CN105036079A - System and method for improving heat exchange effects of graphite blocks in HCl synthetic furnace with byproduct steam - Google Patents
System and method for improving heat exchange effects of graphite blocks in HCl synthetic furnace with byproduct steam Download PDFInfo
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- CN105036079A CN105036079A CN201510325319.6A CN201510325319A CN105036079A CN 105036079 A CN105036079 A CN 105036079A CN 201510325319 A CN201510325319 A CN 201510325319A CN 105036079 A CN105036079 A CN 105036079A
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Abstract
The invention relates to a system and method for improving the heat exchange effects of graphite blocks in an HCl synthetic furnace with byproduct steam. The method comprises the steps that water in a first water tank enters the lower end of a circulating water section of a synthetic furnace after undergoing heat exchange in a heat exchanger, then comes out from the upper end of the circulating water section of the synthetic furnace and returns to the first water tank; hot water in the middle of the circulating water section of the synthetic furnace enters a second water tank, and the hot water in the second water tank returns to the synthetic furnace and generates low-pressure steam under the pressurization action of a first water pump. The system and the method have the beneficial technical effects that the water in the second water tank comes from the middle section of the circulating water in the synthetic furnace and has higher temperature, and the hot water enters the synthetic furnace to generate steam under the pressure of the first water pump, thus effectively utilizing the heat in the circulating water and saving the extra heating cost; pure water is used instead of original industrial water and contains little calcium and magnesium ions and silt, so that scaling and blockage are avoided, thus prolonging the service life of equipment and then greatly reducing the accident danger coefficient and reducing the installation and maintenance costs of the equipment.
Description
Technical field
The invention belongs to chlor-alkali field, be specifically related to a kind of system and method improving byproduct steam HCl synthetic furnace graphite block heat transfer effect.
Background technology
Chlor-alkali industry at home, the byproduct steam graphitic synthetic furnace burning zone graphite block of synthesising hydrogen generally adopts recirculated water heat exchange, in recirculated water containing silt and calcium ions and magnesium ions many, easily cause the blocking of heat exchange eyelet and the fouling harm such as seriously of furnace base graphite block, the high calorie causing chlorine hydrogen burning to release does not distribute, and makes the base temperature of synthetic furnace higher.Because graphite block operating index is harsh, the higher meeting of base temperature of synthetic furnace causes the resin wear of graphite block explosion and graphite block surface impregnation.
Graphite block explosion causes recirculated water to enter in a large number in stove, causes stove to explode, if operative employee reacts slow, seriously can cross chlorine and cause chloroethylene synthesizing converter to explode, for chlor-alkali, producer brings about great losses.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of system and method improving byproduct steam HCl synthetic furnace graphite block heat transfer effect is provided.
In order to solve above technical problem, technical scheme of the present invention is:
A kind of system improving byproduct steam HCl synthetic furnace graphite block heat transfer effect, comprise the first water pot, heat-exchanger rig, synthetic furnace and the second water pot, wherein, the outlet of described first water pot is connected by the lower inlet of interchanger with synthetic furnace recirculated water section, the upper end outlet of synthetic furnace recirculated water section is connected with the entrance of the first water pot, the middle part of synthetic furnace recirculated water section is communicated with the second water pot, second water pot is communicated by the lower end of the first water pump with synthetic furnace steam jacket, hot water in second water pot, by described first water pump pressurization, produces steam in synthetic furnace.
Preferably, described first water pot supplements water level by the first variable valve.
Preferably, connected by the second water pump between described first water pump and heat-exchanger rig.
Preferably, the second variable valve is provided with between described synthetic furnace and the second water pump.
A kind of method improving byproduct steam HCl synthetic furnace graphite block heat transfer effect, comprise the steps: that water in the first water pot is after interchanger heat exchange, enter the lower end of the recirculated water section of synthetic furnace, in upper end outlet backwater to the first water pot then by the recirculated water section of synthetic furnace; Hot water in the middle part of synthetic furnace recirculated water section enters in the second water pot, and the hot water in the second water pot, under the pressurization of the first water pump, returns synthetic furnace, produces low-pressure steam.
Preferably, the temperature of water after interchanger heat exchange in described first water pot is 25-35 DEG C.
Preferably, the flow that the water in described first water pot enters synthetic furnace is 45-55m
3/ h.
Preferably, the pressure of described first water pump is 0.3-0.4Mpa.
Preferably, the hot water flow entered in synthetic furnace in described second water pot is 20-25m
3/ h.
Preferably, the pressure of described low-pressure steam is 0.23-0.260Mpa.
Preferably, described water is through RO membrane filtration purifying treatment.
Advantageous Effects of the present invention is:
1, the water in the present invention in the second water pot is from the stage casing of synthetic furnace recirculated water, chlorine, the hydrogen chemosynthesis reaction in synthetic furnace releases large calorimetric, pure water water temperature after furnace bottom and middle part heat exchange obviously raises, hot water enters synthetic furnace and produces steam under the pressure of the first water pump, effectively make use of the heat in recirculated water, save extra heating expense.
2, pure water is used to replace original process water in the present invention, because the amount of calcic, magnesium ion and silt in pure water is little, without fouling and clogging phenomenon, improve the work-ing life of equipment, and then greatly reduce accident hazard coefficient, decrease the installation and maintenance expense of equipment.
3, the application not only effectively make use of the heat of recirculated water, also effectively increases quantity of steam, need not changing former pure water water supply line bore and working shaft ability, without the need to carrying out large improvement to process pipe, greatly saving expense.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein, the 1, first water pot, 2, interchanger, 3, synthetic furnace, the 4, second water pot.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Figure 1, a kind of system improving byproduct steam HCl synthetic furnace graphite block heat transfer effect, comprise the first water pot 1, interchanger 2, synthetic furnace 3 and the second water pot 4, wherein, the outlet of described first water pot 1 is connected by the lower inlet of interchanger 2 with synthetic furnace 3 recirculated water section, the upper end outlet of synthetic furnace 3 recirculated water section is connected with the entrance of the first water pot 1, the middle part of synthetic furnace 3 recirculated water section is communicated with the second water pot 4, second water pot 4 is communicated with the steam jacket lower end of synthetic furnace 3 by the first water pump, hot water in second water pot 4 is by described first water pump pressurization, steam is produced in synthetic furnace 3.
First water pot 1 supplements water level by the first variable valve, is connected, be provided with the second variable valve between synthetic furnace 3 and the second water pump between the first water pump and interchanger 2 by the second water pump.
Embodiment 1
Pure water in first water pot 1 is after interchanger 2 heat exchange, and temperature is 34 DEG C, enters the lower end of the recirculated water section of synthetic furnace 3, and the flow of water is 45m
3/ h, in upper end outlet backwater to the first water pot 1 then by the recirculated water section of synthetic furnace 3; Hot water in the middle part of synthetic furnace 3 recirculated water section enters in the second water pot 4, and the temperature of hot water is 50 DEG C, and the hot water in the second water pot 4 is under the pressurization of the first water pump, and the pressure of the first water pump is 0.34Mpa, returns synthetic furnace 3, and hot water flow is 23m
3/ h, produce low-pressure steam, the pressure of steam is 0.23-0.26Mpa.
Be back to water cooling tower cooling after former recirculated water heat exchange, heat wastes, comparatively good utilisation heat after transformation, separate unit stove byproduct steam total amount increase about 0.55 ton/hour, altogether 6 synthetic furnaces, is roughly equal to the benefit that the annual quantity of steam increased produces:
0.55 ton/hour × 8000 hours × 150 yuan/ton × 6=3,960,000 yuan.
After synthetic furnace pure water has been transformed, the equipment for synthetic furnace loses and maintenance and installation expense reduces 1,000,000 yuan, and reduce accident hazard coefficient greatly, ensures the safety of operator, and safety coefficient increases.
Embodiment 2
Pure water in first water pot 1 is after interchanger 2 heat exchange, and temperature is 27 DEG C, enters the lower end of the recirculated water section of synthetic furnace 3, and the flow of water is 50m
3/ h, in upper end outlet backwater to the first water pot 1 then by the recirculated water section of synthetic furnace 3; Hot water in the middle part of synthetic furnace 3 recirculated water section enters in the second water pot 4, and the temperature of hot water is 45 DEG C, and the hot water in the second water pot 4 is under the pressurization of the first water pump, and the pressure of the first water pump is 0.36Mpa, returns synthetic furnace 3, and hot water flow is 22m
3/ h, produce low-pressure steam, the pressure of steam is 0.23-0.260Mpa.
Be back to water cooling tower cooling after former recirculated water heat exchange, heat wastes, comparatively good utilisation heat after transformation, separate unit stove byproduct steam total amount increase about 0.5 ton/hour, altogether 6 synthetic furnaces, is roughly equal to the benefit that the annual quantity of steam increased produces:
0.5 ton/hour × 8000 hours × 150 yuan/ton × 6=3,600,000 yuan.
After synthetic furnace pure water has been transformed, the equipment for synthetic furnace loses and maintenance and installation expense reduces 1,000,000 yuan, and reduce accident hazard coefficient greatly, ensures the safety of operator, and safety coefficient increases.
Embodiment 3
Pure water in first water pot 1 is after interchanger 2 heat exchange, and temperature is 30 DEG C, enters the lower end of the recirculated water section of synthetic furnace 3, and the flow of water is 45m
3/ h, in upper end outlet backwater to the first water pot 1 then by the recirculated water section of synthetic furnace 3; Hot water in the middle part of synthetic furnace 3 recirculated water section enters in the second water pot 4, and the temperature of hot water is 50 DEG C, and the hot water in the second water pot 4 is under the pressurization of the first water pump, and the pressure of the first water pump is 0.37Mpa, returns synthetic furnace 3, and hot water flow is 25m
3/ h, produce low-pressure steam, the pressure of steam is 0.230.260Mpa.
Be back to water cooling tower cooling after former recirculated water heat exchange, heat wastes, comparatively good utilisation heat after transformation, separate unit stove byproduct steam total amount increase about 0.6 ton/hour, altogether 6 synthetic furnaces, is roughly equal to the benefit that the annual quantity of steam increased produces:
0.6 ton/hour × 8000 hours × 150 yuan/ton × 6=4,320,000 yuan.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but the restriction not to invention protection domain; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still in protection scope of the present invention.
Claims (10)
1. one kind is improved the system of byproduct steam HCl synthetic furnace graphite block heat transfer effect, it is characterized in that: comprise the first water pot, heat-exchanger rig, synthetic furnace and the second water pot, wherein, the outlet of described first water pot is connected by the lower inlet of interchanger with synthetic furnace recirculated water section, the upper end outlet of synthetic furnace recirculated water section is connected with the entrance of the first water pot, the middle part of synthetic furnace recirculated water section is communicated with the second water pot, second water pot is communicated by the lower end of the first water pump with synthetic furnace steam jacket, hot water in second water pot is by described first water pump pressurization, steam is produced in synthetic furnace.
2. system according to claim 1, is characterized in that: described first water pot supplements water level by the first variable valve.
3. system according to claim 1, is characterized in that: connected by the second water pump between described first water pump and heat-exchanger rig.
4. system according to claim 1, is characterized in that: be provided with the second variable valve between described synthetic furnace and the second water pump.
5. one kind is improved the method for byproduct steam HCl synthetic furnace graphite block heat transfer effect, it is characterized in that: comprise the steps: that water in the first water pot is after interchanger heat exchange, enter the lower end of the recirculated water section of synthetic furnace, in upper end outlet backwater to the first water pot then by the recirculated water section of synthetic furnace; Hot water in the middle part of synthetic furnace recirculated water section enters in the second water pot, and the hot water in the second water pot, under the pressurization of the first water pump, returns synthetic furnace, produces low-pressure steam.
6. method according to claim 5, is characterized in that: the temperature of the water in described first water pot after interchanger heat exchange is 25-35 DEG C.
7. method according to claim 6, is characterized in that: the flow that the water in described first water pot enters synthetic furnace is 45-55m
3/ h.
8. method according to claim 5, is characterized in that: the pressure of described first water pump is 0.3-0.4Mpa.
9. method according to claim 5, is characterized in that: the pressure of described low-pressure steam is 0.23-0.260Mpa.
10. method according to claim 5, is characterized in that: described water is through RO membrane filtration purifying treatment.
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| CN201510325319.6A CN105036079B (en) | 2015-06-12 | 2015-06-12 | A kind of system and method improving byproduct steam HCl synthetic furnace graphite block heat transfer effect |
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|---|---|---|---|
| CN201510325319.6A CN105036079B (en) | 2015-06-12 | 2015-06-12 | A kind of system and method improving byproduct steam HCl synthetic furnace graphite block heat transfer effect |
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| CN105036079A true CN105036079A (en) | 2015-11-11 |
| CN105036079B CN105036079B (en) | 2017-03-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110589769A (en) * | 2019-09-17 | 2019-12-20 | 德州实华化工有限公司 | Automatic chlorine-hydrogen ratio control method and system for hydrogen chloride synthesis furnace and synthesis furnace |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663372A (en) * | 2013-11-21 | 2014-03-26 | 南通星球石墨设备有限公司 | Combined integrated graphite hydrogen chloride synthetic furnace |
| CN104654874A (en) * | 2015-02-10 | 2015-05-27 | 成都阿斯特克国龙环保工程有限公司 | Acid and acid regeneration unit waste gas residual heat recovery and waste gas processing system and method |
| CN104645790A (en) * | 2015-02-10 | 2015-05-27 | 成都阿斯特克国龙环保工程有限公司 | Smoke purification system and method for pickling line |
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2015
- 2015-06-12 CN CN201510325319.6A patent/CN105036079B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663372A (en) * | 2013-11-21 | 2014-03-26 | 南通星球石墨设备有限公司 | Combined integrated graphite hydrogen chloride synthetic furnace |
| CN104654874A (en) * | 2015-02-10 | 2015-05-27 | 成都阿斯特克国龙环保工程有限公司 | Acid and acid regeneration unit waste gas residual heat recovery and waste gas processing system and method |
| CN104645790A (en) * | 2015-02-10 | 2015-05-27 | 成都阿斯特克国龙环保工程有限公司 | Smoke purification system and method for pickling line |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110589769A (en) * | 2019-09-17 | 2019-12-20 | 德州实华化工有限公司 | Automatic chlorine-hydrogen ratio control method and system for hydrogen chloride synthesis furnace and synthesis furnace |
| CN110589769B (en) * | 2019-09-17 | 2021-04-23 | 德州实华化工有限公司 | Automatic chlorine-hydrogen ratio control method and system for hydrogen chloride synthesis furnace and synthesis furnace |
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| CN105036079B (en) | 2017-03-08 |
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