CN109879251A - A kind of hydrogen chloride synthesis system based on total energy approach - Google Patents
A kind of hydrogen chloride synthesis system based on total energy approach Download PDFInfo
- Publication number
- CN109879251A CN109879251A CN201910170154.8A CN201910170154A CN109879251A CN 109879251 A CN109879251 A CN 109879251A CN 201910170154 A CN201910170154 A CN 201910170154A CN 109879251 A CN109879251 A CN 109879251A
- Authority
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- China
- Prior art keywords
- chlorine
- hydrogen chloride
- gas
- energy
- refrigeration unit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 50
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 50
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 229910000041 hydrogen chloride Inorganic materials 0.000 title claims abstract description 39
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000005057 refrigeration Methods 0.000 claims abstract description 40
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000000460 chlorine Substances 0.000 claims abstract description 33
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 33
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 32
- 230000001105 regulatory effect Effects 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 238000009834 vaporization Methods 0.000 claims abstract description 16
- 230000008016 vaporization Effects 0.000 claims abstract description 16
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000001257 hydrogen Substances 0.000 claims abstract description 15
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 238000005660 chlorination reaction Methods 0.000 claims description 5
- 238000010248 power generation Methods 0.000 claims 1
- 238000010025 steaming Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 235000011121 sodium hydroxide Nutrition 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 238000010795 Steam Flooding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000011555 saturated liquid Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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
Abstract
The present invention discloses a kind of hydrogen chloride synthesis system based on total energy approach, including cooling tower, hydrogen chloride synthesis tower, ORC generating set, electric power regulating mechanism, refrigeration unit and gas-gas heat exchanger, hydrogen and chlorine synthesize release amount of heat in hydrogen chloride synthesis tower, and its heat is used for producing steam；On the basis of obtaining steam, electric energy is converted by the portion of energy in steam using ORC generating set；Electric energy in the electric energy and power grid of generating set acquisition is adjusted in electric power regulating mechanism, and drives refrigeration unit；The condenser of refrigeration unit discharges heat for realizing the vaporization of low temperature liquid chlorine, and the evaporator of refrigeration unit is used to absorb the liquefaction that heat realizes chlorine；The high temperature chlorine of low temperature chlorine and technique production after vaporization carries out heat exchange in gas-gas heat exchanger.The present invention realizes the step comprehensive utilization of the energy, makes full use of with chemical reaction heat and energy synthesis, greatly reduces consumed energy when hydrogen chloride synthesis, has very strong energy-saving effect.
Description
Technical field
The present invention relates to chemical equipment technical fields, and in particular to a kind of hydrogen chloride synthesis system based on total energy approach
System.
Background technique
It in caustic soda production, is generally formed by electrolytic brine, in electrolytic process, in addition to primary product hydrogen-oxygen
Change outside sodium, there are also other by-products such as, hydrogen and chlorine, thus generally that generated chlorine and hydrogen is raw in caustic soda industry
Hydrogen chloride is produced, byproduct hydrochloric acid is then formed.
However energy consumption consumed by the by-product hydrochloric acid generated in caustic soda production is huge, firstly, containing impurity
Chlorine is in liquefaction process, and using common refrigeration unit, the heat of the condenser release of refrigeration unit is by cooling tower come cold
But, since condensation temperature at this time is generally very high, at 35 DEG C or more, and evaporating temperature is very low, at -28 DEG C hereinafter, refrigeration unit
Efficiency is extremely low, and general COP is 1 or so.Liquid chlorine needs to become the chlorine of room temperature when entering hydrogen chloride synthesis tower simultaneously, thus logical
Liquid chlorine vaporization is realized frequently with steam reheating；Furthermore in hydrogen chloride synthesis tower, chlorine and hydrogen generate largely in synthesis
Heat needs a large amount of cooling waters cooling to control hcl reaction rate, thus system needs to configure large cooling column, while cold
But the power consumption of water pump is also very high.Thus in the case, based on cascaded utilization of energy, then seem to total energy approach
It is extremely important.
