CN206771747U - A kind of molten salt furnace of split type gravity flow structure in parallel - Google Patents

A kind of molten salt furnace of split type gravity flow structure in parallel Download PDF

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Publication number
CN206771747U
CN206771747U CN201720525235.1U CN201720525235U CN206771747U CN 206771747 U CN206771747 U CN 206771747U CN 201720525235 U CN201720525235 U CN 201720525235U CN 206771747 U CN206771747 U CN 206771747U
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CN
China
Prior art keywords
furnace
convection
parallel
radiant
molten salt
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201720525235.1U
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Chinese (zh)
Inventor
彭海涌
周筱丰
付佐旭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Hengda Boiler Manufacturing Co Ltd
Original Assignee
Changzhou Hengda Boiler Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Priority to CN201720525235.1U priority Critical patent/CN206771747U/en
Application granted granted Critical
Publication of CN206771747U publication Critical patent/CN206771747U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of molten salt furnace of split type gravity flow structure in parallel;Including fused salt furnace body, the fused salt furnace body includes burner and vertical and cylindrical tube furnace;Radiation heating-surface and convection heating surface separate in the vertical and cylindrical tube furnace, respectively in single radiant section and convection section;Radiant section is single cylindrical coil coil pipe radiant section;Radiant section is columnar structured, is made up of the cylindrical coil coil pipe and upper lower header of individual layer;The convection section is designed to the snakelike tubular construction of gravity flow;Convection section is made up of a series of coiled pipes in parallel and upper lower header, is connected between the radiant section and convection section by high-temperature flue;The utility model provides a kind of molten salt furnace of split type gravity flow structure in parallel, solves traditional vertical cylindrical shape tubular type furnace structure because of the technical problem limited by ratio of height to diameter and transportation clearance, can meet requirement of the large-scale thermal power molten salt furnace to structure.

