CN103925591A - Winding pipe steam superheater for methanation unit - Google Patents
Winding pipe steam superheater for methanation unit Download PDFInfo
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- CN103925591A CN103925591A CN201310014715.8A CN201310014715A CN103925591A CN 103925591 A CN103925591 A CN 103925591A CN 201310014715 A CN201310014715 A CN 201310014715A CN 103925591 A CN103925591 A CN 103925591A
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- tube
- heat exchanger
- steam superheater
- winding pipe
- pipe
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Abstract
The invention discloses a winding pipe steam superheater for a methanation unit. The winding pipe steam superheater comprises pipe boxes (1), pipe plates (2) and a shell-side shell body (3), wherein the pipe boxes (1) are located at two ends of the winding pipe steam superheater and are respectively connected with the pipe plates (2); the shell-side shell body (3) is welded between the pipe plates (2) at two ends of the winding pipe steam superheater; a winding pipe core (5) is arranged in the shell-side shell body (3), and comprises a center cylinder (6), a heat exchanging pipe (7) and a heat exchanging pipe fixing piece; two ends of the center cylinder (6) are connected with the pipe plates (2); the heat exchanging pipe (7) is wound on the outer surface of the center cylinder (6) and is connected with the center cylinder (6) through the heat exchanging pipe fixing piece; two ends of the heat exchanging pipe (7) are respectively inserted into the pipe plates (2) to form pipe bundles communicated with the pipe boxes (1) at two ends of the winding pipe steam superheater. The winding pipe steam superheater is compact in structure, and strong in pressure-resistant capacity; big heat transfer area can be accommodated in the unit shell body, and the pipe bundles can automatically absorb heat and then expand.
Description
Technical field
The present invention relates to coal and prepare the steam superheater in the methanation device of instead of natural gas (SNG), belong to coal preparing natural gas field, particularly, the present invention relates to a kind of winding pipe steam superheater for methanation device.
Background technology
Methanation reaction is strong exothermal reaction, and the energy in methanation reaction approximately has 1/5th forms with heat to occur, therefore utilizing reaction heat generation super-pressure superheated steam is the first-selected means that improve energy recovery rate, reduce device comprehensive energy consumption.
Existing methanation device mainly comprises methane reactor and heat exchanger, as disclosed a kind of high temperature methanation device in Chinese invention patent CN102513034A, comprises methane reactor and heat exchanger.In existing methanation device, in order further to utilize reaction heat generation super-pressure superheated steam, conventionally utilize the overheated extra high pressure steam of rich, high temperature methane gas of methanator outlet, but, because both sides relative temperature difference is less, heat exchange load is large, and steam, high methane gas pressure are high.In addition, conventional heat exchanger bears High Pressure Shell and Gao Re, adopts thick wall shell liner insulated lining, and manufacturing cost is high, is difficult to realize pure countercurrent flow structure, and heat exchange efficiency is low.Therefore, utilize conventional heat exchanger, especially conventional shell-and-tube heat exchanger is difficult to realize the object of steam superheating.
Summary of the invention
For further effectively utilizing the reaction heat of methane reactor, improve energy recovery rate, reduce device comprehensive energy consumption, a kind of winding pipe steam superheater for methanation device provided by the present invention, comprises bobbin carriage 1, tube sheet 2, shell side housing 3, it is characterized in that:
Described bobbin carriage 1 is positioned at the two ends of winding pipe steam superheater and is connected with tube sheet 2 respectively, described shell side housing 3 is welded between the tube sheet 2 at described two ends, the interior winding pipe core body 5 that arranges of described shell side housing 3, it comprises central tube, heat exchanger tube 7 and heat exchanger tube fixture, the two ends of described central tube are connected with described tube sheet 2, described heat exchanger tube 7 is wrapped in the outer surface of described central tube and is connected with this central tube by heat exchanger tube fixture, and the two ends of described heat exchanger tube 7 are inserted respectively tube sheet 2 and formed the tube bank being connected with two ends bobbin carriage 1.
