CN102515103B - Technology for secondarily producing medium pressure steam during synthesizing chlorine and hydrogen into hydrogen chloride and equipment thereof - Google Patents
Technology for secondarily producing medium pressure steam during synthesizing chlorine and hydrogen into hydrogen chloride and equipment thereof Download PDFInfo
- Publication number
- CN102515103B CN102515103B CN2011104495090A CN201110449509A CN102515103B CN 102515103 B CN102515103 B CN 102515103B CN 2011104495090 A CN2011104495090 A CN 2011104495090A CN 201110449509 A CN201110449509 A CN 201110449509A CN 102515103 B CN102515103 B CN 102515103B
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- equipment
- water
- temperature
- pressure steam
- Prior art date
- 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.)
- Active
Links
Images
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
- 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
Abstract
The invention discloses a technology for secondarily producing medium pressure steam during synthesizing chlorine and hydrogen into hydrogen chloride and equipment thereof, wherein the high-temperature water forms an automatic closed loop heat exchange unit through improving the technology and the equipment, meanwhile, the following four problems can be solved: 1, equipment corrosion problem; 2, damage problem which is caused by equipment expansion and contraction; 3, welding deformation problem during the equipment manufacturing process; and 4, equipment sealing problem. The invention is a chlorine and hydrogen synthesis waste heat recovery technology which has higher steam pressure and wider steam utilization scope.
Description
Technical field
The present invention relates to the chlor-alkali industry production process equipment, particularly technique and the equipment thereof of attached product middle pressure steam in a kind of chlorine and the hydrogen synthesising hydrogen process.
Background technology
The at present production of China's chlor-alkali industry mainly contains two kinds of ionic membrane method and diaphragm processes, but no matter adopts which kind of electrolysis process, all can produce a large amount of chlorine and hydrogen (2NaCL+2H
2O=2NaHO+CL
2+ H
2), show according to Chinese chlor-alkali net statistic data, ended for the end of the year 2010, domestic caustic soda production capacity reaches 3021.1 ten thousand t/a altogether, the polyvinyl chloride production capacity reaches 2042.7 ten thousand t/a, also have in addition a large amount of chlorine and hydrogen to be used for producing hydrochloric acid, and can produce a large amount of heats in the process of chlorine and hydrogen synthesising hydrogen, H
2+ CL
2→ 2HCL+44kcal.
Present domestic chlor-alkali industry most enterprises is not also recycled this heat, but adopt recirculated water indirectly to cool off, the heat that produces in the hydrogen chlorine building-up process is taken away, the recirculated water that absorbs large calorimetric enters the circulating water heating pond, be delivered to the water cooling tower cooling through hot water pump again, enter again water cooling pond through the cooled recirculated water of water cooling tower, be delivered to hydrogen chloride synthetic furnace through water supply pump again and continue to use, thereby formed a closed circuit water cycle.In the whole process the synthetic heat that produces of hydrogen chlorine has all been exchanged in the atmosphere, and consumed a large amount of power current (hot water pump, water supply pump, blower fan).
Present domestic chlor-alkali industry also has minority enterprise to adopt new technology: the production technique of the attached product low-pressure steam of hydrogen chloride graphite synthesis furnace is carried out heat recuperation.But because the characteristic of graphite is limit, the pressure of equipment of the type is limited, the vapor pressure that causes this technique to produce only is 0.2～0.5MPa, be delivered to the user and also have the pressure-losses, closely cause the steam field of employment of this pressure rating to be restricted, because chlor-alkali enterprises is 0.6～0.8MPa with the demand that hot charging is put vapor pressure a lot, such as spent liquor evaporation, polyvinyl chloride polymerization, drying etc.
Summary of the invention
The object of the invention is to overcome existing above-mentioned deficiency in the prior art, a kind of technique and equipment thereof are provided, be used for chlorine and the attached product middle pressure steam of hydrogen synthesising hydrogen, be that a kind of vapor pressure is higher, chlorine, hydrogen synthesize the technology of waste heat recovery to the steam use range widely.
