CN2214222Y - Two-section catalytic cracking reactor with uper and lower action reaction tube - Google Patents
Two-section catalytic cracking reactor with uper and lower action reaction tube Download PDFInfo
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- CN2214222Y CN2214222Y CN 94217873 CN94217873U CN2214222Y CN 2214222 Y CN2214222 Y CN 2214222Y CN 94217873 CN94217873 CN 94217873 CN 94217873 U CN94217873 U CN 94217873U CN 2214222 Y CN2214222 Y CN 2214222Y
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Abstract
The utility model relates to a new two-section catalytic cracking reactor with ascending and descending reaction pipes, which belongs to the structural improvement of the existing catalytic cracking reactor with a lift pipe. The purposes of enhancing the yield of light oil and reducing gas and coke yield are realized through adopting the catalytic cracking reactor in a two-section structure. The utility model is mainly composed of two-section ascending and descending reaction pipes and a gas-solid separator. Coked catalyst can be separated between sections; meanwhile, new regenerated catalyst is led into next section; oil gas continuously flows, so that the oil gas in each section can contact the catalyst with good selectivity and activity; the reaction temperature and the catalyst-oil ratio of each section can be controlled for optimizing conditions; therefore, the purposes of improving product distribution and enhancing the yield of the light oil are achieved.
Description
The utility model relates to a kind of novel two-stage catalytic cracking reactor with up-downgoing reaction tubes, and it is the improvement that belongs to existing catalytic cracking riser reactor structure.Gu it is by section gas between the catalyst cracker that adopts two-stage structure--separate the purpose that realizes improving yield of light oil, reduces gas and coke yield.It mainly is made up of two sections up-downgoing reaction tubes and gas-solid separator.
In petroleum processing engineering, catalytic cracking process is important processing means, also is the commercial run that has an economic benefit most.The end of the sixties, from molecular sieve catalyst come out and the riser catalytic cracking reactor that occurs so far, catalytic cracking technology does not still have basic technological breakthrough and progress, its overall structure remains continues to use original riser tube technology.Studies show that in recent years: existing riser reactor is for all components, be not all to be under optimal conditions, to react, the reaction of its middle and later periods is to carry out under the catalyzer condition that inactivation, selectivity have reduced greatly, so its reaction result is not to be optimal results yet; Because the gas-solid two contrary gravity field in the riser tube flow, and have the gravity landing, make to have poly-group of solid and gas-solid air-teturning mixed phenomenon in the riser tube, thereby make product distribution variation, gas increase.The eighties, some external oil companies have carried out many technological development researchs in succession around riser reactor, once developed a kind of two-stage catalytic cracking technology (ART) as Engelhard Corp, but this technology is actually at riser reactor and has added a cover raw materials pretreatment device, in order to remove part metals and the bituminous matter in the fcc raw material, do not obtain promoting in China.So the level that the pattern and the structure of existing riser reactor are improved to scheme the raising catalytic cracking technology is that domestic and international vast oil refining scientific worker explores and studies always.
The purpose of this utility model provides a kind of novel two-stage catalytic cracking reactor with up-downgoing reaction tubes with regard to being to avoid above-mentioned the deficiencies in the prior art part.It is by adopting two sections reactors with up-downgoing reaction tubes to realize intersegmental gas-solid separation (relatively improving selectivity of catalyst and activity), thereby improves the distribution of product and improve yield of light oil.It mainly is to be made of up reaction tubes, descending reaction tubes, gas-solid separator, its major technology characteristics are: the up-downgoing reaction tubes constitutes two sections U type reactors with import and export by two sections up reaction tubess and two sections descending reaction tubess respectively, the outlet of this two reactor all is connected with gas-solid separator respectively, the outlet that promptly constitutes one section up-downgoing reaction tubes is connected with the inlet of one section gas-solid separator, the cascaded structure that the outlet of one section gas-solid separator is connected with the inlet of two sections up-downgoing reaction tubess.
Accompanying drawing is the structural representation that the utlity model has positive U type reaction tubes.
The drawing of accompanying drawing is described as follows:
One section gas-solid separator of one section reaction tubes of 1 ┄, 2 ┄, 3 ┄ second-stage reaction pipes
Two sections gas-solid separators of 4 ┄, 5 ┄ T-valve, 16 ┄ T-valve 2
18 ┄ steam-ins, 7 ┄ steam-ins, 29 ┄ mixing tanks 1
The standby outlet of 10 ┄ mixing tank 2 11 ┄ communicating pipe 12 ┄
In order to realize above-mentioned purpose of the present utility model better, planner of the present utility model is also with the import design of the every section up-downgoing reaction tubes end at down pipe, and is connected with the mixing tank (9) (10) that enters reaction tubes for stock oil and catalyzer; The outlet of every section up-downgoing reaction tubes designs the end at ascension pipe, and is connected with the inlet of gas-solid separator; Perhaps with the end of the import of every section up-downgoing reaction tubes design, and be connected with the mixing tank (9) (10) that enters reaction tubes for stock oil and catalyzer at ascension pipe; The outlet of every section up-downgoing reaction tubes designs the end at down pipe, and is connected with the inlet of gas-solid separator;
The planner also is respectively arranged with steam-in (7) (8) in the bottom of every section U reaction tubes; Simultaneously, also be provided with T-valve (5), also be provided with T-valve (6), and be connected with communicating pipe (11) between two T-valve in the exit of one section gas-solid separator in the ingress of one section gas-solid separator (2).
