein the devices are connected with each other by virtue of a pipeline, a valve and a pressure pump; and the hydrogen sulfide stripping tower top air cooler is a split pipe-box air cooler. A diesel hydrogenation production process is characterized in that after being subjected to heat exchange in the refined diesel heat exchanger, the raw diesel enters the hydrogen sulfide stripping tower; 1.0MPa superheated steam is adopted for stripping at the bottom of the hydrogen sulfide stripping tower via the valve; the diesel gas at the hydrogen sulfide stripping tower top enters the reflux tank after being cooled by the hydrogen sulfide stripping tower top split pipe-box air cooler and the hydrogen sulfide stripping tower top rear cooler; and after being boosted by a product stripping tower top reflux pump, all liquid phases in the reflux tank carry out hydrogen sulfide stripping tower top reflux. The device has the following advantages: the device can not store ammonium salts under the condition of lower external temperature and can be used for saving the cost, increasing the treatment capacity and eliminating the accident potentials.
Description
Technical field
The present invention relates to a kind of diesel hydrotreating unit and production technique.
Background technology
The clean diesel of producing low-sulfur, low aromatic hydrocarbons, low density, high hexadecane value is the general trend of worldwide diesel production from now on.How to satisfy harsh day by day derv fuel oil standard, the clean diesel of producing compliance with environmental protection requirements will become oil Refining Technologies progressive important symbol.
The trend of diesel oil fuel quality upgrading mainly is the control to sulphur content.Diesel hydrotreating unit hydrogen sulfide stripping cat head actual load is littler than value, and existing overhead air cooler is a fixed tube sheet type, and winter, overhead air cooler then the bias current phenomenon can take place; Be hydrogen sulfide stripping tower raw oil composition and original design quite different, the part that refluxes is short-circuited, and causes the trim the top of column amount little; Hydro carbons is very few, and vapor phase is to too much, and air-cooler hot-fluid cooling load is superfluous; Thereby cause steam condensate to accumulate in the temperature lower, form the short circuit bias current, bias current causes air-cooler bobbin carriage two temperature difference to become big; Cause the air cooling distortion of arching upward, cause the air cooling tube bank to leak.
Thereby, being necessary to develop a kind of diesel hydrotreating unit and production technique, air-cooler generation bias current causes stockpiling in the air-cooler tube bank phenomenon of ammonium salt in the time of can effectively avoiding outside temperature low.
Summary of the invention
For addressing the above problem, the present invention aims to provide a kind of diesel hydrotreating unit and production technique, and air-cooler generation bias current causes stockpiling in the air-cooler tube bank phenomenon of ammonium salt in the time of can effectively avoiding outside temperature low.
A kind of diesel hydrotreating unit; Comprise refined diesel oil interchanger, hydrogen sulfide stripping tower, hydrogen sulfide stripping overhead air cooler, hydrogen sulfide stripper overhead aftercooler, return tank; Said apparatus is through pipeline, valve, the interrelated connection of pressure pump, and said hydrogen sulfide stripping overhead air cooler is a breakdown bobbin carriage air-cooler.
A kind of production technique of utilizing the diesel hydrotreating unit diesel oil hydrogenation, technology is following:
(1) raw oil after the heat exchange, gets into the hydrogen sulfide stripping tower in the refined diesel oil interchanger; ,
(2) adopt 1.0MPa superheated vapour stripping through valve at the bottom of the hydrogen sulfide stripping Tata;
(3) hydrogen sulfide stripping tower cat head oil gas after hydrogen sulfide stripping cat head breakdown bobbin carriage air-cooler and hydrogen sulfide stripper overhead aftercooler are cold to return tank;
(4) in the return tank liquid phase after product stripping tower top reflux pump boosts, all as hydrogen sulfide stripping tower trim the top of column.
Advantage of the present invention is: bias current can not take place in air-cooler when outside temperature is low, can not stockpile ammonium salt in the air-cooler tube bank, but cost saving increases treatment capacity, eliminates accident potential.
Description of drawings
Fig. 1 is structure of the present invention and technological process of production synoptic diagram.