In order to realize the foregoing invention purpose, the technical solution used in the present invention is as follows:
The technique of a kind of chlorine and the attached product middle pressure steam of hydrogen synthesising hydrogen, adopt the some stokehold that high-temperature water self-circulation heat exchange unit is carried out preheating: water in synthetic furnace, flash tank, the self-circulation pipeline is filled up in the some stokehold, then open the steam from the battery limit (BL), enter steam heater E130 by variable valve TCV130, with enter again steel middle pressure steam synthetic furnace R140 lower condensate sump after pure water mixes, until temperature reaches temperature regulator TIC130 set(ting)value, can carry out a furnace operating and begin normal production.
The mixed firing in steel middle pressure steam synthetic furnace of chlorine and hydrogen generates hydrogen chloride gas, and produces amount of heat, H
2+ CL
2→ 2HCL+44kcal, because the highest dew point of hydrogenchloride is 108.65 ℃, therefore in a stokehold, must guarantee that the pure water temperature in the stove is higher than the dew-point temperature of hydrogenchloride, hydrogen chloride gas is remained in the tolerable scope the corrosion speed of carbon steel, the technique that has adopted the some stokehold that high-temperature water self-circulation heat exchange unit is carried out preheating among the present invention: the some stokehold is with synthetic furnace, flash tank, water fills up in the self-circulation pipeline, then open the steam from the battery limit (BL), enter steam heater E130 by variable valve TCV130, with enter again steel middle pressure steam synthetic furnace R140 lower condensate sump after pure water mixes, until temperature reaches temperature regulator TIC130 set(ting)value (118 ℃), then can carry out a furnace operating and begin normal production.
Behind the steel middle pressure steam synthetic furnace R140 point stove, hydrogen and chlorine mixed firing, produce amount of heat, pure water in the hydrogen chloride gas of high heat and the inner coil pipe of steel middle pressure steam synthetic furnace R140 carries out heat exchange, the pure water temperature that absorbs amount of heat raises, volumetric expansion, the density beginning that diminishes is risen along the upcast of high-temperature water self-circulation pipe network, until arrive in the flash tank D103, high-temperature water carries out flash distillation in flash tank D103, the flash distillation of part high-temperature water is middle pressure steam and takes away amount of heat, high-temperature water is through after the flash distillation, remaining water temp reduces, volume-diminished, density becomes the downtake that begins greatly along high-temperature water self-circulation pipe network and descends, get back to again synthetic furnace always, thereby under the hydrogen chloride gas heat power of high heat promoted, high-temperature water had formed an automatic closed cycle heat exchange unit.After the flash distillation of part high-temperature water, the liquid level of flash tank D103 can be fallen, when being lower than the liquid level set(ting)value, fluid level controller LIC103 output control signal is to inlet regulating valve LCV103, valve opening increases, confluent increases, make the level stability of flash tank D103 operate in the set(ting)value position, otherwise, when the liquid level of flash tank D103 surpassed set(ting)value, then fluid level controller LIC103 output control signal was to inlet regulating valve LCV103, and valve opening reduces, confluent reduces, and makes the level stability of flash tank D103 operate in the set(ting)value position.
The equipment of a kind of chlorine and the attached product middle pressure steam of hydrogen synthesising hydrogen, comprise for the synthetic cooling unit of water unit, high-temperature water self-circulation heat exchange unit and hydrogenchloride, wherein comprise pure water storage tank D101 and service pump P-120 for water unit, high-temperature water self-circulation heat exchange unit comprises steam heater E130, synthetic furnace R140, flash tank D103 and blow down cooler E104, the synthetic cooling unit of hydrogenchloride comprises synthetic furnace R140, stone cooler E150, and described flash tank D103 has safety valve, pressure unit PICA103 and pressure regulator valve PCV103;
Described synthetic furnace R140 has temperature transmitter;
Described stone cooler E150 has temperature transmitter, flow transmitter;
Be coated with protective system AK07-4 at body of heater 6 internal surfaces and inner coil pipe 4 outside surfaces;
Inner coil pipe 4 is processed into the part arc in making processes, lower curved plate 3, upper curved plate 7 are processed into arc in the course of processing, inner coil pipe 4, lower curved plate 3 and 7 three component combinations of upper curved plate form three grades of buffering arcs together, still can prevent structure deteriorate under the huge strong variation of temperature;
Body of heater 6 steel plates separate with heat exchanger components inner coil pipe 4.