Description

A kind of molten salt furnace of split type gravity flow structure in parallel
Technical field
Special industrial stove technical field is the utility model is related to, specifically a kind of fused salt of split type gravity flow structure in parallel Stove.
Background technology
Molten salt furnace is using coal, oil, gas as fuel, using fused salt as heat carrier, liquid phase circulation is forced using pump for liquid salts, by heat energy After being conveyed to heating equipment, the single flow special industrial stove reheated is then returned;Molten salt furnace feature
1. molten salt furnace can obtain higher operating temperature under relatively low operating pressure.
2. molten salt furnace is closed circuit forced circulation heat supply, efficiency of utilization is high, and energy-saving effect is notable.
3. heat supply temperature is stable, load-temperature adjustment can be accurately carried out.
4. molten salt furnace is needs heat supply temperature to provide high temperature heat source in 400 DEG C~550 DEG C of user and technical process.
2. fused salt characteristic
1. fused salt is both different from water, and different from organic heat carrier, fused salt has point of binary salt, ternary salt, is that inorganic heat carries Body.
2. the heat endurance of fused salt is good, thermal conductivity is good, service life length.
3. fused salt temperature in use is 350 DEG C~600 DEG C, optimum working temperature is 400 DEG C~550 DEG C.Design pressure is little In 2.5MPa.
4. fused salt is solid-state at normal temperatures, must be preheated before startup dissolves it, and fused salt during parking in system must return Flow in fused salt groove.
3. molten salt furnace main design parameters
1. thermal power rating:17.5MW
2. rated operating pressure:1.0Mpa
3. fused salt maximum operating temperature:460℃
4. fused salt circular flow:850m3/h
5. fuel band:Mixing dry gas
6. fuel low heat value:15629KJ/m3
7. the thermal efficiency:92.5%
4. fused salt furnace structure
It is vertical and cylindrical tubular type furnace structure that molten salt furnace is conventional.Its heating surface is made up of inside and outside helical layer coil pipe, with heat The increase of power, also can by it is interior, in, outer three helical layers coil pipe forms.Coal-fired molten salt furnace combustion chamber is placed in lower portion of furnace body.Fuel oil, The combustion chamber of gas furnace can be placed at the top of body of heater or bottom.Inner coil pipe main composition radiation heating-surface.It is inside and outside (or it is interior, in, it is outer) Convection heating surface is formed between spiral coil, flue gas is discharged from exhaust opening after heat exchange.In order to make full use of molten salt furnace tail flue gas Heat reduces exhaust gas temperature, need to arrange afterbody heat exchanger, be finally reached the purpose of energy-saving and emission-reduction.Fused salt by lower collector pipe enter in, Outside (or it is interior, in, it is outer) spiral coil, after absorbing heat in stove, heating equipment is expelled to by upper header.Coiled tube supports are in furnace bottom On support or it is hung on cylinder.Vertical and cylindrical tubular type furnace structure by ratio of height to diameter and transportation clearance because being limited, and this structure is not The requirement of large-scale molten salt furnace can be met, therefore must solve this problem in structure.
Utility model content
The purpose of this utility model is to provide a kind of molten salt furnace of split type gravity flow structure in parallel, to solve the above-mentioned back of the body The problem of being proposed in scape technology.
To achieve the above object, the utility model provides following technical scheme:
A kind of molten salt furnace of split type gravity flow structure in parallel;Including fused salt furnace body, the fused salt furnace body includes combustion Burner and vertical and cylindrical tube furnace;Radiation heating-surface and convection heating surface separate in the vertical and cylindrical tube furnace, respectively In single radiant section and convection section;Radiant section is single cylindrical coil coil pipe radiant section;Radiant section to be columnar structured, It is made up of the cylindrical coil coil pipe and upper lower header of individual layer;The convection section is designed to the snakelike tubular construction of gravity flow;Convection section It is made up of a series of coiled pipes in parallel and upper lower header, is connected between the radiant section and convection section by high-temperature flue.
As further program of the utility model:The coiled pipe is designed to that fused salt carries to outflow direction and is more than 1: 200 gradient, coiled pipe use sealing structure through walls.
As the utility model further scheme:The high-temperature flue inwall uses resistant to elevated temperatures ceramic fibre knot Structure.
As the utility model further scheme:Expansion joint is provided with the middle part of the high-temperature flue.
As the utility model further scheme:Afterbody heat exchanger is connected with the convection section.
Compared with prior art, the beneficial effects of the invention are as follows:
The utility model provides a kind of molten salt furnace of split type gravity flow structure in parallel, and it is vertical that the utility model solves tradition Formula cylindrical shape tubular type furnace structure can meet large-scale thermal power molten salt furnace pair because of the technical problem limited by ratio of height to diameter and transportation clearance The requirement of structure.
Brief description of the drawings
Fig. 1 is the structural representation of the molten salt furnace of split type gravity flow structure in parallel.
Fig. 2 be split type gravity flow structure in parallel molten salt furnace in radiant section structural representation.
Fig. 3 be split type gravity flow structure in parallel molten salt furnace in radiant section top view.
Fig. 4 be split type gravity flow structure in parallel molten salt furnace in convection section structural representation.
Fig. 5 be split type gravity flow structure in parallel molten salt furnace in convection section top view.
Embodiment
The technical scheme of this patent is described in more detail with reference to embodiment.
Refer to Fig. 1-5, a kind of molten salt furnace of split type gravity flow structure in parallel, including fused salt furnace body, the fused salt Furnace body includes burner 1 and vertical and cylindrical tube furnace;In the vertical and cylindrical tube furnace radiation heating-surface and convection current by Hot face separates, respectively in single radiant section 2 and convection section 5.Radiant section 2 is single cylindrical coil coil pipe radiant section, it Ratio of height to diameter and transportation clearance leave very big design space;Radiant section 2 is columnar structured, by the cylindrical coil of individual layer Coil pipe and upper lower header composition;The pipe diameter of spiral coil, the number of turns, helical pitch number need to be according to《Thermodynamic computing》、《Flow resistance meter in pipe Calculate》Requirement determine;The centre-to-centre spacing of spiral coil need to match with burner torch diameter, torch length;The convection section 5 is set Count into the snakelike tubular construction of gravity flow;Convection section 5 is made up of a series of coiled pipes in parallel and upper lower header, and coiled pipe is designed to melt Salt carries to outflow direction is more than 1:200 gradient, during blowing out, fused salt can flow to fused salt groove from up to down in coiled pipe;Institute The pipe diameter of convection section 5, pipe horizontal spacing, longitudinal pitch, row, the number of plies are stated, by " thermodynamic computing " " in pipe based on flow resistance Calculate " require to determine;The coiled pipe that header is drawn due to Numerous, for avoid pipe it is through walls caused by leak out, employ through walls Sealing structure;Connected between the radiant section 2 and convection section 5 by high-temperature flue 3, the inwall of high-temperature flue 3 is using resistant to elevated temperatures Ceramic fibre structure;The middle part of high-temperature flue 3 is provided with expansion joint 4;Fused salt is in parallel to enter radiant section, convection section, correct during design The helical pitch for choosing radiant section and convection section, reasonable distribution flow rate of molten salt, reduce radiant section, the thermal deviation of convection section as far as possible;For Making full use of the heat of molten salt furnace tail flue gas reduces exhaust gas temperature, is connected with afterbody heat exchanger 6 on convection section 5, finally reaches To the purpose of energy-saving and emission-reduction.
Operation principle of the present utility model is:The utility model provides a kind of fused salt of split type gravity flow structure in parallel Stove, solve traditional vertical cylindrical shape tubular type furnace structure because of the technical problem limited by ratio of height to diameter and transportation clearance, can meet big Requirement of the type thermal power molten salt furnace to structure.
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party Formula, can also be on the premise of this patent objective not be departed from one skilled in the relevant art's possessed knowledge Make a variety of changes.

Claims (5)

  1. A kind of 1. molten salt furnace of split type gravity flow structure in parallel;Including fused salt furnace body, it is characterised in that the molten salt furnace sheet Body includes burner and vertical and cylindrical tube furnace;Radiation heating-surface and convection heating surface point in the vertical and cylindrical tube furnace Open, respectively in single radiant section and convection section;Radiant section is single cylindrical coil coil pipe radiant section;Radiant section is cylinder Shape structure, it is made up of the cylindrical coil coil pipe and upper lower header of individual layer;The convection section is designed to the snakelike tubular construction of gravity flow; Convection section is made up of a series of coiled pipes in parallel and upper lower header, is connected between the radiant section and convection section by high-temperature flue Connect.
  2. 2. the molten salt furnace of split type gravity flow structure in parallel according to claim 1, it is characterised in that the coiled pipe is set Count into fused salt and carried to outflow direction and be more than 1:200 gradient, coiled pipe use sealing structure through walls.
  3. 3. the molten salt furnace of split type gravity flow structure in parallel according to claim 1, it is characterised in that the high-temperature flue Inwall uses resistant to elevated temperatures ceramic fibre structure.
  4. 4. the molten salt furnace of split type gravity flow structure in parallel according to claim 1, it is characterised in that the high-temperature flue Middle part is provided with expansion joint.
  5. 5. the molten salt furnace of split type gravity flow structure in parallel according to claim 1, it is characterised in that on the convection section It is connected with heat exchanger.
CN201720525235.1U 2017-05-12 2017-05-12 A kind of molten salt furnace of split type gravity flow structure in parallel Expired - Fee Related CN206771747U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720525235.1U CN206771747U (en) 2017-05-12 2017-05-12 A kind of molten salt furnace of split type gravity flow structure in parallel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720525235.1U CN206771747U (en) 2017-05-12 2017-05-12 A kind of molten salt furnace of split type gravity flow structure in parallel

Publications (1)

Publication Number Publication Date
CN206771747U true CN206771747U (en) 2017-12-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

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CN (1) CN206771747U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107270537A (en) * 2017-05-12 2017-10-20 常州恒大锅炉制造有限公司 A kind of split fused salt furnace apparatus and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107270537A (en) * 2017-05-12 2017-10-20 常州恒大锅炉制造有限公司 A kind of split fused salt furnace apparatus and preparation method thereof

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GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20171219

Termination date: 20210512

CF01 Termination of patent right due to non-payment of annual fee