CN205590284U - Waste heat recovery type hydrogen chloride synthesizer that resistance to corrosion is stronger - Google Patents

Waste heat recovery type hydrogen chloride synthesizer that resistance to corrosion is stronger Download PDF

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Publication number
CN205590284U
CN205590284U CN201620375416.6U CN201620375416U CN205590284U CN 205590284 U CN205590284 U CN 205590284U CN 201620375416 U CN201620375416 U CN 201620375416U CN 205590284 U CN205590284 U CN 205590284U
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China
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graphite
cooling water
hydrogen chloride
condensate sump
corrosion
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CN201620375416.6U
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杨颖�
仇晓丰
周毛荣
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Guizhou Prosperous Graphite Electromechanical Equipment Of Orchid Manufacturing Co Ltd
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Guizhou Prosperous Graphite Electromechanical Equipment Of Orchid Manufacturing Co Ltd
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    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

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Abstract

The utility model discloses a waste heat recovery type hydrogen chloride synthesizer that resistance to corrosion is stronger, including the stove bottom, be equipped with the graphite oven courage in the stove bottom, be connected with chlorine inlet on the graphite oven courage, the last hydrogen inlet that is connected with of chlorine inlet, the top of stove bottom is connected with furnace, and furnace upward is equipped with steam outlet A on the header tank including last header tank, and steam outlet A one end is connected with the flash tank, and the top of flash tank is equipped with steam outlet B, and the bottom of flash tank is equipped with cooling water inlet D, the below of going up the header tank is equipped with down the header tank, is equipped with cooling water inlet A on the lower header tank, cooling water inlet A and the flash tank is connected, is connected through a plurality of heat transfer standpipes between lower header tank and the last header tank, furnace's top is connected with the graphite heat exchanger. The utility model discloses the vapour pressure that have the recoverable synthetic heat that produces, just produces is great, and corrosive protection performance is stronger, long service life, and synthetic hydrogen chloride gas purity is high, and the cooling effect is good, assembles convenient beneficial effect.

