CN206160777U - Heat recycling system of catalytic cracking catalyst spray drying tail gas - Google Patents
Heat recycling system of catalytic cracking catalyst spray drying tail gas Download PDFInfo
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- CN206160777U CN206160777U CN201621154571.1U CN201621154571U CN206160777U CN 206160777 U CN206160777 U CN 206160777U CN 201621154571 U CN201621154571 U CN 201621154571U CN 206160777 U CN206160777 U CN 206160777U
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- tail gas
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- water inlet
- circulating water
- dried
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Abstract
The utility model relates to a heat recycling system of catalytic cracking catalyst spray drying tail gas, this system include online deashing heat exchanger and flash tank. The top of online deashing heat exchanger is equipped with the dry tail gas input port, and its bottom is equipped with the dry tail gas delivery outlet, and its one side is equipped with fresh water (FW) entry, fresh water (FW) export respectively, the top of flash tank is equipped with saturated steam outlet, and its bottom is equipped with the circulating water export, and its side is equipped with circulating water inlet, makeup water entry respectively, fresh water (FW) entry through circulating water pump with the circulating water export links to each other, fresh water (FW) export through the pipeline with circulating water inlet links to each other. The utility model discloses simple process can realize energy saving and emission reduction, increase economic benefits's purpose.
Description
Technical field
The utility model is related to a kind of waste heat recovery system of drying tail gas, more particularly to catalytic cracking catalyst is spray-dried
The heat reclaiming system of tail gas.
Background technology
Catalytic cracking catalyst spray drying tower, using relatively broad, is produced in the production process of catalyst in dry run
Not only temperature is relatively low for the raw tail gas that is dried in a large number, and containing a certain amount of dust and some other complicated composition in tail gas,
Therefore, develop it is a kind of can reasonably using dried tail gas waste heat technology, for industry energy-saving and emission-reduction and economic benefit
Have great importance.
Existing catalyst spray is dried tail gas disposal technique mainly two kinds, and one kind is directly washed by chilling tower
Cooling, another kind is directly to discharge tail gas, but these modes are primarily present following shortcoming：(1) it is general that tail gas discharge temperature is dried
At 150 ~ 180 DEG C or so, directly washing absorption is carried out using chilling tower, result in a large amount of wastes of heat, increased waste water
Discharge capacity；(2) it is dried in tail gas containing a certain amount of dust and acid gas, directly discharges, pollution is caused to environment.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of to be realized energy-saving and emission-reduction, increases economic benefit purpose
Catalytic cracking catalyst is spray-dried the heat reclaiming system of tail gas.
To solve the above problems, catalytic cracking catalyst described in the utility model is spray-dried the heat reuse system of tail gas
System, it is characterised in that：The system includes online cleaning heat exchanger and flash tank；It is provided with dry at the top of the online ash removal heat exchanger
Dry tail gas input port, its bottom is provided with and is dried tail gas delivery outlet, and its side is respectively equipped with technique water inlet, technique water out；Institute
State and be provided with the top of flash tank saturated vapor outlet, its bottom is provided with circulating water outlet, its side be respectively equipped with circulation water inlet,
Supplement water inlet；The technique water inlet is connected by water circulating pump with the circulating water outlet；The technique water out passes through
Pipeline is connected with the circulation water inlet.
The utility model has compared with prior art advantages below：
1st, the utility model adopts online ash removal heat exchanger, efficiently solves heat exchanger dust stratification, the problem of blocking, improves
Heat exchange efficiency.
2nd, the utility model application flash evaporation technology, it may be difficult to which the low temperature exhaust heat being dried in tail gas for utilizing carries out reuse, produces
Raw saturated vapor is even more a kind of energy of cleaning.
3rd, the utility model process is simple, is capable of achieving energy-saving and emission-reduction, increases the purpose of economic benefit.
Description of the drawings
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is structural representation of the present utility model.
In figure：1-online ash removal heat exchanger, 11-it is dried tail gas input port, 12-it is dried tail gas delivery outlet, 13-technique
Water inlet, 14-technique water out, 2-flash tank, 21-saturated vapor outlet, 22-circulating water outlet, 23-recirculated water enters
Mouthful, 24-supplement water inlet, 3-water circulating pump.
