CN203095621U - Special waste heat utilization device in production process of sodium hexametaphoshpate - Google Patents
Special waste heat utilization device in production process of sodium hexametaphoshpate Download PDFInfo
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- CN203095621U CN203095621U CN2013200446352U CN201320044635U CN203095621U CN 203095621 U CN203095621 U CN 203095621U CN 2013200446352 U CN2013200446352 U CN 2013200446352U CN 201320044635 U CN201320044635 U CN 201320044635U CN 203095621 U CN203095621 U CN 203095621U
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- heat
- drum
- smoke box
- production process
- sodium hexametaphosphate
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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
- 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 utilization device in a production process of sodium hexametaphoshpate and relates to the field of heat energy recycling. The waste heat utilization device comprises a steam drum, a steam valve, a water inlet, a liquid level meter interface, an inspection manhole and a sewage discharging interface which are arranged on the steam drum, and a waste heat recover, wherein the waste heat recoverer consists of a smoke box and a plurality of heat exchange tubes, upper sections of the heat exchange tubes are smooth tube sections, lower sections of the heat exchange tubes are finned sections on which fins are welded, the smooth tube sections are inserted into the steam drum and welded with the steam drum in a sealing way to form a closed heat releasing area, and the finned sections are placed in the smoke box to form a closed heat absorption area with the smoke box. The waste heat utilization device can be used for effectively recycling the waste heat in exhaust gas in the production process of the sodium hexametaphoshpate and used for heating water in the steam drum to produce steam for posts with steam demand to use in a production link so as to achieve the purpose of reducing the production cost, simultaneously reduce the content of acidic gas and dust in the exhaust gas, and then reduce the corrosion of the exhaust gas to pipelines and the pollution of the exhaust gas to the environment.
Description
Technical field
The utility model relates to the heat energy recycle field, is specifically related to residual heat using device in a kind of sodium hexametaphosphate production process.
Background technology
Sodium hexametaphosphate claims Glan Durham salt again, is mainly used in food improver and industrial water softening and handles.The production method of sodium hexametaphosphate mainly contains two kinds of SODIUM PHOSPHATE, MONOBASIC method and Vanadium Pentoxide in FLAKES methods: 1. SODIUM PHOSPHATE, MONOBASIC method: soda ash and phosphoric acid carry out neutralization reaction and generate sodium dihydrogen phosphate under 80～100 ℃, and through evaporation concentration, crystallisation by cooling obtains sodium dihydrogen phosphate dihydrate, sodium dihydrogen phosphate dihydrate is sloughed crystal water and water of constitution generation sodium-metaphosphate at 110～250 ℃, further be heated to 620 ℃ and aggregate into sodium hexametaphosphate, the sodium hexametaphosphate melt draws off behind the stop 15-20min down in 700 ℃ in polymerization furnace, film-making when being cooled to 60～80 ℃ rapidly, melt solidifying becomes transparent flint glass shape fritter (little band is green during impurity such as iron content), makes the sodium hexametaphosphate finished product through pulverizing; 2. Vanadium Pentoxide in FLAKES method: Vanadium Pentoxide in FLAKES and soda ash is hybrid reaction and thermal dehydration by a certain percentage, carry out high temperature (750～850 ℃) polyreaction, quenching generates glass sodium hexametaphosphate, makes industrial sodium hexametaphosphate finished product through pulverizing rapidly then.
In the sodium hexametaphosphate production process, from producing a large amount of tail gas that pipeline is discharged, general temperature is up to more than 350 ℃.The exhaust gas component complexity contains more water vapour, sour gas (as Vanadium Pentoxide in FLAKES), also carries a certain amount of Sodium hexametaphosphate 99 feed liquid secretly.This tail gas has the advantages that corrodibility is strong, dust concentration is high, adhesion is strong, can't effectively be utilized.Mostly sodium hexametaphosphate enterprise has all been selected directly towards the sky discharging, and this has not only caused wasting of a large amount of heat energy, returns the exhaust pipe road and causes great corrosion and contaminate environment seriously.
The utility model content
At the defective that exists in the prior art, the purpose of this utility model is to provide residual heat using device in a kind of sodium hexametaphosphate production process, it in use can reclaim the using waste heat from tail gas in the sodium hexametaphosphate production effectively and be used for heating the water generates water vapor of drum, use for the steam demand post in the production link, reduce production costs; Can also reduce simultaneously the content of sour gas and dust in the tail gas, thereby alleviate tail gas to the corrosion of transport pipe with to the pollution of environment.