Description

The residual heat recovery type hydrogen chloride synthetic furnace that a kind of resistance to corrosion is stronger
Technical field
This utility model relates to a kind of hydrogen chloride synthetic furnace, the residual heat recovery type hydrogen chloride synthetic furnace that a kind of resistance to corrosion is stronger。
Background technology
The development experience of hydrogen chloride synthetic furnace 3 Individual significant process, first process is the steel synthetic furnace stage, and whole burner hearth is steel design, has installed steel water leg, chlorine and hydrogen synthesizing chlorinated hydrogen in steel burner hearth outside burner hearth additional: H2+Cl2=2HCL+184.6kj/mol , a large amount of heat energy that conbustion synthesis produces are taken away by cooling down water, after cooling tower air-cooler cools down, heat are arranged in the air, steel jacket is come back to after cooling water temperature, complete cool down water reciprocation cycle, but steel synthetic furnace reaction produce substantial amounts of iron ion, affect hydrochloric acid and PVC Quality, and seriously corroded, life-span are shorter.Second process is two-into-one graphite synthesis phase, the graphitic synthetic furnace at this initial stage in stage is similar with the structure of steel stove, simply steel furnace has made graphite-structure into, graphite flue outer layer has installed steel water leg additional, utilize the water of chuck to cool down graphite flue, guarantee the safe operation of graphite flue, now, the amount of heat produced during hydrogen chloride synthesis is still row in the air, fail to recycle, but due to the corrosion resistance of graphite and to chlorine, the water content requirement of hydrogen unstrpped gas is the tightest, the hydrogen chloride gas purity of synthesis is high, the service life of stove is long, so some graphite furnace is used till today always；3rd process is to be improved on the basis of second process, and circulating cooling water temperature is improved, and in flash tank, by-product goes out steam, the heat energy produced when reclaiming major part synthetic furnace reaction.But it is big to be because graphite furnace gallbladder fragility, and tension, bending strength are relatively low, and the steam pressure of institute's output can only control 0.4MPa Hereinafter, and access the low-pressure steam pipe network connected specially, and the main steam range of factory can not be accessed.It addition, research shows that hydrogen chloride gas is being less than 108 DEG C time, can be formed condensation acid, steel systeming equipment is caused corrosion, in simultaneously synthesizing gas residual Cl 2 Chemical reaction can be produced, when the temperature of hydrogen chloride gas is higher than with ferrum 300 DEG C time, reaction rate can substantially be accelerated, equipment is caused heavy corrosion.
Summary of the invention
The purpose of this utility model is, it is provided that the residual heat recovery type hydrogen chloride synthetic furnace that a kind of resistance to corrosion is stronger.The vapour pressure that this utility model has recyclable synthetically produced heat and generation is relatively big, and the feature that anti-corrosion capability is stronger the most also has service life long, synthesising hydrogen gas purity is high, the feature of good cooling results, additionally, this utility model also has feature easy to assembly.
The technical solution of the utility model: the residual heat recovery type hydrogen chloride synthetic furnace that a kind of resistance to corrosion is stronger, includes furnace bottom, is provided with graphite flue in furnace bottom, and graphite flue connects chlorine inlet, and chlorine inlet connects hydrogen inlet；Furnace bottom be connected above burner hearth, burner hearth includes upper condensate sump, and upper condensate sump is provided with steam (vapor) outlet A , steam (vapor) outlet A Through connecting conduit A Connecting and have flash tank, the top of flash tank is provided with steam (vapor) outlet B , the bottom of flash tank is provided with cooling water inlet D ；The lower section of described upper condensate sump is provided with lower condensate sump, and lower condensate sump is provided with cooling water inlet A , cooling water inlet A Through connecting conduit B It is connected with the bottom of described flash tank, is connected through some heat exchange vertical tubes between lower condensate sump with upper condensate sump；Described burner hearth be connected above graphite heat exchanger.
The residual heat recovery type hydrogen chloride synthetic furnace that aforesaid resistance to corrosion is stronger, described graphite flue is externally provided with furnace bottom cooling steel bushing, and furnace bottom cooling steel puts and is provided with cooling water inlet B And coolant outlet B 。
The residual heat recovery type hydrogen chloride synthetic furnace that aforesaid resistance to corrosion is stronger, described graphite heat exchanger includes heat exchanger cooling steel bushing, and heat exchanger cooling steel puts and is provided with cooling water inlet C And coolant outlet C , it being provided with block block hole type graphite heat transfer block in heat exchanger cooling steel bushing, the lower section of heat exchanger cooling steel bushing outer wall is provided with syngas outlet.
The residual heat recovery type hydrogen chloride synthetic furnace that aforesaid resistance to corrosion is stronger, described upper condensate sump, lower condensate sump and heat exchange vertical tube be steel, and between adjacent heat exchange vertical tube, sealed steel bar separates.
The residual heat recovery type hydrogen chloride synthetic furnace that aforesaid resistance to corrosion is stronger, is connected through adpting flange between described furnace bottom and burner hearth and between burner hearth with graphite heat exchanger respectively.
The beneficial effects of the utility model: burner hearth of the present utility model is through upper condensate sump, lower condensate sump and the heat exchange vertical tube being connected between upper condensate sump and lower condensate sump surround, pure water enters lower condensate sump from cooling water inlet, then after heat exchange vertical tube absorbs heat, form steam and high-temperature water and enter upper condensate sump, thermodynamic cycle is relied on to flow into flash tank, steam is isolated in flash tank, flow out from steam (vapor) outlet, the recycling of heat can be realized after steam is recycled, simultaneously, it is formed closes independent heat exchange structure, arranged side by side owing to using some steel heat exchange vertical tubes, compared with at graphite flue peripheral hardware displacement thermal jacket, it has higher tension, bending strength, so, this utility model is in the case of ensureing that equipment runs safety, the steam of energy output more high-vapor-pressure, factory steam house steward can be directly accessed.
It is proven: after using this utility model, in the case of ensureing that equipment runs safety, can output 0.8-1.2MPa The steam of vapour pressure.
Meanwhile, by cooling water inlet A And steam (vapor) outlet A Upper connection flash tank, after steam enters flash tank, some vapor cooling forms the aqueous water containing certain heat, this aqueous water and cooled water inlet D Flow in lower condensate sump after the cooling water mixing of the flash tank flowed into, by controlling to flow into the temperature of the cooling water in lower header so that it is be maintained at 108-200 Between (generally exist 180 About DEG C), now the temperature of heat exchange vertical tube outer surface about exists 250 About DEG C, it is far above 108 DEG C, also it is far below simultaneously 300 DEG C, reduce the extent of corrosion that equipment is caused by high temperature and low temperature, improve corrosion resistance of the present utility model, the service life of equipment is extended at least 3-5 Year.
Additionally, this utility model is by being set to furnace bottom by synthetic furnace, burner hearth and three sections of heat exchanger, graphite flue is set in furnace bottom, chlorine and hydrogen burn at graphite flue internal combustion, cooling water generation heat exchange in entering back into burner hearth after the hydrogen chloride gas that burning is formed and in heat exchange vertical tube, avoid chlorine and hydrogen and directly at stove chamber inner combustion, burner hearth caused corrosion and burn, improve resistance to corrosion of the present utility model and service life, and due to the corrosion resistance of graphite flue and to chlorine, the water content requirement of hydrogen unstrpped gas is the tightest, the hydrogen chloride gas purity of synthesis is high；Simultaneously by arranging graphite heat exchanger again at the top of burner hearth, further the temperature of forming gas is reduced, improve cooling effect of the present utility model.
Additionally, this utility model is by putting furnace bottom cooling steel bushing at graphite flue peripheral hardware, graphite flue is cooled down, it is to avoid graphite flue is damaged by high temperature, further increases service life of the present utility model；Simultaneously as forming gas temperature after burner hearth cools down still exists 250 About DEG C, common heat exchanger one is that cooling effect is poor, two is that heat-resisting ability is poor, therefore, this utility model by being configured with heat exchanger cooling steel bushing and the structure of block block hole type graphite heat transfer block by graphite heat exchanger, and the heat-resisting ability of block block hole type graphite heat transfer block is strong, simultaneously, cooling down water after being passed through cooling water in heat exchanger cooling steel bushing to flow in block block hole type graphite heat transfer block and synthesis gas heat-shift, the heat of synthesis gas is reduced to the most at last 40 About DEG C, therefore, this utility model has good cooling effect and longer service life.
Furthermore, owing to upper lower condensate sump of the present utility model and heat exchange vertical tube all use steel, and the hydrogen chloride gas in the burner hearth of steel is less than in temperature 108 Time below DEG C, hydrogen chloride condensed acid can be formed on steel hearth wall, corrode heat exchange vertical tube, so 32 Pure water about DEG C adds from flash tank, and in flash tank 180 Formed after the mixing of DEG C high-temperature water 135 ℃ -165 DEG C hot water, enter from lower condensate sump, it is to avoid the formation of condensation acid.And owing to cooling water water temperature after cooling water inlet enters lower condensate sump is relatively low, if heat exchange vertical tube is mutually juxtaposed contact, the local temperature that the tube and tube below heat exchange vertical tube will certainly be caused to contact is relatively low and easily produces condensation acid, therefore, heat exchange vertical tube is separated by this utility model by utilizing sealing steel bar, seal the temperature that steel bar can keep higher, the place making the contact of the heat exchange vertical tube contacted therewith also can keep higher temperature, reduce the formation of condensation acid, further enhancing the resistance to corrosion of burner hearth.
Finally, respectively through Flange joint between furnace bottom of the present utility model, burner hearth and furnace roof (graphite heat exchanger), connect simplicity, install quickly.
In sum, the vapour pressure that this utility model has recyclable synthetically produced heat and generation is bigger, the beneficial effect that anti-corrosion capability is stronger, the most also there is service life long, synthesising hydrogen gas purity is high, the beneficial effect of good cooling results, additionally, this utility model also has beneficial effect easy to assembly.
Accompanying drawing explanation
Accompanying drawing 1 For structural representation of the present utility model；
Accompanying drawing 2 Structural representation for burner hearth；
Accompanying drawing 3 View in transverse section for burner hearth.
Description of reference numerals: 1- Upper condensate sump, 2- Lower condensate sump, 3- Heat exchange vertical tube, 4- Steam (vapor) outlet A , 5- Cooling water inlet A , 6- Seal steel bar, 7- Graphite flue, 8- Chlorine inlet, 9- Hydrogen inlet, 10- Furnace bottom cooling steel bushing, 11- Coolant outlet B , 12- Cooling water inlet B , 13- Heat exchanger cooling steel bushing, 14- Cooling water inlet C , 15- Coolant outlet C , 16- Block cellular type Graphite heat exchange block, 17- Syngas outlet, 18- Adpting flange, 19- Connect conduit A , 20- Flash tank, 21- Cooling water inlet D , 22- Connect conduit B , 23- Steam (vapor) outlet B 。
Detailed description of the invention
Embodiment of the present utility model: the residual heat recovery type hydrogen chloride synthetic furnace that a kind of resistance to corrosion is stronger, such as accompanying drawing 1-3 Shown in, include furnace bottom, in furnace bottom, be provided with graphite flue 7 , graphite flue 7 Upper connection has chlorine inlet 8 , chlorine inlet 8 Upper connection has hydrogen inlet 9 ；Furnace bottom be connected above burner hearth, burner hearth includes upper condensate sump 1 , upper condensate sump 1 It is provided with steam (vapor) outlet A4 , steam (vapor) outlet A4 Through connecting conduit A19 Connect and have flash tank 20 , flash tank 20 Top be provided with steam (vapor) outlet B23 , flash tank 20 Bottom be provided with cooling water inlet D21 ；Described upper condensate sump 1 Lower section be provided with lower condensate sump 2 , lower condensate sump 2 It is provided with cooling water inlet A5 , cooling water inlet A5 Through connecting conduit B22 With described flash tank 20 Bottom connect, lower condensate sump 2 With upper condensate sump 1 Between through some heat exchange vertical tubes 3 Connect (heat exchange vertical tube 3 Two ends be respectively welded at upper condensate sump 1 And lower condensate sump 2 On, and upper condensate sump 1 , heat exchange vertical tube 3 And lower condensate sump 2 In the conduction state)；Described burner hearth be connected above graphite heat exchanger.
Described graphite flue 7 It is externally provided with furnace bottom cooling steel bushing 10 , furnace bottom cooling steel bushing 10 It is provided with cooling water inlet B12 And coolant outlet B11 。
Described graphite heat exchanger includes heat exchanger cooling steel bushing 13 , heat exchanger cooling steel bushing 13 It is provided with cooling water inlet C14 And coolant outlet C15 , heat exchanger cooling steel bushing 13 Inside it is provided with block block hole type graphite heat transfer block 16 , heat exchanger cooling steel bushing 13 The lower section of outer wall is provided with syngas outlet 17 。
Described upper condensate sump 1 , lower condensate sump 2 With heat exchange vertical tube 3 It is steel, adjacent heat exchange vertical tube 3 Between sealed steel bar 6 Separate and (seal steel bar 6 With heat exchange vertical tube 3 Between use welding manner connect).
Respectively through adpting flange between described furnace bottom and burner hearth and between burner hearth and graphite heat exchanger 18 Connect.
Operation principle of the present utility model: chlorine and hydrogen pass through chlorine inlet 8 And hydrogen inlet 9 It is passed through graphite flue 7 In, and at graphite flue 7 Interior burning forms hydrogen chloride gas, and in combustion process, cooling water is from cooling water inlet B12 Flow into furnace bottom cooling steel bushing 10 In, to graphite flue 7 Cool down, from coolant outlet after cooling water absorption heat B Flow out；The hydrogen chloride gas that burning produces enters in burner hearth, and now cooling water is from cooling water inlet A5 Enter lower condensate sump 2 In, then flow through heat exchange vertical tube 3 Rear entrance upper condensate sump 1 In, cooling water is flowing through heat exchange vertical tube 3 When with the hydrogen chloride gas generation heat exchange in burner hearth, absorb and form steam after heat, and from steam (vapor) outlet A4 Flow out, through connecting conduit A19 Flow into flash tank 20 In, major part steam is through steam (vapor) outlet B23 Flow into the main steam range of factory , The cooling water with certain heat, this part cooling water and cooled water inlet is formed after some vapor cooling D21 Flow into flash tank 20 Cooling water mixing and through connect conduit B22 Flow into lower condensate sump 2 In, owing to when this cooling water is initial, limit has certain temperature, and exist by controlling this temperature 180 About DEG C, it is to avoid the gas heat exchanging vertical tube in burner hearth 3 Causing high temperature corrosion or cold end corrosion, the hydrogen chloride gas after cooling enters in graphite heat exchanger, and from block block hole type graphite heat transfer block 16 Interior space rises to the top of heat exchanger, is back to downwards the bottom of heat exchanger, cool down steel bushing from heat exchanger 13 Syngas outlet below outer wall 17 Flowing out, meanwhile, cooling water is from cooling water inlet C14 Flow in graphite heat exchanger with hydrogen chloride gas generation heat exchange, take away after amount of heat from coolant outlet C15 Flow out, and forming gas extends gas residence time in heat exchanger during raising and lowering, improves heat transfer effect.

Claims (5)

1. the residual heat recovery type hydrogen chloride synthetic furnace that a resistance to corrosion is stronger, it is characterized in that: include furnace bottom, being provided with graphite flue (7) in furnace bottom, the upper connection of graphite flue (7) has chlorine inlet (8), and the upper connection of chlorine inlet (8) has hydrogen inlet (9)；Furnace bottom be connected above burner hearth, burner hearth includes upper condensate sump (1), upper condensate sump (1) is provided with steam (vapor) outlet A(4), steam (vapor) outlet A(4) through connect conduit A(19) connect have flash tank (20), the top of flash tank (20) is provided with steam (vapor) outlet B(23), the bottom of flash tank (20) is provided with cooling water inlet D(21)；The lower section of described upper condensate sump (1) is provided with lower condensate sump (2), lower condensate sump (2) is provided with cooling water inlet A(5), cooling water inlet A(5) through connecting conduit B(22) be connected with the bottom of described flash tank (20), it is connected through some heat exchange vertical tubes (3) between lower condensate sump (2) with upper condensate sump (1)；Described burner hearth be connected above graphite heat exchanger.
The residual heat recovery type hydrogen chloride synthetic furnace that resistance to corrosion the most according to claim 1 is stronger, it is characterized in that: described graphite flue (7) is externally provided with furnace bottom cooling steel bushing (10), furnace bottom cooling steel bushing (10) is provided with cooling water inlet B(12) and coolant outlet B(11).
The residual heat recovery type hydrogen chloride synthetic furnace that resistance to corrosion the most according to claim 1 is stronger, it is characterized in that: described graphite heat exchanger includes heat exchanger cooling steel bushing (13), heat exchanger cooling steel bushing (13) is provided with cooling water inlet C(14) and coolant outlet C(15), being provided with block block hole type graphite heat transfer block (16) in heat exchanger cooling steel bushing (13), the lower section of heat exchanger cooling steel bushing (13) outer wall is provided with syngas outlet (17).
The residual heat recovery type hydrogen chloride synthetic furnace that resistance to corrosion the most according to claim 1 is stronger, it is characterized in that: described upper condensate sump (1), lower condensate sump (2) and heat exchange vertical tube (3) are steel, and between adjacent heat exchange vertical tube (3), sealed steel bar (6) separates.
The residual heat recovery type hydrogen chloride synthetic furnace that resistance to corrosion the most according to claim 1 is stronger, it is characterised in that: it is connected through adpting flange (18) respectively between described furnace bottom and burner hearth and between burner hearth with graphite heat exchanger.
CN201620375416.6U 2016-04-28 2016-04-28 Waste heat recovery type hydrogen chloride synthesizer that resistance to corrosion is stronger Active CN205590284U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105923605A (en) * 2016-04-28 2016-09-07 贵州兰鑫石墨机电设备制造有限公司 Waste heat-recovery hydrogen chloride synthesis furnace with strong anticorrosion capability

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105923605A (en) * 2016-04-28 2016-09-07 贵州兰鑫石墨机电设备制造有限公司 Waste heat-recovery hydrogen chloride synthesis furnace with strong anticorrosion capability

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