Summary of the invention
The present invention proposes a kind of hydrogen chloride synthesis system based on total energy approach, it is therefore intended that fully considers that system is transported
Energy consumption when row, in conjunction with ORC low-temperature electricity-generating, gas-gas heat exchanger carries out waste heat recycling, while improving refrigeration system as far as possible
Efficiency, to realize hydrogen-chloride synthesis total energy approach.
To realize above-mentioned technical purpose and the technique effect, the invention is realized by the following technical scheme: Yi Zhongji
In the hydrogen chloride synthesis system of total energy approach, including cooling tower, hydrogen chloride synthesis tower, ORC generating set, electric adjustment dress
It sets, refrigeration unit and gas-gas heat exchanger, is followed successively by synthesis stage, steam generation section and cooling from the bottom up inside hydrogen chloride synthesis tower
Section；Generating set, condenser and evaporator are equipped with inside the ORC generating set；Evaporator in the ORC generating set and
Condensate pump and drum are equipped between steam generation section in hydrogen chloride synthesis tower, the ORC generating set passes through generating set
It is connect with electric power regulating mechanism；Refrigeration compressor, condenser and evaporator, the refrigeration unit are equipped with inside the refrigeration unit
It is connect by refrigeration compressor with electric power regulating mechanism；Between the refrigeration unit and gas-gas heat exchanger be equipped with chlorine gas liquefaction tank and
Liquid chlorine vaporization tank, the chlorine gas liquefaction tank are equipped with exhaust valve.
Further, the chlorine gasifying pot is connect with condenser, and chlorine gas liquefaction tank is connect with evaporator.
Further, liquid chlorine regulating valve is equipped between the chlorine gas liquefaction tank and liquid chlorine vaporization tank.
Further, a method of the hydrogen chloride synthesis system based on total energy approach: hydrogen and chlorine are in chlorination
Synthesis release amount of heat, is used for producing steam for its heat in hydrogen synthetic tower；On the basis of obtaining steam, sent out using ORC
The portion of energy in steam is converted electric energy by motor group；Electric energy is in electric adjustment in the electric energy and power grid that generating set is obtained
It is adjusted in device, and drives refrigeration unit；Refrigeration unit condenser release heat for realizing low temperature liquid chlorine vaporization,
And the evaporator of refrigeration unit is used to absorb the liquefaction that heat realizes chlorine；The high temperature of low temperature chlorine and technique production after vaporization
Chlorine carries out heat exchange in gas-gas heat exchanger, realizes the step comprehensive utilization of the energy.
Beneficial effect
1, the hydrogen chloride synthesis system proposed by the present invention based on total energy approach, by the comprehensive utilization of the step of the energy and
Chemical reaction is made full use of to generate energy；Energy-saving effect is fabulous；
2, the hydrogen chloride synthesis system proposed by the present invention based on total energy approach is discharged chlorine and hydrogen synthesis
Heat realizes that converting heat is electric energy for generating steam, while by steam drive ORC electricity generation system, and by generated electric energy
Pass through the refrigeration system of electric power regulating mechanism drive system；Energy utilization rate is high；
3, the hydrogen chloride synthesis system proposed by the present invention based on total energy approach, the condenser in refrigeration system discharge heat
Amount is used for liquid chlorine vaporization, and evaporator absorbs heat and is used for chlorine gas liquefaction, and comprehensive utilization of energy, refrigeration system efficiency is very high；
4, the hydrogen chloride synthesis system proposed by the present invention based on total energy approach utilizes gas-gas heat exchanger by the heat of chlorine
Amount comprehensive utilization, not only improves the synthesis of synthetic tower hydrogen chloride, and be conducive to the liquefaction of the chlorine containing impurity, energy-saving effect is bright
It is aobvious.
Detailed description of the invention
Fig. 1 is the working principle of the invention figure.
In figure: 1- hydrogen chloride synthesis tower, 11- drum, 2-ORC generating set, 21- generating set, 22- condensate pump, 3-
Electric power regulating mechanism, 4- refrigeration unit, 41- refrigeration compressor, 5- gas-gas heat exchanger, 6- condenser, 7- evaporator, 8- chlorine liquid
Change tank, 81- exhaust valve, 9- liquid chlorine vaporization tank, 10- liquid chlorine regulating valve.
Specific embodiment
With reference to the accompanying drawing, most preferred embodiment is described in detail, but protection scope of the present invention is not limited to institute
State embodiment.
As shown in Figure 1, a kind of hydrogen chloride synthesis system based on total energy approach of the present invention, including cooling tower, chlorination
Hydrogen synthetic tower 1, ORC generating set 2, electric power regulating mechanism 3, refrigeration unit 4 and gas-gas heat exchanger 5, inside hydrogen chloride synthesis tower 1
It is followed successively by synthesis stage, steam generation section and cooling section from the bottom up；Generating set 21 is equipped with inside the ORC generating set 2, it is cold
Condenser 6 and evaporator 7；It is set between the steam generation section in evaporator 7 and hydrogen chloride synthesis tower 1 in the ORC generating set 2
There are condensate pump 22 and drum 11, the ORC generating set 2 is connect by generating set 21 with electric power regulating mechanism 3；The system
Inside cold group 4 be equipped with refrigeration compressor 41, condenser 6 and evaporator 7, the refrigeration unit 4 by refrigeration compressor 41 with
Electric power regulating mechanism 3 connects；Chlorine gas liquefaction tank 8 and liquid chlorine vaporization tank 9 are equipped between the refrigeration unit 4 and gas-gas heat exchanger 6,
8 are equipped with exhaust valve 81 on the chlorine gas liquefaction tank, and the chlorine gasifying pot 9 is connect with condenser 6, chlorine gas liquefaction tank 8 and evaporator 7
Connection.Liquid chlorine regulating valve 10 is equipped between the chlorine gas liquefaction tank 8 and liquid chlorine vaporization tank 9.
Basic principle in specific implementation is as follows: from gas-gas heat exchanger 5 come out room temperature chlorine (30 DEG C) and hydrogen into
Enter hydrogen chloride synthesis tower 1, chlorine and hydrogen first is lighted in the synthesis stage of hydrogen chloride synthesis tower 1, and steam generation is entered after synthesis
The hydrogen chloride of synthesis is reduced to suitable temperature subsequently into cooling tower and from chlorination by section, and discharge amount of heat in the section
It is discharged in hydrogen synthetic tower 1.In 1 synthesis stage of hydrogen chloride synthesis tower, enters the section from the cooling water in cooling tower, control synthesis stage
Temperature to suitable temperature, be then discharged out and flow back to cooling tower；Enter cooling section, control outlet chlorination from the cooling water in cooling tower
Hydrogen temperature is then discharged out to suitable temperature and flows back to cooling tower；For the steam generation section in hydrogen chloride synthesis tower 1, saturated liquid
Water flows into evaporator section wall surface by 11 lower part of drum, and then the heated gaseous state vapor that becomes of liquid water flows back to drum 11, to produce
Raw steam.Vapor flows into the evaporator 7 of ORC generating set 2 under the driving of pressure, and release heat is condensed into liquid simultaneously
Water, liquid water flow back to drum 11 under the action of condensate pump 22；The cooling water of cooling tower enters the condensation of ORC generating set 2
Device 6 flows back to condenser 6 after absorbing heat, and ORC generating set 2 obtains electric energy in the process；ORC generating set 2 and power grid mistake
The electric energy come enters refrigeration unit 4 by electric power regulating mechanism 3, and driving refrigeration unit 4 is run；The evaporator 7 of refrigeration unit 4 produces
Raw cryogenic freezing solution is by chlorine gas liquefaction (- 25 DEG C), after wherein incoagulable gas and impurity are handled by exhaust valve 81 in chlorine
Discharge；The condenser 6 of refrigeration unit 4 generates heat and liquid chlorine (- 25 DEG C) is vaporizated into chlorine；Chlorine gas liquefaction tank 8 and liquid chlorine vaporization
Tank 9 is adjusted by liquid chlorine regulating valve 10 realizes the transfer of liquid chlorine volume；The chlorine that chlorine (- 25 DEG C) and caustic soda after vaporization are synthetically produced
After gas (60 DEG C) exchanges heat in gas-gas heat exchanger 5, pure chlorine (30 DEG C) and hydrogen enter hydrogen chloride synthesis tower 1, complete circulation；
And the chlorine containing impurity cools down into after crossing gas-gas heat exchanger 5 and enters chlorine gas liquefaction tank 8, completes system circulation.
Those skilled in the art scholar will be understood that, can although specific embodiment has been described for the ease of explaining here
Various changes are made without departing from the spirit and scope of the invention.Therefore, except as by the appended claims, Bu Nengyong
In the limitation present invention.
Claims (4)
1. a kind of hydrogen chloride synthesis system based on total energy approach, including cooling tower, hydrogen chloride synthesis tower (1), ORC power generation
Unit (2), electric power regulating mechanism (3), refrigeration unit (4) and gas-gas heat exchanger (5), it is characterised in that: hydrogen chloride synthesis tower (1)
Inside is followed successively by synthesis stage, steam generation section and cooling section from the bottom up；Generator is equipped with inside the ORC generating set (2)
Group (21), condenser (6) and evaporator (7)；The ORC generating set (2) inner evaporator (7) and hydrogen chloride synthesis tower (1)
In steam generation section between be equipped with condensate pump (22) and drum (11), the ORC generating set (2) passes through generating set
(21) it is connect with electric power regulating mechanism (3)；Refrigeration compressor (41) are equipped with inside the refrigeration unit (4), condenser (6) and steaming
It sends out device (7), the refrigeration unit (4) is connect by refrigeration compressor (41) with electric power regulating mechanism (3)；The refrigeration unit
(4) chlorine gas liquefaction tank (8) and liquid chlorine vaporization tank (9) are equipped between gas-gas heat exchanger (6), (8) are set on the chlorine gas liquefaction tank
There are exhaust valve (81).
2. the hydrogen chloride synthesis system based on total energy approach according to claim 1, it is characterised in that: the chlorine
Gasifying pot (9) is connect with condenser (6), and chlorine gas liquefaction tank (8) is connect with evaporator (7).
3. the hydrogen chloride synthesis system according to claim 2 based on total energy approach, it is characterised in that: the chlorine
Liquid chlorine regulating valve (10) are equipped between liquefied pot (8) and liquid chlorine vaporization tank (9).
4. a kind of method of hydrogen chloride synthesis system based on total energy approach point, it is characterised in that: hydrogen and chlorine are in chlorination
Synthesis release amount of heat, is used for producing steam for its heat in hydrogen synthetic tower (1)；On the basis of obtaining steam, ORC is utilized
The portion of energy in steam is converted electric energy by generating set (2)；Electric energy in the electric energy and power grid that generating set (21) are obtained
It is adjusted in electric power regulating mechanism (3), and drives refrigeration unit (4)；The condenser (6) of refrigeration unit (4) discharges heat
For realizing the vaporization of low temperature liquid chlorine, and the evaporator (7) of refrigeration unit (4) is used to absorb the liquefaction that heat realizes chlorine；Vapour
The high temperature chlorine of low temperature chlorine and technique production after change carries out heat exchange in gas-gas heat exchanger (5), realizes the step of the energy
Comprehensive utilization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910170154.8A CN109879251B (en) | 2019-03-07 | Hydrogen chloride synthesis system based on energy comprehensive utilization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910170154.8A CN109879251B (en) | 2019-03-07 | Hydrogen chloride synthesis system based on energy comprehensive utilization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109879251A true CN109879251A (en) | 2019-06-14 |
| CN109879251B CN109879251B (en) | 2024-05-03 |
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