For reaching above purpose, the technical scheme that the utility model is taked is: residual heat using device in a kind of sodium hexametaphosphate production process, it is characterized in that: comprise drum and the waste-heat recoverer that is arranged under the drum, described waste-heat recoverer is made up of smoke box and Duo Gen heat transfer tube, the epimere of heat transfer tube is the light pipe section, the light pipe section is inserted described drum and is formed the sealing heat release zone with the drum welded seal, the hypomere of heat transfer tube is the fin section that is welded with fin, and the fin section places in the described smoke box and with smoke box forms sealing heat absorption district.
On the basis of technique scheme: the top of described drum is provided with a plurality of steam valves, and the drum sidepiece is provided with water-in, and an end of drum is provided with interface of the level gauge, and the other end of drum is provided with inspection manhole, and the bottom of drum is provided with the blowdown interface.
On the basis of technique scheme: described drum is installed on the smoke box of waste-heat recoverer, and welded seal between drum and the smoke box.
On the basis of technique scheme: the fin section surface of described heat transfer tube has the fire resistant anticorrosive layer.
On the basis of technique scheme: described fire resistant anticorrosive layer is the functional coating of plasma method preparation.
On the basis of technique scheme: leave spacing between the described many heat transfer tubes.
On the basis of technique scheme: casing one end of described smoke box is provided with the tail gas import, and the casing the other end is provided with the tail gas outlet.
On the basis of technique scheme: be provided with deashing device in the casing of described smoke box, the casing side is provided with soot door.
On the basis of technique scheme: the bottom half of described smoke box is provided with sewage draining exit.
On the basis of technique scheme: the casing of described smoke box is a metallic substance, and box inside studs with lagging material.
The beneficial effects of the utility model are:
1. waste-heat recoverer is provided with many heat transfer tubes in the utility model, and the hypomere of heat transfer tube is welded with fin, and fin can increase heating surface, improve heat transfer efficiency, and the box inside of smoke box studs with lagging material, is used for heat insulating, can further prevent the loss of heat.The heat that waste-heat recoverer reclaims passes to water in the drum through the light pipe section of heat transfer tube, and the water endothermic conversion in the drum is steam and incorporates the production pipeline into by steam valve, is supplied to the steam demand post on the sodium hexametaphosphate production line to use.Therefore, the exhaust heat-energy in can the effective recycling sodium hexametaphosphate producing for the energy has been saved in production, thereby reduces production cost of products.
2. waste-heat recoverer is made up of smoke box and Duo Gen heat transfer tube in the utility model, the fin section of heat transfer tube places in the smoke box and with smoke box forms sealing heat absorption district, tail gas enters sealing heat absorption Qu Houhui by transport pipe and is subjected to the fin section of heat transfer tube and stopping of smoke box inwall, dust a large amount of in the tail gas are through stopping the fin section and the smoke box inwall that can accumulate in heat transfer tube, dust content from the tail gas that sealing heat absorption district discharges can reduce greatly, has alleviated the pollution of the dust in the tail gas to environment.
3. leave certain spacing between the heat transfer tube in the utility model, and be provided with automatic ash removing device in the casing of smoke box, automatic ash removing device can timely online removing accumulates in the dust on the fin section of smoke box inwall and heat transfer tube, spacing between the assurance heat transfer tube is not stopped up by dust, thereby reduce the resistance that tail gas is transmitted, it is unimpeded to guarantee that tail gas flows in sealing heat absorption district, has not susceptible to plugging characteristics.
4. the fin section surface of heat transfer tube has the fire resistant anticorrosive layer, and erosion resistance is strong.
5. the utility model is in use owing to recycled the heat of tail gas in the sodium hexametaphosphate production fully, therefore the temperature of tail gas can significantly reduce, and then cause in the tail gas a large amount of sour gas to form acid drop and drop to the smoke box bottom, discharge through the bottom half sewage draining exit of smoke box then.Therefore reduced the content of tail gas middle acid substance, thereby alleviated the corrosion of tail gas, prolonged the work-ing life in exhaust pipe road, also reduced in the tail gas sour gas simultaneously the pollution of environment to transport pipe.
Description of drawings
Fig. 1 is the partial schematic sectional view of residual heat using device in the utility model embodiment sodium hexametaphosphate production process;
Fig. 2 is the partial enlarged drawing of A part among Fig. 1;
Fig. 3 is the partial schematic sectional view of Fig. 1 left view.
Reference numeral: 1-drum, 2-waste-heat recoverer, 3-steam valve, the 4-water-in, 5-interface of the level gauge, 6-inspection manhole, 7-blowdown interface, 8-heat transfer tube, 81-light pipe section, 82-fin section, 83-welding joint, 9-fin, the 10-smoke box, 11-deashing device, 12-soot door, the 13-sewage draining exit, the import of 14-tail gas, the outlet of 15-tail gas.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
As Fig. 1, Fig. 2 and shown in Figure 3, residual heat using device in the sodium hexametaphosphate production process of the present utility model comprises drum 1 and waste-heat recoverer 2, and drum 1 is installed on the waste-heat recoverer 2.Drum 1 side is provided with water-in 4, is drum 1 supply operating water by water-in 4.Drum 1 top is provided with a plurality of steam valves 3, and the steam that produces in the drum 1 enters the production pipeline by steam valve 3.One end of drum 1 is provided with interface of the level gauge 5, and the other end is provided with inspection manhole 6.Drum 1 bottom also is provided with blowdown interface 7, is used for discharging sewage and impurity in the drum 1.Waste-heat recoverer 2 is made up of smoke box 10 and Duo Gen heat transfer tube 8.In the present embodiment, drum 1 is installed on the smoke box 10 of waste-heat recoverer 2, and welded seal between drum 1 and the smoke box 10.The epimere of heat transfer tube 8 is a light pipe section 81, and the lower end of light pipe section 81 is connected to welding joint 83, and the hypomere of heat transfer tube 8 is the fin section 82 that is welded with fin 9.Drum 1 is connected with smoke box 10 sealings, and light pipe section 81 is inserted drum 1, and forms the sealing heat release zone with drum 1 at welding joint 83 place's welded seals, and fin section 82 places in the smoke box 10 and with smoke box 10 forms sealing heat absorption district.Heat transfer tube 8 is a metal material, and its fin section 82 surfaces have the fire resistant anticorrosive layer, and this fire resistant anticorrosive layer is with the functional coating of plasma method preparation in this example, has very strong corrosion resistance nature.Also leave spacing between the heat transfer tube 8, can prevent that the dust that gathers from stopping up waste-heat recoverer, reduces the resistance that tail gas is transmitted.Fin 9 can be common fin, also can be the fin of band disturbance function, and its major function is to increase heating surface area, enhanced heat exchange efficient.Casing one end of smoke box 10 is provided with tail gas import 14, and the other end is provided with tail gas outlet 15.Be provided with deashing device 11 in the casing of smoke box 10, deashing device 11 can online timely removing accumulate in the fin section 82 of heat transfer tube 8 and the dust of smoke box 10 inwalls, prevents that dust from forming obstruction.The casing side of smoke box 10 is provided with soot door 12, and bottom half is provided with sewage draining exit 13.The casing of smoke box 10 is a metallic substance, and box inside studs with lagging material, can further prevent calorific loss, enhanced heat exchange efficient.
The working process of the utility model embodiment is as follows:
The utility model is installed in the tail gas delivery conduit of sodium hexametaphosphate production line: steam valve 3 is connected with the production seal for pipe joints, and tail gas import 14 is tightly connected with the exhaust pipe road, and tail gas outlet 15 is tightly connected with the tail gas outlet conduit.Liquidometer is installed at interface of the level gauge 5 places, is given drum 1 supply operating water by water-in 4 then.The high-temperature tail gas of discharging in the sodium hexametaphosphate production causes tail gas import 14 through transport pipe, and then the fin section 82 that enters many heat transfer tubes 8 is absorbed heat regional with the sealing that smoke box 9 is formed, at this moment, high-temperature tail gas begins to exchange the fin section 82 of heat pipe 8 and washes away heat exchange, fin section 82 arrives light pipe section 81 by inner loop mode with transfer of heat after the conduction heat absorption, light pipe section 81 is again with the water in these heat transferred drums 1.Water in the drum 1 is converted into water vapor after heat absorption, and enters the production pipeline by steam valve 3, uses for the steam demand post on the sodium hexametaphosphate production line.Simultaneously, the dust that 11 pairs of deashing devices accumulate in heat transfer tube 8 fin sections 82 and smoke box 10 inwalls carries out on-line automatic cleaning, and the dust of whereabouts is discharged by sewage draining exit 13.After the tail gas outlet 15 of tail gas after the heat exchange through residual heat using device, carry by outlet conduit again, and guide to chimney through induced draft fan and discharge.In the working process, understand water level in the drum 1 at any time, need to judge whether moisturizing according to the liquidometer display data.
The utility model not only is confined to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but on its shape or structure, do any variation; every have identical with a utility model or akin technical scheme, all within its protection domain.