Come enumeration constructional feature of the present utility model below in conjunction with drawings and Examples:
In actual design with in making, planner of the present utility model is designed to the reactor of two U types with two up-downgoing reaction tubess (these two U type reactors can be positive U type reaction tubess, also can be anti-U type reaction tubes), and the outlet of each U type reactor all is connected with gas-solid separator; All be provided with the mixing tank that supplies raw material and thermocatalyst to be mixed into reactor in the ingress of each U type reactor, all be provided with the steam-in that enters for loosening steam in the bottom of each U type reactor; Can flexible operating for the ease of this utility model, the planner also is provided with T-valve at the entrance and exit place of one section gas-solid separator, and between two T-valve, be provided with communicating pipe, so that realize that by the switch of controlling two T-valve whole reactor is the purpose of first stage reactor or two reactor.
Because what the utility model adopted is two sections, up-downgoing bonded lifting tubular reactor pattern, can be at the intersegmental catalyzer of isolating coking, feed new regenerated catalyst to next section simultaneously, oil gas is continuous flow then, make every section oil gas can both contact selectivity and activity catalyzer preferably, the temperature of reaction and the agent-oil ratio of every section of may command carry out condition optimizing again, improve the purpose that product distributes, improves yield of light oil thereby reach.
Claims (5)
1, two-stage catalytic cracking reactor with up-downgoing reaction tubes, it is by up reaction tubes, descending reaction tubes, gas-solid separator constitutes, it is characterized in that the up-downgoing reaction tubes constitutes two sections by two sections up reaction tubess and two sections descending reaction tubess respectively and has into, the U type reactor of outlet, the outlet of this two reactor all is connected with gas-solid separator respectively, the outlet that promptly constitutes one section up-downgoing reaction tubes (1) is connected with the inlet of one section gas-solid separator (2), the cascaded structure that the outlet of one section gas-solid separator (2) is connected with the inlet of two sections up-downgoing reaction tubess (3).
2, the two-stage catalytic cracking reactor with up-downgoing reaction tubes according to claim 1 is characterized in that the end of the import of every section up-downgoing reaction tubes at down pipe, and is connected with the mixing tank (9) that supplies stock oil and catalyzer to enter reaction tubes; The outlet of every section up-downgoing reaction tubes is at an end of ascension pipe, and is connected with the inlet of gas-solid separator.
3, the two-stage catalytic cracking reactor with up-downgoing reaction tubes according to claim 1 is characterized in that the end of the import of every section up-downgoing reaction tubes at ascension pipe, and is connected with the mixing tank (9) that supplies stock oil and catalyzer to enter reaction tubes; The outlet of every section up-downgoing reaction tubes is at an end of down pipe, and is connected with the inlet of gas-solid separator.
4, the two-stage catalytic cracking reactor with up-downgoing reaction tubes according to claim 1 is characterized in that the bottom of every section U reaction tubes is respectively arranged with steam-in (7) (8).
5, the two-stage catalytic cracking reactor with up-downgoing reaction tubes according to claim 1, it is characterized in that being provided with T-valve (5) in the ingress of one section gas-solid separator (2), also be provided with T-valve (6) in the exit of one section gas-solid separator, and be connected with communicating pipe (10) between two T-valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94217873 CN2214222Y (en) | 1994-08-02 | 1994-08-02 | Two-section catalytic cracking reactor with uper and lower action reaction tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94217873 CN2214222Y (en) | 1994-08-02 | 1994-08-02 | Two-section catalytic cracking reactor with uper and lower action reaction tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2214222Y true CN2214222Y (en) | 1995-12-06 |
Family
ID=33833204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94217873 Expired - Fee Related CN2214222Y (en) | 1994-08-02 | 1994-08-02 | Two-section catalytic cracking reactor with uper and lower action reaction tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2214222Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7153478B2 (en) | 2002-04-26 | 2006-12-26 | China Petroleum & Chemical Corporation | Downflow catalytic cracking reactor and its application |
| CN106590735A (en) * | 2015-10-15 | 2017-04-26 | 中国石油化工股份有限公司 | Method and an apparatus of catalytic cracking |
| CN112023837A (en) * | 2020-08-13 | 2020-12-04 | 中国科学院山西煤炭化学研究所 | Reaction device and method for synthesizing phthalic anhydride |
-
1994
- 1994-08-02 CN CN 94217873 patent/CN2214222Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7153478B2 (en) | 2002-04-26 | 2006-12-26 | China Petroleum & Chemical Corporation | Downflow catalytic cracking reactor and its application |
| CN106590735A (en) * | 2015-10-15 | 2017-04-26 | 中国石油化工股份有限公司 | Method and an apparatus of catalytic cracking |
| CN112023837A (en) * | 2020-08-13 | 2020-12-04 | 中国科学院山西煤炭化学研究所 | Reaction device and method for synthesizing phthalic anhydride |
| CN112023837B (en) * | 2020-08-13 | 2021-09-14 | 中国科学院山西煤炭化学研究所 | Reaction device and method for synthesizing phthalic anhydride |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |