CN2438930Y - Upper intake lower outlet type double-pipe fast cool boiler with inlet protection structure and distributor - Google Patents
Upper intake lower outlet type double-pipe fast cool boiler with inlet protection structure and distributor Download PDFInfo
- Publication number
- CN2438930Y CN2438930Y CN 00251219 CN00251219U CN2438930Y CN 2438930 Y CN2438930 Y CN 2438930Y CN 00251219 CN00251219 CN 00251219 CN 00251219 U CN00251219 U CN 00251219U CN 2438930 Y CN2438930 Y CN 2438930Y
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- distributor
- inlet
- utility
- heat exchanging
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Abstract
The utility model discloses an upper intake and lower outlet type double-sleeve pipe fast cooling boiler with an inlet protecting structure and a distributor, which is composed of a cone inlet, heat exchange sleeve pipes, an oblate pipe and an outlet sealing head, wherein a distributor is arranged in the cone inlet, and protective short pipes are arranged on inlets of the heat exchanging sleeve pipes; the distributor is fixed on the inner wall of the cone inlet by a connecting bar; the protective short pipes are fixed on the inlet ends of the heat exchanging sleeve pipes. When high-temperature pyrolysis gas enters the utility model from the upper part and goes out of the utility model from the lower part, the inlets of the heat exchanging sleeve pipes can not generate local overheating phenomena so that the heat exchanging sleeve pipes have long service life, the pyrolysis gas can be uniformly distributed in each heat exchanging sleeve pipe, therefore the utility model reduces coking tendency, prolongs operation cycle, uses water power to remove coke without parking and has high operating rate is high.
Description
The utility model relates to an equipment in the cracking of ethylene technology, specifically a kind of upper intake lower outlet type double-sleeve quenching boiler with ingress protection structure and uniform device.
When existing large-scale pyrolysis furnace adopts the secondary chilling technique, it is enterprisingly to go out down that second quencher needs vertical placement, cracking gas, and the high-temperature region is in the upper end at this moment, low-temperature space is in the lower end, the cooling medium upper end is the mixture of saturated vapor and water, and steam quality is than bottom height, and thermal conductivity factor is little, the heat exchange weak effect, the local superheating phenomenon in upper end might appear in heat exchanger tube, causes reduce greatly the service life of heat exchanger tube, even is burnt out.The shared cone inlet of numerous in addition heat exchanger tubes, the as easy as rolling off a log cracking gas that causes is in the intrafascicular maldistribution of heat exchange tube, and the cracking gas flow is big in the heat exchange tube of middle part, and the burnt layer of coking is thin, the cracking gas flow is little in the heat exchange tube at periphery position, the burnt bed thickness of coking, when the cracking heavy charge, this phenomenon is obvious especially, the heat exchanger tube at periphery position even blocked by Jiao, force and carry out that steam-air burns or the parking hydraulic decoking, the heat exchanger tube utilization rate is low, influences the operation cycle of pyrolysis furnace.
The purpose of this utility model is a kind of upper intake lower outlet type double-sleeve quenching boiler with ingress protection structure and uniform device that provides at the deficiencies in the prior art; the ingress protection structure makes heat exchanger tube the local superheating phenomenon in upper end can not occur, and uniform device makes cracking gas in the intrafascicular distributed uniform of heat exchange tube.
The purpose of this utility model is achieved in that
Upper intake lower outlet type double-sleeve quenching boiler with ingress protection structure and uniform device mainly is made up of cone inlet, heat exchange sleeve, oblate pipe, outlet end socket, is provided with uniform device in the cone inlet, and the heat exchange sleeve porch is provided with the protection short tube; Uniform device be one by several not at the annulus of same plane, different-diameter, according to the cone that diameter is arranged and is formed by connecting by gusset, pyramid tip is established a spheroid; Uniform device is fixed on the cone inlet inwall by pitman; The protection short tube is a toroidal, and flared end is fixed on the heat exchange sleeve arrival end.
When the utility model goes out under Pintsch process gas is enterprising, the heat exchanger tube porch can not produce the hot-spot phenomenon, the heat exchanger tube long service life, cracking gas can be assigned in each heat exchanger tube equably, reduced coking trend, prolonged the cycle of operation, and burnt easily, the dispense with parking hydraulic decoking, utilization of capacity height.
Below in conjunction with accompanying drawing the utility model is described in detail:
Fig. 1 is the utility model structural representation
Fig. 2 is that the protection short tube cooperates figure in the utility model with heat exchange sleeve
Fig. 3 is a uniform device structural representation in the utility model
Consult accompanying drawing, the utility model comprises several heat exchange sleeve 4, this pipe is made up of interior pipe 5 and outer tube 6, and interior pipe 5 is walked cracking gas, and the annular space between two pipes is walked cooling medium, the bottom of interior pipe 5, outer tube 6 is connected to down on the oblate pipe 7, the upper end is connected on the oblate pipe 3, and by oblate pipe, outer tube 6 does not communicate by the inside of the oblate pipe of oblate Guan Bingyu interior pipe 5 fully, go up oblate pipe 3 two ends and be connected with upper header 1,2 respectively, following oblate pipe 7 two ends are connected with lower collecting box 8,9 respectively; Protection short tube 17 high-alloy steel short tubes for the band toroidal, flared end and the 5 arrival end spot welding of interior pipe are fixed; Uniform device be one by several not at the annulus 15 of same plane, different-diameter, according to the cone that diameter is arranged and is formed by connecting by gusset 14, pyramid tip is established a spheroid 12; Uniform device is fixed on the cone inlet inwall by pitman 13; Cracking gas enters from cone inlet 16 during work, uniform device in the cone inlet 16 forces gas to flowing all around, the flow that makes gas flow through the uniform device annular space is very approaching with the flow that flows through periphery, gas is evenly distributed in heat exchange sleeve 4, enter the gas of heat exchange sleeve 4 owing to be provided with protection short tube 17, high-temperature medium is not directly contacted with heat exchange sleeve 4 arrival ends; Cooling water enters in the lower collecting box 8,9 by down-comer, and flows through the annular space space between pipe 5 in down oblate pipe 7 enters, the outer tube 6, with become steam after the cracking gas heat exchange, aqueous mixtures flows into and goes up in the oblate pipe 3, and enters tedge by upper header 1,2; The cracking gas of pipe 5 cools off laggard inlet/outlet end socket 10 in being downward through, and discharges from outlet 11.
Claims (4)
1, a kind of upper intake lower outlet type double-sleeve quenching boiler with ingress protection structure and uniform device; mainly form by cone inlet (16), heat exchange sleeve (4), oblate pipe (3), (7), outlet end socket (10); it is characterized in that being provided with uniform device in the cone inlet (16), heat exchange sleeve (4) porch is provided with protection short tube (17).
2, quenching boiler according to claim 1, it is characterized in that described uniform device be one by several not at the annulus of same plane, different-diameter, according to the cone that diameter is arranged and is formed by connecting by gusset (14), pyramid tip is established a spheroid (12).
3, quenching boiler according to claim 1 is characterized in that described uniform device is fixed on cone inlet (16) inwall by pitman (13).
4, quenching boiler according to claim 1 is characterized in that described protection short tube (17) is a toroidal, and flared end is fixed on heat exchange sleeve (4) arrival end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00251219 CN2438930Y (en) | 2000-08-30 | 2000-08-30 | Upper intake lower outlet type double-pipe fast cool boiler with inlet protection structure and distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00251219 CN2438930Y (en) | 2000-08-30 | 2000-08-30 | Upper intake lower outlet type double-pipe fast cool boiler with inlet protection structure and distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2438930Y true CN2438930Y (en) | 2001-07-11 |
Family
ID=33609212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00251219 Expired - Lifetime CN2438930Y (en) | 2000-08-30 | 2000-08-30 | Upper intake lower outlet type double-pipe fast cool boiler with inlet protection structure and distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2438930Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975527A (en) * | 2010-10-21 | 2011-02-16 | 中国石油化工股份有限公司 | Linear quenching heat exchanger inlet connecting piece and quenching heat exchanger thereof |
| CN101760226B (en) * | 2009-12-17 | 2013-03-27 | 中国石油化工股份有限公司 | Quenching boiler with fluid distributing element |
| CN106440877A (en) * | 2016-10-31 | 2017-02-22 | 南京天华化学工程有限公司 | Double-sleeve chilling type heat exchanger applied to coal chemical industry |
-
2000
- 2000-08-30 CN CN 00251219 patent/CN2438930Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101760226B (en) * | 2009-12-17 | 2013-03-27 | 中国石油化工股份有限公司 | Quenching boiler with fluid distributing element |
| CN101975527A (en) * | 2010-10-21 | 2011-02-16 | 中国石油化工股份有限公司 | Linear quenching heat exchanger inlet connecting piece and quenching heat exchanger thereof |
| CN101975527B (en) * | 2010-10-21 | 2012-07-25 | 中国石油化工股份有限公司 | Linear quenching heat exchanger inlet connecting piece and quenching heat exchanger thereof |
| CN106440877A (en) * | 2016-10-31 | 2017-02-22 | 南京天华化学工程有限公司 | Double-sleeve chilling type heat exchanger applied to coal chemical industry |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20100830 Granted publication date: 20010711 |