Claims (10)
1. residual heat using device in the sodium hexametaphosphate production process, it is characterized in that: comprise drum and the waste-heat recoverer that is arranged under the drum, described waste-heat recoverer is made up of smoke box and Duo Gen heat transfer tube, the epimere of heat transfer tube is the light pipe section, the light pipe section is inserted described drum and is formed the sealing heat release zone with the drum welded seal, the hypomere of heat transfer tube is the fin section that is welded with fin, and the fin section places in the described smoke box and with smoke box forms sealing heat absorption district.
2. residual heat using device in a kind of sodium hexametaphosphate production process according to claim 1, it is characterized in that: the top of described drum is provided with a plurality of steam valves, the drum sidepiece is provided with water-in, one end of drum is provided with interface of the level gauge, the other end of drum is provided with inspection manhole, and the drum bottom is provided with the blowdown interface.
3. residual heat using device in a kind of sodium hexametaphosphate production process according to claim 1, it is characterized in that: described drum is installed on the smoke box of waste-heat recoverer, and welded seal between drum and the smoke box.
4. residual heat using device in a kind of sodium hexametaphosphate production process according to claim 1 is characterized in that: the fin section surface of described heat transfer tube has the fire resistant anticorrosive layer.
5. residual heat using device in a kind of sodium hexametaphosphate production process according to claim 4 is characterized in that: described fire resistant anticorrosive layer is the functional coating of plasma method preparation.
6. residual heat using device in a kind of sodium hexametaphosphate production process according to claim 1 is characterized in that: leave spacing between the described many heat transfer tubes.
7. residual heat using device in a kind of sodium hexametaphosphate production process according to claim 1 is characterized in that: casing one end of described smoke box is provided with the tail gas import, and the casing the other end is provided with the tail gas outlet.
8. residual heat using device in a kind of sodium hexametaphosphate production process according to claim 7 is characterized in that: be provided with deashing device in the casing of described smoke box, the casing side is provided with soot door.
9. residual heat using device in a kind of sodium hexametaphosphate production process according to claim 8, it is characterized in that: the bottom half of described smoke box is provided with sewage draining exit.
10. according to residual heat using device in claim 1 or 7 or the 8 or 9 described a kind of sodium hexametaphosphate production processes, it is characterized in that: the casing of described smoke box is a metallic substance, and box inside studs with lagging material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200446352U CN203095621U (en) | 2013-01-28 | 2013-01-28 | Special waste heat utilization device in production process of sodium hexametaphoshpate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200446352U CN203095621U (en) | 2013-01-28 | 2013-01-28 | Special waste heat utilization device in production process of sodium hexametaphoshpate |
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| CN203095621U true CN203095621U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013200446352U Expired - Lifetime CN203095621U (en) | 2013-01-28 | 2013-01-28 | Special waste heat utilization device in production process of sodium hexametaphoshpate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105110309A (en) * | 2015-09-08 | 2015-12-02 | 武汉东晟捷能科技有限公司 | Comprehensive utilization system for heat energy of flue gas generated in production of sodium tripolyphosphate |
| CN112573561A (en) * | 2020-12-08 | 2021-03-30 | 萍乡宝海锌营养科技有限公司 | Waste heat recovery device for zinc sulfate production |
-
2013
- 2013-01-28 CN CN2013200446352U patent/CN203095621U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105110309A (en) * | 2015-09-08 | 2015-12-02 | 武汉东晟捷能科技有限公司 | Comprehensive utilization system for heat energy of flue gas generated in production of sodium tripolyphosphate |
| CN105110309B (en) * | 2015-09-08 | 2017-05-31 | 武汉东晟捷能科技有限公司 | Smoke heat energy utilization system for producing sodium tripolyphosphate |
| CN112573561A (en) * | 2020-12-08 | 2021-03-30 | 萍乡宝海锌营养科技有限公司 | Waste heat recovery device for zinc sulfate production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Special waste heat utilization device in production process of sodium hexametaphoshpate Effective date of registration: 20160906 Granted publication date: 20130731 Pledgee: Guanggu Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: WUHAN DONGSHENG JIENENG TECHNOLOGY Co.,Ltd. Registration number: 2016420000035 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180731 Granted publication date: 20130731 Pledgee: Guanggu Branch of Wuhan Rural Commercial Bank Co.,Ltd. Pledgor: WUHAN DONGSHENG JIENENG TECHNOLOGY Co.,Ltd. Registration number: 2016420000035 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |
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| CX01 | Expiry of patent term |