CN109855442B - Medium participation radiation heating gasification device - Google Patents
Medium participation radiation heating gasification device Download PDFInfo
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- CN109855442B CN109855442B CN201811645116.5A CN201811645116A CN109855442B CN 109855442 B CN109855442 B CN 109855442B CN 201811645116 A CN201811645116 A CN 201811645116A CN 109855442 B CN109855442 B CN 109855442B
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- large cylinder
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- heating
- tube bundle
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 54
- 238000002309 gasification Methods 0.000 title claims abstract description 21
- 230000005855 radiation Effects 0.000 title claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 57
- 238000012546 transfer Methods 0.000 claims abstract description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000003546 flue gas Substances 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 30
- 239000003345 natural gas Substances 0.000 description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000003949 liquefied natural gas Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to a medium participation radiation heating gasification device, which comprises a heating runner and a cooling runner which are symmetrically arranged on the next in a horizontal large cylinder body by taking a horizontal axis passing through an axle center on the cross section of the large cylinder body as a symmetrical axis, wherein the heating runner consists of a fire cylinder and a flue gas tube bundle which are arranged on the two sides of a vertical axis passing through the axle center on the cross section of the large cylinder body, the cooling runner consists of a front cooling runner and a rear cooling runner which are arranged on the two sides of the vertical axis passing through the axle center on the cross section of the large cylinder body, a space between the large cylinder body and the walls of the heating runner and the cooling runner is used for filling intermediate heat transfer medium, and an anchor guide plate which is vertically arranged is arranged between the front cooling runner and the rear cooling runner. Compared with the prior art, the heating gasification efficiency can be improved by about 3.5-4.2%, and the invention is especially suitable for medium with larger viscosity, and has simple structure, small investment and easy popularization and use.
Description
Technical Field
The invention belongs to the technical field of oil gas heating devices, relates to a device for heating and gasifying natural gas and LNG in a natural gas supply flow, and particularly relates to a medium participatory radiation heating and gasifying device.
Background
Natural gas is a high-quality, efficient, green and clean low-carbon energy source, and is a key for effectively treating atmospheric haze and promoting energy large transformation. The development of the key technology and advanced equipment for the development and utilization of the natural gas is a key for ensuring the safe and stable supply of the natural gas and realizing the healthy and orderly sustainable development of the natural gas industry.
The raw gas typically produced from a gas well contains small amounts of water vapor in addition to combustible hydrocarbon gases. In the exploitation and long-distance transportation of natural gas, hydrate precipitation can be caused due to the fact that the temperature is too low, so that a shaft, a pipeline, a valve and equipment are blocked, production stopping and danger can be even caused in severe cases, and a large amount of natural gas heating and anti-freezing equipment is arranged at a wellhead, a metering station, a transfer station and the like to prevent the phenomenon. In the application process of natural gas, the natural gas is often required to be decompressed, when the pressure drop is large, the natural gas temperature can be excessively reduced, and heating equipment is also required to be arranged; in order to meet the combustion requirements or improve the efficiency and other technological requirements, a gas power plant is often provided with heating equipment for heating fuel gas. In addition, liquefied Natural Gas (LNG) is a low-temperature fluid at-162 ℃ and can be used as domestic fuel gas or industrial gas only after being heated and gasified and returned to normal temperature, so that a large amount of heating and gasifying equipment is necessarily used in LNG transportation and distribution application systems.
In general, natural gas is heated and gasified by indirect heating with an intermediate heat carrier. The structure is that a heating surface such as a fire cylinder, a smoke tube bundle and the like and a cooling heating surface such as a multi-return convection tube bundle and the like are arranged in a horizontal large cylinder body, and an intermediate heat transfer medium is filled in the cylinder to serve as a heat transfer medium between the heating surface and the cooling heating surface, so that the purpose of heat transfer between cold and hot fluids is achieved. Generally, the heating and cooling heating surfaces are axially symmetrically arranged on the central axis of the circular section of the large cylinder, and the fire cylinder and the smoke tube bundles are positioned below the horizontal axis and symmetrically arranged on the left side and the right side of the vertical axis; the multi-return convection tube bundle is positioned above the horizontal axis, and the return strokes are symmetrically arranged on the left side and the right side of the vertical axis.
The fuel is burnt in the fire cylinder to release chemical energy, and the burnt flue gas flows through the fire cylinder and the flue gas tube bundle and finally is discharged through the chimney. The high-temperature flue gas after combustion transmits heat to the fire tube and the wall surface of the flue gas tube bundle in a radiation and convection mode, and then the intermediate heat transfer medium is heated. The convection bank is located above the heating furnace and immersed in the intermediate heat transfer medium. The heated natural gas flows in the convection tube bundle, absorbs heat in a forced convection heat exchange mode, and increases the temperature. Obviously, the heat transfer form of the intermediate heat transfer medium and the fire tube, the flue gas tube bundle and the convection tube bundle is a key for influencing the heating and gasification heat efficiency of the natural gas.
Because of the lack of knowledge of the heating gasification mechanism, the existing research and application techniques are only directed to convective heat transfer flow fields of the medium, and completely ignore the existence of medium-participative radiation. The various structures provided by the method have very limited effects on solving the defect that the conventional arrangement form is unfavorable for forming an effective heat transfer flow field, and sometimes even the medium participation radiation quantity is weakened artificially, so that the problems of low natural gas heating gasification efficiency, slow starting, high energy consumption and the like are solved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a medium participation type radiation heating gasification device.
The aim of the invention can be achieved by the following technical scheme:
a medium participation radiation heating gasification device comprises a horizontal large cylinder body, wherein a horizontal axis passing through an axle center on the cross section of the large cylinder body is taken as a symmetrical axis, a heating flow channel and a cooling flow channel are symmetrically arranged on the next side, the heating flow channel consists of a fire cylinder and a flue gas tube bundle which are arranged on the two sides of a vertical axis passing through the axle center on the cross section of the large cylinder body, the cooling flow channel consists of a front cooling flow channel and a rear cooling flow channel which are arranged on the two sides of the vertical axis passing through the axle center on the cross section of the large cylinder body, a space between the large cylinder body and the walls of the heating flow channel and the cooling flow channel is used for filling middle heat carrying medium, and an anchor type guide plate is arranged between the front cooling flow channel and the rear cooling flow channel in a vertical mode.
Preferably, the anchor-type guide plate is composed of a vertical flat plate and an arc-shaped anchor-type part connected to the bottom end of the vertical flat plate.
An anchor-type guide plate is vertically arranged between the front cooling flow passage and the rear cooling flow passage. The vertical baffle plate parts of the anchor type guide plates are arranged along the flow channels, so that the local flow opposite impact caused by temperature difference between the multi-return convection tube bundles is effectively prevented, the circular arc-shaped anchor type parts of the anchor type guide plates guide tissues to absorb the heat of high-temperature flue gas in the lower heating flow channels to flow upwards, the heat is released through the upper cooling flow channels and then flows back, the arc-shaped structure enables the heat flow field in the large cylinder to be smoother and more uniform, the flow channels between the upper flow channels and the lower flow channels are ensured to be smooth, the medium participation radiation is enhanced to different degrees, the defect that the original technology can enable the heat flow field to be improved but the medium participation radiation is artificially blocked and weakened is overcome, and the heat exchange is sufficient, so that the coupling heat transfer efficiency is improved, the energy consumption is reduced, and the test can obtain better heating gasification effect.
Preferably, the anchor guide plate is divided into a plurality of blocks along the axial direction of the large cylinder. In consideration of the flow distribution of the medium in the axial length direction and the rigidity of the anchor-type guide plate, the anchor-type guide plate is divided into a plurality of pieces along the axial direction, so that the manufacturing and the use are facilitated.
Preferably, the height and arc-shaped size of the anchor-type guide plate are adjusted according to actual use occasions. The height, the length and the arc size of the anchor guide plate are adjusted according to different media and large cylinder sizes, so that a better coupling heat transfer effect is obtained.
Preferably, the top end of the vertical flat plate is connected with the top of the inner side wall of the large cylinder in a welding mode, and the arc-shaped anchor part is suspended. The top end of the vertical flat plate is connected with the inner side wall of the large cylinder in a welding mode, so that the processing is simple, the use is reliable, and the faults are few.
Preferably, the fire cylinder and the front cooling flow passage are positioned on the same side of a vertical shaft passing through the axle center on the cross section of the large cylinder body.
Preferably, the cooling flow channel is a multi-return convection tube bundle, the front cooling flow channel is composed of a first return tube bundle and a second return tube bundle which are arranged one after the other, and the rear cooling flow channel is composed of a third return tube bundle and a fourth return tube bundle which are arranged one after the other.
Preferably, the fire cylinder and the flue gas tube bundles are symmetrically arranged on two sides of a vertical shaft passing through the shaft center on the cross section of the large cylinder body, and the front cooling flow passage and the rear cooling flow passage are symmetrically arranged on two sides of the vertical shaft passing through the shaft center on the cross section of the large cylinder body.
Compared with the prior art, the invention has very outstanding characteristics and remarkable superiority:
(1) The heating gasification efficiency can be improved by about 3.5 to 4.2 percent, and the method is especially suitable for medium with high viscosity, such as ethylene glycol, and the economic benefit is considerable.
(2) Simple structure, small investment and obvious benefit, can recycle the investment of the device in a short period, and is very easy to popularize and use.
Drawings
FIG. 1 is a diagram (a) and a partial enlarged view (b) of distribution diagrams of a heating runner and a cooling runner on a two-dimensional cross section of a medium participation radiation heating gasification device;
FIG. 2 is a schematic diagram of a medium-participating radiant heating gasification apparatus of the present invention;
FIG. 3 is a graph showing the temperature field distribution of a medium-participating radiant heating gasification device of the present invention;
FIG. 4 is a graph showing the thermal flow field distribution of a medium-participating radiant heating gasification device of the present invention.
In the figure, 1 is a large cylinder, 2 is a fire cylinder, 3 is a flue gas tube bundle, 4 is a front cooling flow passage, 41 is a first return tube bundle, 42 is a second return tube bundle, 5 is a rear cooling flow passage, 51 is a third return tube bundle, 52 is a fourth return tube bundle, 6 is a guide plate, 61 is a vertical flat plate, and 62 is an arc-shaped anchor part.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples.
Example 1
A medium participation radiation heating gasification device comprises a horizontal large cylinder body 1, wherein a horizontal axis passing through an axle center on the cross section of the large cylinder body 1 is used as a symmetrical axis, a heating runner and a cooling runner are symmetrically arranged next on the horizontal large cylinder body 1, the heating runner is composed of a fire cylinder 2 and a flue gas tube bundle 3 which are arranged on two sides of a vertical axis passing through the axle center on the cross section of the large cylinder body 1, the cooling runner is composed of a front cooling runner 4 and a rear cooling runner 5 which are arranged on two sides of the vertical axis passing through the axle center on the cross section of the large cylinder body 1, a space between the large cylinder body 1 and the walls of the heating runner and the cooling runner is used for filling intermediate heat transfer medium, and an anchor guide plate 6 is arranged vertically between the front cooling runner 4 and the rear cooling runner 5.
In this embodiment, the anchor guide 6 is composed of a vertical flat plate 61 and an arc-shaped anchor portion 62 connected to the bottom end of the vertical flat plate 61. The top end of the vertical flat plate 61 is connected with the top of the inner side wall of the large cylinder body 1 in a welding mode, and the arc-shaped anchor-shaped part 62 is suspended in the air. The anchor-type guide plate 6 is divided into a plurality of pieces along the axial direction of the large cylinder 1. The height and arc-like dimensions of the anchor-type guide plate 6 are adjusted according to the actual use. The height, the length and the arc size of the anchor guide plate are adjusted according to different media and large cylinder sizes, so that a better coupling heat transfer effect is obtained. In this embodiment, the fire cylinder 2 and the front cooling runner 4 are preferably located on the same side of a vertical axis passing through the axle center on the cross section of the large cylinder 1. The fire cylinder 2 and the flue gas tube bundle 3 are symmetrically arranged on two sides of a vertical shaft passing through the shaft center on the cross section of the large cylinder body 1, and the front cooling flow passage 4 and the rear cooling flow passage 5 are symmetrically arranged on two sides of the vertical shaft passing through the shaft center on the cross section of the large cylinder body 1. In this embodiment, the cooling flow channel is a multi-return convection tube bundle, the front cooling flow channel 4 is composed of a first return tube bundle 41 and a second return tube bundle 42 arranged one after the other, and the rear cooling flow channel 5 is composed of a third return tube bundle 51 and a fourth return tube bundle 52 arranged one after the other.
Specifically:
as shown in fig. 1 and 2, in the large cylinder 1 having a length of 2600 mm and a diameter of 1320 mm, the heating flow path and the cooling flow path are symmetrically arranged, and distances b1 and b2 between the horizontal and vertical heating surfaces are 540 mm and 510 mm, respectively. The firebox diameter D2 is 325 mm. The flue gas bundle 3 consisted of 24 tubes of 42 mm diameter with a tube spacing of 68 mm. The convection tube bundle consists of 9 small round tubes with the diameter of 38 mm, four tube passes are made back and forth, the tube distances b3 and b4 are respectively 90 mm and 65 mm, and the angles are respectively60 deg..
As shown in fig. 3 and fig. 4, when the medium is ethylene glycol, an anchor guide plate with a height of 550mm, a thickness of 5.6 mm and an arc length of 170mm is arranged between the cooling flow passage on the left side of the large cylinder 1 and the cooling flow passage on the right side, namely, an anchor guide plate 6 is arranged between a third return tube bundle 51 on the left side, a fourth return tube bundle 52 and a first return tube bundle 41 on the right side, and a second return tube bundle 42, so that the flow opposite impact phenomenon caused by the temperature difference between the first return tube bundle 41, the second return tube bundle 42, the third return tube bundle 51 and the fourth return tube bundle 52 is effectively prevented, the natural convection heat exchange between the upper flow passage and the lower flow passage and the smooth circulation of a radiation passage are ensured, and the heating and cooling heating surfaces on the left side and the right side in the large cylinder 1 are respectively due to the coupling effect of hot pressing and medium participation radiation, and the arc-shaped structure of the anchor guide plate 6 ensures that the heat flow field in the large cylinder is smoother, the medium ethylene glycol forms a left vortex outward swirling heat flow field, so that the efficiency of the gasification device is improved by 3.85%.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those skilled in the art that various modifications can be readily made to these embodiments and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications without departing from the scope of the present invention.
Claims (4)
1. A medium participation radiation heating gasification device comprises a horizontal large cylinder body (1), wherein a horizontal axis passing through an axle center on the cross section of the large cylinder body (1) is taken as a symmetrical axis, a heating runner and a cooling runner are symmetrically arranged on the next side, the heating runner is composed of a fire cylinder (2) and a flue gas tube bundle (3) which are arranged on two sides of a vertical axis passing through the axle center on the cross section of the large cylinder body (1), the cooling runner is composed of a front cooling runner (4) and a rear cooling runner (5) which are arranged on two sides of the vertical axis passing through the axle center on the cross section of the large cylinder body (1), and a space between the large cylinder body (1) and the walls of the heating runner and the cooling runner is used for filling middle heat transfer medium;
the anchor-type guide plate (6) consists of a vertical flat plate (61) and an arc-shaped anchor-type part (62) connected to the bottom end of the vertical flat plate (61);
the anchor guide plate (6) is axially divided into a plurality of blocks along the large cylinder body (1);
the top end of the vertical flat plate (61) is connected with the top of the inner side wall of the large cylinder body (1) in a welding mode, and the arc-shaped anchor part (62) is suspended in the air.
2. A medium-participatory radiant heating gasification apparatus according to claim 1, wherein the cartridge (2) and the front cooling channel (4) are located on the same side of the vertical axis passing through the shaft center in the cross section of the large cartridge (1).
3. A medium-participatory radiant-heating gasification apparatus according to claim 1 or 2, wherein the cooling flow path is a multi-pass convection flow tube bundle, the front cooling flow path (4) is composed of a first pass tube bundle (41) and a second pass tube bundle (42) arranged one above the other, and the rear cooling flow path (5) is composed of a third pass tube bundle (51) and a fourth pass tube bundle (52) arranged one above the other.
4. A medium-participatory radiant heating gasification apparatus according to claim 1, wherein the fire cylinder (2) and the flue gas tube bundle (3) are symmetrically arranged on both sides of a vertical axis passing through the axis on the cross section of the large cylinder (1), and the front cooling flow passage (4) and the rear cooling flow passage (5) are symmetrically arranged on both sides of the vertical axis passing through the axis on the cross section of the large cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811645116.5A CN109855442B (en) | 2018-12-29 | 2018-12-29 | Medium participation radiation heating gasification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811645116.5A CN109855442B (en) | 2018-12-29 | 2018-12-29 | Medium participation radiation heating gasification device |
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| Publication Number | Publication Date |
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| CN109855442A CN109855442A (en) | 2019-06-07 |
| CN109855442B true CN109855442B (en) | 2024-02-27 |
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| CN201811645116.5A Active CN109855442B (en) | 2018-12-29 | 2018-12-29 | Medium participation radiation heating gasification device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN109855442A (en) | 2019-06-07 |
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