Solve the equipment corrosion problem:
Since in the synthetic whole process of hydrogenchloride (some stove-operation-blowing out) all more or less condensation acid formation arranged, thereby the steel synthetic furnace is formed fatal corrosion, this also is the technical bottleneck problem that hinders the development of steel synthetic furnace in the domestic chlor-alkali industry, adopted among the present invention Beijing space difficult to understand can be prosperous surface engineering technology company limited AK07-4 as the interior impregnating material of equipment, corrosion-and high-temp-resistant, heatproof reaches 1100 ℃, prove by experiment, this coating and hydrogenchloride, hydrochloric acid is without chemical reaction, spray this protective system at body of heater 6 internal surfaces and inner coil pipe 4 outside surfaces, protective system has stopped body of heater 6 internal surfaces and inner coil pipe 4 outside surfaces and hydrogenchloride after solidifying, the direct contact of hydrochloric acid, thereby separated fast the etching problem of steel middle pressure steam synthetic furnace, the greatly work-ing life of extension device.
The solution equipment damage equipment problem of expanding with heat and contract with cold:
The present invention has adopted following technical measures in design: equipment spare inner coil pipe 4 is processed into the part arc in making processes, lower curved plate 3, upper curved plate 7 are processed into arc in the course of processing, these three component combinations have just formed one three grades buffering arcs together, therefore can prevent that still equipment is damaged under the huge strong variation of device temperature.
Preferably: inner coil pipe 4 is processed into the part arc of R=2000mm in making processes, and lower curved plate 3, upper curved plate 7 are processed into the arc of R=200mm in the course of processing.
Solve the welding distortion problem in the equipment making process:
At present, boiler heat exchange adopts water wall structure more, adopt between heat exchange steel tube and the heat exchange steel tube to be connected with the mode of Plate Welding, this mode is feasible in boiler, still, not not very suitable just in the chlorination building-up process, because between steel pipe and the steel pipe a large amount of employing weldprocedure, the one, the welding job amount is very large, the 2nd, deflection is very large in the welding process, the 3rd, welding stress and welded heat affecting zone are more, and the heat exchange steel tube resistance to corrosion reduces greatly.The present invention adopts body of heater 6 steel plates not contact major advantage with heat exchanger components inner coil pipe 4 in design: the one, and the heat interchanging area that doubles makes the heat recuperation rate of hydrogenchloride building-up process greater than 60%; The 2nd, reduced a large amount of welds, eliminated welding distortion, welding stress and the welded heat affecting zone of heat transfer tube more than 90%, the tubing resistance to corrosion is effectively protected, and therefore need not the insulation of stopping fully, thereby has greatly saved the usage quantity of steam.
Solution equipment sealing problem:
The material of described synthetic furnace R140 is steel, and whole equipment is one-body molded.
Graphite steam synthetic furnace is because sections bracing with connective positional adopts flange connection substantially at present, the particularly connection between graphite and the steel part, in the operational process or in the start-stop car process, owing to expanding with heat and contract with cold or the reason such as trim corrosion, often cause equipment to leak in a large number high-temperature water or hydrogenchloride, cause environmental pollution and production cost to increase; The present invention has adopted the steel making fully in design, realized the seamless link of equipment, and device interior is the static and dynamic sealing point nowhere, thereby has solved the equipment sealing problem.
Described pure water storage tank D101 has fluid level controller LIC101;
Has the motor frequency conversion device on the described service pump P-120 inhalent siphon;
Have pressure controller PIC120 and motor frequency conversion device on the described service pump P-120 outlet pipe, the carrying capacity of service pump P-120 is controlled frequency transformer, the rotating speed of described Frequency Converter Control water supply pump motor by the control signal of pressure controller PIC120 output.
The inlet regulating valve LCV103 interlocking of the pressure controller PIC120 on the described outlet pipe and high-temperature water self-circulation heat exchange unit.
It is for subsequent use that boiler feed water from the water treatment operation or the steam condensate from the spent liquor evaporation operation enter pure water storage tank D101 by variable valve LCV101, the water yield for subsequent use is exported the working order that control signal is controlled LCV101 by the fluid level controller LIC101 of pure water storage tank D101, and the output signal of controller LIC101 is set according to working specification by operator.
Pure water in the pure water storage tank D101 directly is delivered in the downtake of high-temperature water self-circulation pipe network through service pump (P-120), and the electric machine control of service pump P-120 adopts variable frequency control, has reached energy-conservation purpose; The carrying capacity of service pump P-120 is controlled frequency transformer by the control signal of pressure controller PIC120 output, passes through the rotating speed of Frequency Converter Control water supply pump motor again, thereby realizes the control of carrying capacity, reaches the purpose of automatic voltage regulation.