Described heat exchanger tube 7 is successively wrapped in the outer surface of described central tube in a spiral manner, the heat exchanger tube 7 that is innermost layer is closely wrapped in the outer surface of this central tube along the barrel of central tube by helix, inferior outer field heat exchanger tube 7 is alternately closely wrapped in outside innermost layer heat exchanger tube 7 successively, by that analogy, the structure that above-mentioned heat exchanger tube 7 is successively closely wound around at this central tube outer surface, make the structure of steam superheater compacter, in unit housing, can hold very large heat transfer area.Described heat exchanger tube fixture comprises filler strip and pipe clamp, described filler strip is arranged between the heat exchanger tube 7 of every layer of winding with by each layer of separation, described pipe clamp is fixed on described heat exchanger tube 7 with spacing to it, and each the root heat exchanger tube being fixed in the heat exchanger tube 7 of each layer of winding carries out spacing.
The caliber scope of described heat exchanger tube 7 is 6 ~ 300mm, preferred 6 ~ 200mm, and after being wound around in a spiral manner, heat exchanger tube 7 anti-pressure abilities are strong, thermal compensation ability is good, and the thermal expansion of heat exchanger tube 7 and central tube can absorb voluntarily.
The bobbin carriage 1 being connected with described central tube two ends is respectively arranged with hot-fluid medium inlet and hot-fluid media outlet, hot-fluid medium is walked in heat exchanger tube 7, walk tube side, the two ends of described shell side housing 3 are respectively arranged with cold flow medium inlet and cold flow media outlet, cold flow medium is walked shell side, described cold flow medium inlet and described hot-fluid media outlet are positioned at the same side, and described cold flow media outlet and described hot-fluid medium inlet are positioned at the same side, and hot-fluid medium is contacted with cold flow medium counter flow.
The hot-fluid medium temperature at place, tube side hot-fluid medium inlet is high, therefore, the described bobbin carriage 1 that is provided with one end of hot-fluid medium inlet arranges lining 8 with the cavity inner wall that tube sheet 2 forms, conventionally adopt nonmetal heat-resistant lining, only this place's bobbin carriage inwall arranges heat-resistant lining, to reduce the shell material requirement to hot-fluid medium inlet side; The housing of other position all adopts hot wall design, can reduce like this difficulty in device fabrication, construction and the maintenance bringing because of employing heat-resistant lining as far as possible, reduces device fabrication cost.
Described central tube is axial pulling type or two sections of separate types; Described axial pulling type central tube 6 comprises urceolus and inner core, described urceolus bottom is connected with the tube sheet of described shell side housing 3 bottoms, described inner core top is connected with the tube sheet on described shell side housing 3 tops, described urceolus is enclosed within outside inner core and mutually and does not fix, the top of this urceolus does not contact with the tube sheet on described shell side housing 3 tops, makes urceolus expanded by heating retractable;
Described two sections of separate type central tubes 6 ' comprise the discontinuous cylindrical shell of two sections, between described epimere cylindrical shell and hypomere cylindrical shell, leave distance, the top of described epimere cylindrical shell is connected with the tube sheet on described shell side housing 3 tops, the bottom of described hypomere cylindrical shell is connected with the tube sheet of described shell side housing 3 bottoms, hypomere cylindrical shell expanded by heating retractable; Central tube has supporting role, and its outer surface will be wound around heat exchanger tube simultaneously, so central tube should have certain strength and stiffness.
Between described winding pipe core body 5 and shell side housing 3, on the inwall of described shell side housing 3, parallel works is set.Described parallel works is chuck guide shell 4 or deflector 4 ', and the some deflectors with guide functions, its objective is that shell side medium leakage current is reduced in the gap by reducing between tube core body and shell side housing, improve the heat exchange efficiency of wrap-round tubular heat exchanger.
Described winding pipe steam superheater is vertical heat exchanger or horizontal heat exchanger.Described axial pulling type central tube 6 and two sections of separate types 6 ' all can be applied in vertical heat exchanger or horizontal heat exchanger.Described chuck guide shell 4 or deflector 4 ' all can be applied in vertical heat exchanger or horizontal heat exchanger.
Winding pipe steam superheater for methanation device provided by the present invention has compact conformation, in unit housing, can hold very large heat transfer area, and voltage endurance capability is strong, and tube bank is the advantage such as absorbing thermal expansion voluntarily; Novel wound pipes type steaming superheater for methanation device, its tube side medium, instant heating flow medium is rich, high temperature methane gas, shell side medium, be that cold flow medium is high-pressure saturated steam (being heated steam), the hot-fluid medium of tube side and shell side be heated steam inside and outside winding type heat exchanger pipe all the time with the reverse flow of turbulent flow form, can realize approximate pure countercurrent flow, heat transfer coefficient is large, and then reduces the occupation of land size of equipment; Due to hot-fluid medium in methanation device be heated steam and all belong to clean gas, therefore can reduce that spiral heat exchange tube stops up and the risk of shell side fouling; Even if there is a small amount of fouling and heat exchanger tube, stop up, also can remove by the method for pickling; This makes wound form steam superheater more be adapted at applying in methanation device.
Accompanying drawing explanation
Fig. 1 is a kind of vertical winding pipe steam superheater structural representation for methanation device provided by the invention.
Fig. 2 is a kind of horizontal winding pipe steam superheater structural representation for methanation device provided by the invention.
Fig. 3 a is the schematic diagram of the axial pulling type central tube of a kind of winding pipe steam superheater for methanation device provided by the invention.
Fig. 3 b is the schematic diagram of two sections of separate type central tubes of a kind of winding pipe steam superheater for methanation device provided by the invention.
Description of reference numerals:
1-bobbin carriage, 2-tube sheet, 3-shell side housing, 4-chuck guide shell, 4 '-deflector, 5-winding pipe core body, the axial pulling type central tube of 6-, 6 '-two sections of separate type central tubes, 7-heat exchanger tube, a1-hot-fluid medium inlet, a2-hot-fluid media outlet, b1-cold flow medium inlet, b2-cold flow media outlet, c-central tube slip joint.
The specific embodiment
Below in conjunction with embodiment, further illustrate the present invention.
Embodiment 1
As shown in Figure 1, a kind of vertical winding pipe steam superheater for methanation device, comprise bobbin carriage 1, tube sheet 2, shell side housing 3, described bobbin carriage 1 is positioned at the two ends of winding pipe steam superheater and is connected with tube sheet 2 respectively, described shell side housing 3 is welded between the tube sheet 2 at described two ends, the interior winding pipe core body 5 that arranges of described shell side housing 3, it comprises that axial pulling type central tube 6(also can adopt two sections of separate types), heat exchanger tube 7 and heat exchanger tube fixture, described axial pulling type central tube 6 is absorbing thermal expansion voluntarily, this axial pulling type central tube 6 has supporting role, its outer surface will be wound around heat exchanger tube simultaneously, so it should have certain strength and stiffness, its two ends are connected with described tube sheet 2, described heat exchanger tube 7 is wrapped in the outer surface of described axial pulling type central tube 6 and passes through heat exchanger tube fixture coupled, the two ends of described heat exchanger tube 7 are inserted respectively tube sheet 2 and are formed the tube bank being connected with each end bobbin carriage 1.
Described heat exchanger tube 7 is successively closely wrapped in the outer surface of described axial pulling type central tube 6 in a spiral manner, be innermost layer heat exchanger tube 7 vertically the barrel of pulling type central tube 6 by helix, be closely wrapped in its outer surface, inferior outer field heat exchanger tube 7 is alternately closely wrapped in outside innermost layer heat exchanger tube 7 successively, by that analogy, described heat exchanger tube fixture comprises filler strip and pipe clamp, described filler strip is arranged between the heat exchanger tube 7 of every layer of winding with by each layer of separation, and described pipe clamp is fixed on described heat exchanger tube 7 with spacing to it.The caliber of described heat exchanger tube 7 is 6 ~ 200mm.
The bobbin carriage 1 being connected with described axial pulling type central tube 6 two ends is respectively arranged with hot-fluid medium inlet and hot-fluid media outlet, hot-fluid medium is walked in heat exchanger tube 7, walk tube side, the two ends of described shell side housing 3 are respectively arranged with cold flow medium inlet and cold flow media outlet, cold flow medium is walked shell side, described cold flow medium inlet and described hot-fluid media outlet are positioned at the same side, and described cold flow media outlet and described hot-fluid medium inlet are positioned at the same side, and hot-fluid medium is contacted with cold flow medium counter flow.
The hot-fluid medium temperature at tube side hot-fluid medium inlet place is high, therefore, described in be provided with one end of hot-fluid medium inlet bobbin carriage 1 with the cavity inner wall that tube sheet 2 forms, lining 8 is set, conventionally adopt nonmetal heat-resistant lining.
Between described winding pipe core body 5 and shell side housing 3, chuck guide shell 4(is set on the inwall of described shell side housing 3 and also can adopts the structure of deflector 4 ').
Embodiment 2
As shown in Figure 2, a kind of horizontal winding pipe steam superheater for methanation device, except employing horizontal heat exchanger and without vertical heat exchanger, deflector 4 ' is set on the inwall of shell side housing 3 replaces chuck guide shell 4(also can adopt the structure of chuck guide shell 4), adopt outside two sections of separate type central tubes 6 ' (also can adopt axial pulling type), identical with embodiment 1 in its structure.
Claims (9)
1. for a winding pipe steam superheater for methanation device, comprise bobbin carriage (1), tube sheet (2), shell side housing (3), it is characterized in that:
Described bobbin carriage (1) is positioned at the two ends of winding pipe steam superheater and connects respectively tube sheet (2), described shell side housing (3) is welded between the tube sheet (2) at described two ends, winding pipe core body (5) is set in described shell side housing (3), it comprises central tube, heat exchanger tube (7) and heat exchanger tube fixture, the two ends of described central tube are connected with described tube sheet (2), described heat exchanger tube (7) is wrapped in the outer surface of described central tube and is connected with this central tube by heat exchanger tube fixture, the two ends of described heat exchanger tube (7) are inserted respectively tube sheet (2) and are formed the tube bank being connected with two ends bobbin carriage (1).
2. a kind of winding pipe steam superheater for methanation device according to claim 1, is characterized in that:
Described heat exchanger tube (7) is successively wrapped in the outer surface of described central tube in a spiral manner, described heat exchanger tube fixture comprises filler strip and pipe clamp, described filler strip is arranged between the heat exchanger tube (7) of every layer of winding so that each layer separated, and it is upper with spacing to it that described pipe clamp is fixed on described heat exchanger tube (7).
3. a kind of winding pipe steam superheater for methanation device according to claim 2, is characterized in that:
The caliber scope of described heat exchanger tube (7) is 6 ~ 300mm.
4. a kind of winding pipe steam superheater for methanation device according to claim 1, is characterized in that:
The bobbin carriage (1) being connected with described central tube two ends is respectively arranged with hot-fluid medium inlet and hot-fluid media outlet, the two ends of described shell side housing (3) are respectively arranged with cold flow medium inlet and cold flow media outlet, described cold flow medium inlet and described hot-fluid media outlet are positioned at the same side, and described cold flow media outlet and described hot-fluid medium inlet are positioned at the same side.
5. a kind of winding pipe steam superheater for methanation device according to claim 4, is characterized in that:
The described bobbin carriage (1) that is provided with one end of hot-fluid medium inlet arranges lining (8) with the cavity inner wall that tube sheet (2) forms.
6. a kind of winding pipe steam superheater for methanation device according to claim 1, is characterized in that:
Described central tube is axial pulling type or two sections of separate types;
Described axial pulling type central tube (6) comprises urceolus and inner core, described urceolus bottom is connected with the tube sheet of described shell side housing (3) bottom, described inner core top is connected with the tube sheet on described shell side housing (3) top, described urceolus is enclosed within outside inner core and mutually and does not fix, and the top of this urceolus does not contact with the tube sheet on described shell side housing (3) top;
Described two sections of separate type central tubes (6 ') comprise the discontinuous cylindrical shell of two sections, between described epimere cylindrical shell and hypomere cylindrical shell, leave distance, the top of described epimere cylindrical shell is connected with the tube sheet on described shell side housing (3) top, and the bottom of described hypomere cylindrical shell is connected with the tube sheet of described shell side housing (3) bottom.
7. a kind of winding pipe steam superheater for methanation device according to claim 1, is characterized in that:
Between described winding pipe core body (5) and shell side housing (3), on the inwall of described shell side housing (3), parallel works is set.
8. a kind of winding pipe steam superheater for methanation device according to claim 7, is characterized in that:
Described parallel works is chuck guide shell (4) or deflector (4 ').
9. a kind of winding pipe steam superheater for methanation device according to claim 1, is characterized in that:
Described winding pipe steam superheater is vertical heat exchanger or horizontal heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310014715.8A CN103925591A (en) | 2013-01-15 | 2013-01-15 | Winding pipe steam superheater for methanation unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310014715.8A CN103925591A (en) | 2013-01-15 | 2013-01-15 | Winding pipe steam superheater for methanation unit |
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| Publication Number | Publication Date |
|---|---|
| CN103925591A true CN103925591A (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310014715.8A Pending CN103925591A (en) | 2013-01-15 | 2013-01-15 | Winding pipe steam superheater for methanation unit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567480A (en) * | 2014-12-26 | 2015-04-29 | 牛玉振 | Large ultrahigh-pressure wound tube heat exchanger |
| CN107883370A (en) * | 2016-09-30 | 2018-04-06 | 中石化洛阳工程有限公司 | A kind of vertical steam superheater |
| CN108212025A (en) * | 2016-12-14 | 2018-06-29 | 中国石化工程建设有限公司 | A kind of compound tower-type methanator |
| CN109999525A (en) * | 2019-04-16 | 2019-07-12 | 浙江新锐空分设备有限公司 | A kind of evaporator for krypton xenon rectifying column |
| CN116817635A (en) * | 2023-08-30 | 2023-09-29 | 山东豪迈机械制造有限公司 | Coiled pipe type heat exchanger |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4296713A (en) * | 1979-02-07 | 1981-10-27 | General Atomic Company | Vapor generator |
| CN2769811Y (en) * | 2005-03-04 | 2006-04-05 | 吴光林 | Coiled pipe heat exchanger |
| CN201548103U (en) * | 2009-08-28 | 2010-08-11 | 四川亚联高科技股份有限公司 | Raw gas heat-exchange facility for natural gas hydrogen production plant |
| CN102564167A (en) * | 2011-10-14 | 2012-07-11 | 张周卫 | Single-flow low-temperature spiral winding tube type heat exchanger with vacuum heat-insulation effect |
| CN203068487U (en) * | 2013-01-15 | 2013-07-17 | 中国石化工程建设有限公司 | Winding pipe steam superheater for methanation unit |
-
2013
- 2013-01-15 CN CN201310014715.8A patent/CN103925591A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4296713A (en) * | 1979-02-07 | 1981-10-27 | General Atomic Company | Vapor generator |
| CN2769811Y (en) * | 2005-03-04 | 2006-04-05 | 吴光林 | Coiled pipe heat exchanger |
| CN201548103U (en) * | 2009-08-28 | 2010-08-11 | 四川亚联高科技股份有限公司 | Raw gas heat-exchange facility for natural gas hydrogen production plant |
| CN102564167A (en) * | 2011-10-14 | 2012-07-11 | 张周卫 | Single-flow low-temperature spiral winding tube type heat exchanger with vacuum heat-insulation effect |
| CN203068487U (en) * | 2013-01-15 | 2013-07-17 | 中国石化工程建设有限公司 | Winding pipe steam superheater for methanation unit |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567480A (en) * | 2014-12-26 | 2015-04-29 | 牛玉振 | Large ultrahigh-pressure wound tube heat exchanger |
| CN107883370A (en) * | 2016-09-30 | 2018-04-06 | 中石化洛阳工程有限公司 | A kind of vertical steam superheater |
| CN108212025A (en) * | 2016-12-14 | 2018-06-29 | 中国石化工程建设有限公司 | A kind of compound tower-type methanator |
| CN109999525A (en) * | 2019-04-16 | 2019-07-12 | 浙江新锐空分设备有限公司 | A kind of evaporator for krypton xenon rectifying column |
| CN116817635A (en) * | 2023-08-30 | 2023-09-29 | 山东豪迈机械制造有限公司 | Coiled pipe type heat exchanger |
| CN116817635B (en) * | 2023-08-30 | 2023-11-10 | 山东豪迈机械制造有限公司 | Coiled pipe type heat exchanger |
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Application publication date: 20140716 |