Wherein, 1, refined diesel oil interchanger; 2, hydrogen sulfide stripping tower; 3, valve; 4, hydrogen sulfide stripping overhead air cooler; 5, hydrogen sulfide stripper overhead aftercooler; 6, return tank.7, reflux pump
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is specifically introduced as follows:
A kind of diesel hydrotreating unit; Comprise refined diesel oil interchanger 1, hydrogen sulfide stripping tower 2, hydrogen sulfide stripping overhead air cooler 4, hydrogen sulfide stripper overhead aftercooler 5, return tank 6; Said apparatus is through pipeline, valve, the interrelated connection of pressure pump, and said hydrogen sulfide stripping overhead air cooler is a breakdown bobbin carriage air-cooler.
A kind of production technique of utilizing the diesel hydrotreating unit diesel oil hydrogenation, technology is following:
1) raw oil after the heat exchange, gets into hydrogen sulfide stripping tower 2 in refined diesel oil interchanger 1,
2) adopt 1.0MPa superheated vapour stripping through valve 3 at the bottom of hydrogen sulfide stripping tower 2 towers,
3) hydrogen sulfide stripping tower 2 cat head oil gas after hydrogen sulfide stripping cat head breakdown bobbin carriage air-cooler 4 and hydrogen sulfide stripper overhead aftercooler 5 are cold to return tank 6;
4) in the return tank 6 liquid phase after product stripping tower top reflux pump 7 boosts, all as hydrogen sulfide stripping tower 2 trim the top of column.
Claims (2)
1. diesel hydrotreating unit; Comprise refined diesel oil interchanger, hydrogen sulfide stripping tower, hydrogen sulfide stripping overhead air cooler, hydrogen sulfide stripper overhead aftercooler, return tank; Said apparatus is through pipeline, valve, the interrelated connection of pressure pump; It is characterized in that said hydrogen sulfide stripping overhead air cooler is a breakdown bobbin carriage air-cooler.
2. production technique of utilizing the said diesel hydrotreating unit diesel oil hydrogenation of claim 1 is characterized in that technology is following:
(1) raw oil after the heat exchange, gets into the hydrogen sulfide stripping tower in the refined diesel oil interchanger; ,
(2) adopt 1.0MPa superheated vapour stripping through valve at the bottom of the hydrogen sulfide stripping Tata;
(3) hydrogen sulfide stripping tower cat head oil gas after hydrogen sulfide stripping cat head breakdown bobbin carriage air-cooler and hydrogen sulfide stripper overhead aftercooler are cold to return tank;
(4) in the return tank liquid phase after product stripping tower top reflux pump boosts, all as hydrogen sulfide stripping tower trim the top of column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210139179XA CN102660321A (en) | 2012-05-08 | 2012-05-08 | Diesel hydrogenation device and production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210139179XA CN102660321A (en) | 2012-05-08 | 2012-05-08 | Diesel hydrogenation device and production process |
Publications (1)
| Publication Number | Publication Date |
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| CN102660321A true CN102660321A (en) | 2012-09-12 |
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Family Applications (1)
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| CN201210139179XA Pending CN102660321A (en) | 2012-05-08 | 2012-05-08 | Diesel hydrogenation device and production process |
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| CN (1) | CN102660321A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104178217A (en) * | 2013-05-22 | 2014-12-03 | 中石化洛阳工程有限公司 | Liquid phase hydrogenation method and reactor thereof |
| CN109749781A (en) * | 2017-11-08 | 2019-05-14 | 中国石油化工股份有限公司 | A kind of hydrogenation plant stripper goes into operation steam stripped method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202576348U (en) * | 2012-05-08 | 2012-12-05 | 南京化工职业技术学院 | Diesel hydrogenation device |
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2012
- 2012-05-08 CN CN201210139179XA patent/CN102660321A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202576348U (en) * | 2012-05-08 | 2012-12-05 | 南京化工职业技术学院 | Diesel hydrogenation device |
Non-Patent Citations (2)
| Title |
|---|
| 《石油化工环境保护 》 19850331 李人伦; 廖南昌; 赵玉华 用气提塔取代水、碱洗-脱除加氢生成油中的硫化氢 全文 1-2 , 第3期 * |
| 李人伦; 廖南昌; 赵玉华: "用气提塔取代水、碱洗—脱除加氢生成油中的硫化氢", 《石油化工环境保护 》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104178217A (en) * | 2013-05-22 | 2014-12-03 | 中石化洛阳工程有限公司 | Liquid phase hydrogenation method and reactor thereof |
| CN109749781A (en) * | 2017-11-08 | 2019-05-14 | 中国石油化工股份有限公司 | A kind of hydrogenation plant stripper goes into operation steam stripped method |
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Application publication date: 20120912 |