When service pump P-120 or electric system break down when causing P-120 outlet pipe pressure drop to safe pressure point 1.2MPa, the inlet regulating valve LCV103 interlocking of service pump P-120 outlet pipe upward pressure controller PIC120 and high-temperature water self-circulation heat exchange unit, prevented from causing high-temperature water back-pressure in the synthetic furnace because service pump P-120 or electric system break down, inlet regulating valve LCV103 is in time closed, prevent because of pressure of supply water excessively low, cause the 1.0MPa high-temperature water back-pressure in the synthetic furnace, make the synthetic furnace lack of water do a pot damage equipment, also prevented that 1.0MPa high-temperature water back-pressure from out hurting sb.'s feelings afterwards simultaneously.
Constantly be evaporated into steam owing to high-temperature water in the high-temperature water self-circulation heat exchange unit, again constantly by supplying the water unit make up water, the salt that does not eliminate in the water, the objectionable constituent such as alkali will enrichment, equipment and process pipeline are caused damage, in order to prevent that this type of accident from occuring, the present invention has adopted regularly the also technology of cooling of bottom blow-down, since in this device enrichment of discharge saline and alkaline wastewater temperature higher, for anti-these personnel that cause scald and a large amount of water vapors impact of the on-the-spot generation of blowdown operation, present technique has adopted blow down cooler E104, the high-temperature water of discharging is cooled, avoid the generation of above security incident and on the impact of operating environment.
The synthetic cooling unit of hydrogenchloride is in order to realize the purpose of the synthesizing chlorinated hydrogen of hydrogen and chlorine and cooling, hydrogen and the chlorine heat release synthesizing high temperature hydrogen chloride gas that in synthetic furnace R140, burns at first, heat transfer tube in high-temp chlorination hydrogen and the synthetic furnace (being inner coil pipe) carries out the heat exchange first time, be lowered through for the first time heat exchange post chlorization hydrogen temperature, but temperature is still higher (about 220 ℃, with produce load and synthetic furnace heat-transfer surface vary in size slightly change), enter stone cooler E150 through the hydrogen chloride gas after the heat exchange by process pipeline and carry out the secondary cooling, be cooled to 60 ℃ (TICA150 monitors by temperature transmitter) and use with the interior lower procedure of delivering to.The synthetic furnace heat transfer tube is along with the prolongation of duration of service, there is perforation to leak high-temperature water to the interior risk of stove, in time discovery will have serious consequences to lower procedure in case if perforation is leaked not, in order to prevent the generation of this type of thing, be provided with stone cooler outlet hydrogenchloride temperature transmitter TICA150 and stone cooler condensation acid discharge outlet flow transmitter FICA401 among the present invention, because the synthetic furnace heat transfer tube is in case high-temperature water is leaked in perforation, the hydrogenchloride wall pressure is lower in the synthetic furnace, high-temperature water can flash distillation produce a large amount of steam, the hydrogenchloride wall pressure raises, the total heat of hydrogen chloride gas also can raise, the hydrogen chloride gas that contains a large amount of water vapors goes out synthetic furnace and enters the cooling of stone cooler, the interior condensation acid of stone cooler can roll up after the cooling, stone cooler outlet hydrogen chloride gas temperature can obviously rise, and at this moment, in time abnormal signal is transferred to operating center by hydrogenchloride temperature transmitter and condensation acid flow transmitter, operator just can in time carry out emergency disposal, prevent from lower procedure is exerted an influence.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention has formed an automatic closed cycle heat exchange unit by the transformation high-temperature water of technique and equipment, has solved simultaneously the problem of 4 aspects: 1. equipment corrosion problem; 2. equipment expands with heat and contract with cold and causes the problem of damage; 3. the welding distortion problem in the equipment making process; 4. equipment sealing problem.The present invention is that a kind of vapor pressure is higher, the steam use range technology of chlorine, the synthetic waste heat recovery of hydrogen widely.