Specific embodiment
As shown in figure 1, catalytic cracking catalyst is spray-dried the heat reclaiming system of tail gas, the system includes online ash removal
Heat exchanger 1 and flash tank 2.
The top of online ash removal heat exchanger 1 is provided with and is dried tail gas input port 11, and its bottom is provided with and is dried tail gas delivery outlet 12,
Its side is respectively equipped with technique water inlet 13, technique water out 14；The top of flash tank 2 is provided with saturated vapor outlet 21, its bottom
Portion is provided with circulating water outlet 22, and its side is respectively equipped with circulation water inlet 23, supplements water inlet 24；Technique water inlet 13 is by following
Ring water pump 3 is connected with circulating water outlet 22；Technique water out 14 is connected by pipeline with circulation water inlet 23.
The catalytic cracking catalyst is spray-dried the reuse method of the heat reclaiming system of tail gas, comprises the following steps：
(1) the tail gas drying tail gas input port 11 that is dried from spray tower temperature for 150 ~ 180 DEG C is changed into online ash removal
In hot device 1, meanwhile, it is forced into Jing fresh water (FW)s after 0.4 ~ 0.5MPa from the fresh water (FW) that the temperature of water circulating pump 3 is 100 ~ 120 DEG C
Entrance 13 is entered in online ash removal heat exchanger 1；Being dried tail gas and fresh water (FW) carries out indirect counterflow heat exchange, respectively obtain temperature≤
120 DEG C of the fresh water (FW) for being dried tail gas and temperature >=130 DEG C；Temperature≤120 DEG C are dried tail gas drying tail gas delivery outlet 12
Being discharged into follow-up chilling tower carries out washing absorption；
(2) the fresh water (FW) Jing circulation water inlets 23 of temperature >=130 DEG C enter flash tank 2, in the condition that pressure is 0.14MPa
Under carry out flash distillation, and in flash process by supplement the continuous supplementation fresh water (FW) of water inlet 24 with maintain flash tank 2 liquid level and
Quantity of circulating water；The saturated vapor and flash distillation water of temperature≤110 DEG C are respectively obtained after flash distillation；
(3) the saturated vapor Jing saturated vapors outlet 21 of temperature≤110 DEG C is discharged into subsequent handling；Flash distillation water is from circulation
Water out 22 is discharged, and is entered in online ash removal heat exchanger 1 by technique water inlet 13 after water circulating pump 3 pressurizes.
Claims (1)
1. catalytic cracking catalyst is spray-dried the heat reclaiming system of tail gas, it is characterised in that：The system includes online ash removal
Heat exchanger（1）And flash tank（2）；The online ash removal heat exchanger（1）Top be provided with and be dried tail gas input port（11）, its bottom
It is provided with and is dried tail gas delivery outlet（12）, its side is respectively equipped with technique water inlet（13）, technique water out（14）；The flash tank
（2）Top be provided with saturated vapor outlet（21）, its bottom is provided with circulating water outlet（22）, its side is respectively equipped with recirculated water and enters
Mouthful（23）, supplement water inlet（24）；The technique water inlet（13）By water circulating pump（3）With the circulating water outlet（22）Phase
Even；The technique water out（14）By pipeline and the circulation water inlet（23）It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621154571.1U CN206160777U (en) | 2016-10-31 | 2016-10-31 | Heat recycling system of catalytic cracking catalyst spray drying tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621154571.1U CN206160777U (en) | 2016-10-31 | 2016-10-31 | Heat recycling system of catalytic cracking catalyst spray drying tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206160777U true CN206160777U (en) | 2017-05-10 |
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ID=58656047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621154571.1U Active CN206160777U (en) | 2016-10-31 | 2016-10-31 | Heat recycling system of catalytic cracking catalyst spray drying tail gas |
Country Status (1)
| Country | Link |
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| CN (1) | CN206160777U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020104A (en) * | 2016-10-31 | 2018-05-11 | 中国石油化工股份有限公司 | Catalytic cracking catalyst is spray-dried the heat reclaiming system and its method of tail gas |
-
2016
- 2016-10-31 CN CN201621154571.1U patent/CN206160777U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108020104A (en) * | 2016-10-31 | 2018-05-11 | 中国石油化工股份有限公司 | Catalytic cracking catalyst is spray-dried the heat reclaiming system and its method of tail gas |
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