Description of drawings
Fig. 1 is process flow sheet of the present invention;
Fig. 2 is steel middle pressure steam hydrogen chloride synthetic furnace synoptic diagram of the present invention;
Fig. 3 is conventional boiler water wall structure synoptic diagram;
Fig. 4 is stove water wall structure synoptic diagram of the present invention;
Wherein, 1 is lower condensate sump, and 2 are the water inlet pipe nipple, and 3 is lower curved plate, and 4 is inner coil pipe, and 5 is baffle plate, and 6 is body of heater, and 7 is upper curved plate, and 8 is upper condensate sump, and 9 are the water outlet pipe nipple.
Embodiment
Below in conjunction with embodiment foregoing invention content of the present invention is described in further detail.
But this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following embodiment.Not breaking away from the above-mentioned technological thought situation of the present invention, according to ordinary skill knowledge and customary means, make various replacements and change, all should comprise within the scope of the invention.
Embodiment 1
Present embodiment is the process implementing example.
The technique that adopts the some stokehold that high-temperature water self-circulation heat exchange unit is carried out preheating: water in synthetic furnace, flash tank, the self-circulation pipeline is filled up in the some stokehold, then opened the steam from the battery limit (BL), enter steam heater E130 by variable valve TCV130, with enter again steel middle pressure steam synthetic furnace R140 lower condensate sump after pure water mixes, until temperature reaches 118 ℃ of temperature regulator TIC130 set(ting)values, then can carry out a furnace operating and begin normal production.
Behind the steel middle pressure steam synthetic furnace R140 point stove, hydrogen and chlorine mixed firing, produce amount of heat, pure water in the hydrogen chloride gas of high heat and the inner coil pipe of steel middle pressure steam synthetic furnace R140 carries out heat exchange, the pure water temperature that absorbs amount of heat raises, volumetric expansion, the density beginning that diminishes is risen along the upcast of high-temperature water self-circulation pipe network, until arrive in the flash tank D103, high-temperature water carries out flash distillation in flash tank, the flash distillation of part high-temperature water is middle pressure steam and takes away amount of heat, high-temperature water is through after the flash distillation, remaining water temp reduces, volume-diminished, density becomes the downtake that begins greatly along high-temperature water self-circulation pipe network and descends, get back to again synthetic furnace always, thereby under the hydrogen chloride gas heat power of high heat promoted, high-temperature water had formed an automatic closed cycle heat exchange unit.After the flash distillation of part high-temperature water, the liquid level of flash tank D103 can be fallen, when the value that is lower than liquid level and sets: in the time of 50%, fluid level controller LIC103 output control signal is to inlet regulating valve LCV103, valve opening increases, confluent increases, make the level stability of flash tank D103 operate in 50%, otherwise, when the liquid level of flash tank D103 surpassed 50%, then fluid level controller LIC103 output control signal was to inlet regulating valve LCV103, and valve opening reduces, confluent reduces, and makes the level stability of flash tank D103 operate in 50%.
Embodiment 2
Present embodiment is device structure embodiment.
The equipment of a kind of chlorine and the attached product middle pressure steam of hydrogen synthesising hydrogen, comprise for the synthetic cooling unit of water unit, high-temperature water self-circulation heat exchange unit and hydrogenchloride, wherein comprise pure water storage tank D101 and service pump P-120 for water unit, high-temperature water self-circulation heat exchange unit comprises steam heater E130, synthetic furnace R140, flash tank D103 and blow down cooler E104, the synthetic cooling unit of hydrogenchloride comprises synthetic furnace R140, stone cooler E150, and described flash tank D103 has safety valve, pressure unit PICA103 and pressure regulator valve PCV103;
Described synthetic furnace R140 has temperature transmitter;
Described stone cooler E150 has temperature transmitter, flow transmitter;
Embodiment 3
Present embodiment is for solving equipment corrosion problem embodiment.
At body of heater 6 internal surfaces and inner coil pipe 4 outside surface anticorrosion with painting coating AK07-4;
Adopted among the present invention Beijing space difficult to understand can be prosperous the AK07-4 corrosion-and high-temp-resistant coating of surface engineering technology company limited, heatproof reaches 1100 ℃, proof by experiment, this coating and hydrogenchloride, hydrochloric acid are without chemical reaction.
Simultaneously, also solution equipment stops and is incubated the reduction energy consumption problem.
Embodiment 4
The embodiment of the problem that present embodiment causes damage for solution equipment expands with heat and contract with cold.
Steel middle pressure steam hydrogen chloride synthetic furnace synoptic diagram of the present invention as shown in Figure 2, adopted following technical measures: inner coil pipe 4 is processed into the part arc of R=2000mm in making processes, lower curved plate 3, upper curved plate 7 are processed into the arc of R=200mm in the course of processing, these three component combinations have just formed one three grades buffering arcs together, therefore can prevent that still equipment is damaged under the huge strong variation of device temperature.
Embodiment 5
Present embodiment is for solving the embodiment of the welding distortion problem in the equipment making process.
Be boiler water wall structural representation of the prior art as shown in Figure 3, Fig. 4 is the water wall structure synoptic diagram among the present invention, and body of heater 6 steel plates separate with heat exchanger components inner coil pipe 4.
Present embodiment is the embodiment of solution equipment sealing problem.
The material of described synthetic furnace R140 is steel, and whole equipment is one-body molded.
Adopted the steel making fully, realized the seamless link of equipment, device interior is the static and dynamic sealing point nowhere, thereby has solved the equipment sealing problem.
Embodiment 7
Present embodiment is water supply modular construction embodiment.
Described pure water storage tank D101 has fluid level controller LIC101;
Has the motor frequency conversion device on the described service pump P-120 inhalent siphon;
Have pressure controller PIC120 and motor frequency conversion device on the described service pump P-120 outlet pipe, the carrying capacity of service pump P-120 is controlled frequency transformer, the rotating speed of described Frequency Converter Control water supply pump motor by the control signal of pressure controller PIC120 output.
The inlet regulating valve LCV103 interlocking of the pressure controller PIC120 on the described outlet pipe and high-temperature water self-circulation heat exchange unit.
It is for subsequent use that boiler feed water from the water treatment operation or the steam condensate from the spent liquor evaporation operation enter pure water storage tank D101 by variable valve LCV101, the water yield for subsequent use is exported the working order that control signal is controlled LCV101 by the fluid level controller LIC101 of pure water storage tank D101, and the output signal of controller LIC101 is set according to working specification by operator.
For example: the liquid level that D101 is set is 70%, and when the D101 liquid level was lower than 70%, variable valve LCV101 automatic torque-increasing added aperture, be the D101 make-up water source, when the D101 liquid level was higher than 70%, variable valve LCV101 automatically reduced aperture even closes, and guaranteed that the liquid level of D101 is in 70% automatically operation.
Pure water in the pure water storage tank D101 directly is delivered in the downtake of high-temperature water self-circulation pipe network through service pump P-120, and the electric machine control of service pump P-120 adopts variable frequency control, has reached energy-conservation purpose; The carrying capacity of service pump P-120 is controlled frequency transformer by the control signal of pressure controller PIC120 output, passes through the rotating speed of Frequency Converter Control water supply pump motor again, thereby realizes the control of carrying capacity, reaches the purpose of automatic voltage regulation.
For example: the operating pressure that PIC120 is set is 1.5MPa, when the pressure of PIC120 is lower than 1.5MPa, pressure controller PIC120 outputs control signals to frequency transformer, frequency transformer increases the motor power frequency, motor speed increases, carrying capacity increases, until pressure controller PIC120 operating pressure is to 1.5MPa; Otherwise then motor speed reduces, and carrying capacity reduces, and guarantees that service pump P-120 rising pipe pressure-stabilisation operates in 1.5MPa until pressure controller PIC120 operating pressure to 1.5MPa, so circulates.
When service pump P-120 or electric system break down when causing P-120 outlet pipe pressure drop to safe pressure point 1.2MPa, the inlet regulating valve LCV103 interlocking of service pump P-120 outlet pipe upward pressure controller PIC120 and high-temperature water self-circulation heat exchange unit, prevented from causing high-temperature water back-pressure in the synthetic furnace because service pump P-120 or electric system break down, inlet regulating valve LCV103 is in time closed, prevent because of pressure of supply water excessively low, cause the 1.0MPa high-temperature water back-pressure in the synthetic furnace, make the synthetic furnace lack of water do a pot damage equipment, also prevented that 1.0MPa high-temperature water back-pressure from out hurting sb.'s feelings afterwards simultaneously.
Claims (6)
1. the technique of a chlorine and the attached product middle pressure steam of hydrogen synthesising hydrogen, it is characterized in that: adopt the some stokehold that high-temperature water self-circulation heat exchange unit is carried out preheating: water in synthetic furnace, flash tank, the self-circulation pipeline is filled up in the some stokehold, then open the steam from the battery limit (BL), enter steam heater (E130) by variable valve (TCV130), with enter again steel middle pressure steam synthetic furnace (R140) lower condensate sump after pure water mixes, until temperature reaches temperature regulator (TIC130) set(ting)value, can carry out a furnace operating and begin normal production;
Behind the middle pressure steam synthetic furnace R140 point stove, hydrogen and chlorine mixed firing, produce amount of heat, pure water in the hydrogen chloride gas of high heat and the inner coil pipe of steel middle pressure steam synthetic furnace R140 carries out heat exchange, the pure water temperature that absorbs amount of heat raises, volumetric expansion, the density beginning that diminishes is risen along the upcast of high-temperature water self-circulation pipe network, until arrive in the flash tank D103, high-temperature water carries out flash distillation in flash tank D103, the flash distillation of part high-temperature water is middle pressure steam and takes away amount of heat, high-temperature water is through after the flash distillation, remaining water temp reduces, volume-diminished, density becomes the downtake that begins greatly along high-temperature water self-circulation pipe network and descends, get back to again synthetic furnace always, thereby under the hydrogen chloride gas heat power of high heat promoted, high-temperature water had formed an automatic closed cycle heat exchange unit.
2. the equipment of a chlorine and the attached product middle pressure steam of hydrogen synthesising hydrogen, comprise for the synthetic cooling unit of water unit, high-temperature water self-circulation heat exchange unit and hydrogenchloride, wherein comprise pure water storage tank (D101) and service pump (P-120) for water unit, high-temperature water self-circulation heat exchange unit comprises steam heater (E130), synthetic furnace (R140), flash tank (D103) and blow down cooler (E104), the synthetic cooling unit of hydrogenchloride comprises synthetic furnace (R140), stone cooler (E150), it is characterized in that:
Described flash tank (D103) has safety valve, pressure unit (PICA103) and pressure regulator valve (PCV103);
Described synthetic furnace (R140) has temperature transmitter;
Described stone cooler (E150) has temperature transmitter, flow transmitter;
Be coated with protective system AK07-4 at body of heater (6) internal surface and inner coil pipe (4) outside surface;
Inner coil pipe (4) is processed into the part arc in making processes, lower curved plate (3), upper curved plate (7) are processed into arc in the course of processing, inner coil pipe (4), lower curved plate (3) and (7) three component combinations of upper curved plate form three grades of buffering arcs together, still can prevent structure deteriorate under the huge strong variation of temperature;
Body of heater (6) steel plate separates with heat exchanger components inner coil pipe (4).
3. the equipment of chlorine according to claim 2 and the attached product middle pressure steam of hydrogen synthesising hydrogen, it is characterized in that: the material of described synthetic furnace (R140) is steel, and whole equipment is one-body molded.
4. the equipment of chlorine according to claim 2 and the attached product middle pressure steam of hydrogen synthesising hydrogen, it is characterized in that: inner coil pipe (4) is processed into the part arc of R=2000mm in making processes, and lower curved plate (3), upper curved plate (7) are processed into the arc of R=200mm in the course of processing.
5. the equipment of chlorine according to claim 2 and the attached product middle pressure steam of hydrogen synthesising hydrogen is characterized in that:
Described pure water storage tank (D101) has fluid level controller (LIC101);
Has the motor frequency conversion device on described service pump (P-120) inhalent siphon;
Have pressure controller (PIC120) and motor frequency conversion device on described service pump (P-120) outlet pipe, the carrying capacity of service pump (P-120) is controlled frequency transformer, the rotating speed of described Frequency Converter Control water supply pump motor by the control signal of pressure controller (PIC120) output.
6. the equipment of chlorine according to claim 5 and the attached product middle pressure steam of hydrogen synthesising hydrogen is characterized in that: inlet regulating valve (LCV103) interlocking of the pressure controller on the described outlet pipe (PIC120) and high-temperature water self-circulation heat exchange unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104495090A CN102515103B (en) | 2011-12-29 | 2011-12-29 | Technology for secondarily producing medium pressure steam during synthesizing chlorine and hydrogen into hydrogen chloride and equipment thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104495090A CN102515103B (en) | 2011-12-29 | 2011-12-29 | Technology for secondarily producing medium pressure steam during synthesizing chlorine and hydrogen into hydrogen chloride and equipment thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102515103A CN102515103A (en) | 2012-06-27 |
| CN102515103B true CN102515103B (en) | 2013-10-16 |
Family
ID=46286257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104495090A Active CN102515103B (en) | 2011-12-29 | 2011-12-29 | Technology for secondarily producing medium pressure steam during synthesizing chlorine and hydrogen into hydrogen chloride and equipment thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102515103B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104003355A (en) * | 2014-06-05 | 2014-08-27 | 山东东岳氟硅材料有限公司 | Continuous operation production process for synthesizing hydrogen chloride to prepare hydrochloric acid |
| CN112985083B (en) * | 2021-02-06 | 2022-12-23 | 四川省金路树脂有限公司 | Device and method for synthesizing hydrogen chloride and coproducing medium-low pressure steam in three-stage manner |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101698468A (en) * | 2009-11-12 | 2010-04-28 | 南通星球石墨设备有限公司 | Combined type hydrogen chloride synthetic furnace of by-product high-pressure steam |
| CN101948095A (en) * | 2010-10-18 | 2011-01-19 | 天津市泰亨气体有限公司 | Technique for preparing hydrogen chloride and recovering steam by using synthesis method |
-
2011
- 2011-12-29 CN CN2011104495090A patent/CN102515103B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101698468A (en) * | 2009-11-12 | 2010-04-28 | 南通星球石墨设备有限公司 | Combined type hydrogen chloride synthetic furnace of by-product high-pressure steam |
| CN101948095A (en) * | 2010-10-18 | 2011-01-19 | 天津市泰亨气体有限公司 | Technique for preparing hydrogen chloride and recovering steam by using synthesis method |
Non-Patent Citations (2)
| Title |
|---|
| 二合一副产蒸汽氯化氢合成炉运行总结;张同荣登;《中国氯碱》;20110930(第9期);第26-27页 * |
| 张同荣登.二合一副产蒸汽氯化氢合成炉运行总结.《中国氯碱》.2011,(第9期),第26-27页. |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102515103A (en) | 2012-06-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107293341B (en) | Pool type reactor | |
| CN105152509B (en) | The supercritical processing methods of supercritical reaction device, supercritical reaction system and sludge | |
| CN206282930U (en) | Thermal control system and application in a kind of hydrogen energy-storage system | |
| CN109264914A (en) | A kind of supercritical water oxidation energy comprehensive utilization system and energy reclaiming method | |
| CN204939232U (en) | Supercritical reaction device and supercritical reaction system | |
| CN101956969A (en) | Fused salt coil tube type steam generation method and device | |
| CN102515103B (en) | Technology for secondarily producing medium pressure steam during synthesizing chlorine and hydrogen into hydrogen chloride and equipment thereof | |
| CN202730087U (en) | Water cooled wall type water coal slurry gasifier | |
| CN110283625A (en) | Supercritical water coal gasification apparatus and method | |
| CN201280954Y (en) | Rear gland sealing steam supply device for condensing steam turbine | |
| CN204460168U (en) | A kind of steam boiler steam discharge energy recycling system | |
| CN203836922U (en) | Waste heat recycling equipment applied to coal gasification device | |
| CN201010526Y (en) | Calcium oxide thermal energy generating device | |
| CN206191553U (en) | Coke oven crude gas tedge waste heat recovery optimizing apparatus | |
| CN111620305B (en) | Device and method for greatly improving byproduct steam of synthesis of hydrogen chloride | |
| CN111056616B (en) | Supercritical water oxidation system with air as oxidant and starting method | |
| CN102788363A (en) | Waste heat boiler used for scrap copper smelting furnace | |
| CN202733938U (en) | Waste heat boiler for scrap copper smelting furnace | |
| CN208203495U (en) | A kind of industrial air compressor waste heat cyclic utilization system | |
| KR101632576B1 (en) | A combustion typed hydrogen generating apparatus | |
| CN211345273U (en) | Novel modular steam generating device | |
| CN217109514U (en) | Blowdown flash vessel secondary steam recycle system | |
| CN104061810A (en) | Waste heat recovery system | |
| CN114247168B (en) | Steam-hot water coupling low-temperature flash evaporation device and flash evaporation method | |
| CN220870849U (en) | Thermal power plant cold start steam supply system based on fused salt heat accumulation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |