CN205442634U - Retrieve device of hydrochloric acid in follow copper ashes dechlorination tail gas - Google Patents
Retrieve device of hydrochloric acid in follow copper ashes dechlorination tail gas Download PDFInfo
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- CN205442634U CN205442634U CN201620012790.XU CN201620012790U CN205442634U CN 205442634 U CN205442634 U CN 205442634U CN 201620012790 U CN201620012790 U CN 201620012790U CN 205442634 U CN205442634 U CN 205442634U
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- hydrochloric acid
- acid
- tail gas
- acid solution
- graphite
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- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 title claims abstract description 207
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 239000010949 copper Substances 0.000 title claims abstract description 49
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 49
- 238000006298 dechlorination reaction Methods 0.000 title claims abstract description 43
- 235000002918 Fraxinus excelsior Nutrition 0.000 title claims abstract description 42
- 239000002956 ash Substances 0.000 title claims abstract description 42
- 239000002253 acid Substances 0.000 claims abstract description 98
- 238000010521 absorption reaction Methods 0.000 claims abstract description 60
- 230000008929 regeneration Effects 0.000 claims abstract description 19
- 238000011069 regeneration method Methods 0.000 claims abstract description 19
- 239000010410 layer Substances 0.000 claims description 35
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 32
- 229910002804 graphite Inorganic materials 0.000 claims description 32
- 239000010439 graphite Substances 0.000 claims description 32
- 239000007921 spray Substances 0.000 claims description 29
- 238000006555 catalytic reaction Methods 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000012856 packing Methods 0.000 claims description 13
- 239000002826 coolant Substances 0.000 claims description 11
- 239000000498 cooling water Substances 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 11
- 239000011229 interlayer Substances 0.000 claims description 10
- 230000003197 catalytic effect Effects 0.000 claims description 6
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 16
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 238000011084 recovery Methods 0.000 abstract description 4
- 150000003839 salts Chemical class 0.000 abstract 3
- 238000002224 dissection Methods 0.000 abstract 1
- 238000004321 preservation Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 90
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 47
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 47
- 238000003756 stirring Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 11
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 7
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000000746 purification Methods 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000003795 desorption Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 229910001510 metal chloride Inorganic materials 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000011552 falling film Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- DKAGJZJALZXOOV-UHFFFAOYSA-N hydrate;hydrochloride Chemical compound O.Cl DKAGJZJALZXOOV-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Abstract
The utility model relates to a retrieve device of hydrochloric acid in follow copper ashes dechlorination tail gas belongs to tail gas treatment and salt acid recovery technical field. The acid pump is passed through in proper order in hydrochloric acid solution export in the device's the salt acid absorption tower, the bottom entry of microwave heating stove is connected to the check valve, tail gas export pipeline in the salt acid absorption tower connects the microwave heating stove, be equipped with the heat preservation on the pipeline of tail gas export, the inside central with dissection stove courage of microwave heating stove, tail gas export after microwave heating stove lower extreme is equipped with the raffinate export and cools off, be equipped with the level gauge on the microwave heating stove, the hydrochloric acid steam outlet of microwave heating furnace roof portion passes through the pipeline and is connected with the condenser, be equipped with the thermometer on this pipeline, manometer and relief valve, the condenser export is connected through vacuum pump and regeneration acid tank. The device simple structure, operation stability, this method principle is simple, and the process links up.
Description
Technical field
This utility model relates to a kind of device reclaiming hydrochloric acid from copper ashes dechlorination tail gas, belongs to vent gas treatment and HCl recovery technical field.
Background technology
Along with the development of modern industry, the waste liquid of containing hydrogen chloride, waste gas recovery utilize becomes the link that scientist pays close attention to.Wherein hydrogen chloride waste liquid essentially from smeltery and the pickling of material processing and forming factory, its pickling task weight, required acid solution amount is big, and the spent acid liquid measure of generation is the biggest；The source of containing hydrogen chloride waste gas includes the production process of polysilicon, dchlorine metallurgy process and the artificial lamp of chloride slag high temperature dechlorination.Whether the proposition to improvement of the ecological environment, the protection to environment, or from the point of view of economizing on resources, the process to containing hydrogen chloride waste liquid and waste gas is the most significant.At present, the recycling research to containing hydrogen chloride waste gas also makes remarkable progress, and the patent related to includes: the aqueous muriatic lixiviating solution of roasting obtains metal-oxide and the 92114692.2 of gas containing hydrogen chloride；Use that combined absorbing tower and diluted acid desorption tower combine 200710069783.9；Chloride for high temperature flue gas is cooled to less than 80 DEG C, through high-valency metal chloride cleaning dust, then with water or dilute hydrochloric acid absorbing hydrogen chloride, prepares the 201110400545.8 of hydrochloric acid；Absorb, through absorption by Hydrochloric Acid tank, the hydrochloric acid that acquisition is clean with purer hydrogen chloride gas, the 201020592958.1 of alkali liquor neutralization will be discharged and add through acid-proof pump for absorbed hydrogen chloride；The mixed gas of containing hydrogen chloride and sulfur dioxide is carried out through bubbler, falling film absorption, packing material absorbing, sulfur dioxide packing material absorbing and vent gas treatment the 201110316612.8 of separation and recovery utilization；Hydrogen chloride gas containing organic impurities is carried out gas-liquid separation through the low temperature of subzero less than 10 DEG C, then absorbs and two-stage graphite film-falling absorption tower obtains the 200610051995.X of high purity hydrochloric acid through activated carbon；By water scrubber and regular hydrochloric acid desorption system with the use of absorbing the 201320140148.6 of the vinyl chloride gas being entrained with hydrogen chloride gas；By the industrial wastewater of containing hydrogen chloride through autoclave evaporator evaporation, gained steam, again through dehydration rectifying column dehydration, concentration vaporizer concentration and evaporation, mixes with the hydrogen chloride gas of desorption still abjection and condenser condensation obtains the 2011202086171.7 of concentrated hydrochloric acid；By the waste liquid of containing hydrogen chloride under the pressure of 0.5～0.8 atmospheric pressure (0.05～0.08MPa) the 201210298362.4 of heated by microwave explosive evaporation.
It is many all to there is the equipment related in above-mentioned technique, and process procedure is complicated, and process conditions are harsh, and lacks the hydrogen chloride gas processing method containing metal chloride.
Summary of the invention
The problem existed for above-mentioned prior art and deficiency, this utility model provides a kind of device reclaiming hydrochloric acid from copper ashes dechlorination tail gas.This apparatus structure is simple, stable, and floor space is little, it is possible to effectively absorbing the hydrogen chloride gas in dechlorination copper ashes tail gas, and recycle heat energy in dechlorination copper ashes tail gas, this utility model is achieved through the following technical solutions.
nullA kind of device reclaiming hydrochloric acid from copper ashes dechlorination tail gas，Including hydrochloric acid absorption tower 1、Heat-insulation layer 2、Microwave oven 3、Thermometer 4、Pressure gauge 5、Relief valve 6、Liquidometer 7、Condenser 8、Regeneration acid tank 11、Vacuum pump 12、Check-valves 13 and acid pump 14，Hydrochloric acid solution outlet in hydrochloric acid absorption tower 1 sequentially passes through acid pump 14、Check-valves 13 connects the bottom inlet of microwave oven 3，Offgas outlet pipeline in hydrochloric acid absorption tower 1 connects microwave oven 3，The pipeline of offgas outlet is provided with heat-insulation layer 2，Microwave oven 3 center of inside is provided with interlayer flue 9，Microwave oven 3 lower end is provided with the offgas outlet after residual liquid outlet 10 and cooling，Microwave oven 3 is provided with liquidometer 7，The hydrochloric acid vapour outlet at microwave oven 3 top is connected with condenser 8 by pipeline，This pipeline is provided with thermometer 4、Pressure gauge 5 and relief valve 6，Condenser 8 is exported and is connected with regeneration acid tank 11 by vacuum pump 12；
The described outer viewing of hydrochloric acid absorption tower 1 includes the furnace crown 1-2 on top, the body of heater 1-11 coordinated with furnace crown 1-2, the fixed gas outlet 1-1 being arranged on furnace crown 1-2 top and communicate inside body of heater 1-11, support the stove socle 1-8 of body of heater 1-11, exhaust gas entrance 1-7 that body of heater 1-11 interior bottom portion communicates and the acid solution that interior bottom portion opposite side communicates outlet 1-10, microwave catalysis section M on top it is divided into inside body of heater 1-11, acid solution spray section N the most down, graphite heat exchanging segment K and double absorption section L, microwave catalysis section M includes the microwave source 1-3 of outside, microwave catalysis section M two ends are all respectively equipped with graphite packing 1-14, ozone the most downward for top graphite packing 1-14 produces layer 1-27, inertia Catalytic Layer 1-15 and molecule destroy layer 1-26；Acid solution spray section N include internal shower 1-16, gas distributor head 1-24 bottom acid solution spray section N and the acid solution spray section N top being connected of the diluted acid entrance 1-13 being connected with acid solution allotter 1-4 and acid solution allotter 1-4 that acid solution allotter 1-4 that outside is provided with, outside are provided with except water layer 1-25；Graphite heat exchanging segment K includes the condenser coil 1-23 of suit on the graphite-pipe dish 1-18 of the cooled water distributor 1-5 of coolant outlet 1-6 of the cooling water inlet 1-12 of exterior upper, the coolant outlet 1-6 of bottom, external connection cooling water inlet 1-12 and bottom, graphite heat exchanging segment K top and bottom, the graphite-pipe 1-17 being arranged on graphite-pipe dish 1-18, graphite-pipe 1-17；Double absorption section L includes packed bed 1-20, rod stirrer 1-9 of center of inside that inside circumference is provided with.
Above-mentioned body of heater 1-11 is internal is provided with drainage screen 1-19 with exhaust gas entrance 1-7 connectivity part.
Above-mentioned rod stirrer 1-9 includes motor, be connected with motor rod-type stirring main shaft 1-21 and the stirring blade 1-22 being contained on rod-type stirring main shaft 1-21.
The application process of a kind of device reclaiming hydrochloric acid from copper ashes dechlorination tail gas, it specifically comprises the following steps that
null(1) it is 150～250 DEG C of copper ashes dechlorination tail gas by temperature and is passed in the material inlet (exhaust gas entrance 1-7) of hydrochloric acid absorption tower 1 double absorption section L containing the steam of 3～8wt% hydrogen chloride，Copper ashes dechlorination tail gas and being flowed at graphite heat exchanging segment K containing 3～8wt% hydrogen chloride，It is cooled to temperature be 30～50 DEG C and be sprayed onto acid solution spray section N from gas distributor head 1-24，The diluted acid entrance 1-13 of acid solution spray section N is passed through the dilute hydrochloric acid that concentration is 3～5wt% in the process，Copper ashes dechlorination tail gas and after mixing with dilute hydrochloric acid containing the steam of 3～8wt% hydrogen chloride and absorb copper ashes dechlorination tail gas and the steam containing 3～8wt% hydrogen chloride obtains absorption by Hydrochloric Acid liquid，Then the copper ashes dechlorination tail gas being flowed in double absorption section L and be passed through from material inlet (exhaust gas entrance 1-7) and the steam of hydrogen chloride absorb again，Final acquisition concentration is the dilute hydrochloric acid of 8～10wt%，Not having absorbed tail gas to be passed into after microwave catalysis section M adds thermal purification in microwave oven 3 makes interlayer flue 9 be heated；
(2) 8～the dilute hydrochloric acid of 10% that are obtained by hydrochloric acid absorption tower 1 are passed into bottom microwave oven 3, microwave power be 200～400kw, temperature be 90～110 DEG C, vacuum be to carry out microwave heating under the conditions of 200～300mbar, final gas containing hydrogen chloride flows out from microwave oven 3 top to be collected regeneration acid tank 11 through condenser 8, and in regeneration acid tank 11, the concentration of hydrochloric acid is 15～25%.
Containing hydrogen chloride 50～120ppm in described copper ashes dechlorination tail gas, copper and zinc ion total concentration are 0.5～5g/L.
The beneficial effects of the utility model are: this apparatus structure is simple, stable, and floor space is little, it is possible to effectively absorb the hydrogen chloride gas in dechlorination copper ashes tail gas, and recycle heat energy in dechlorination copper ashes tail gas.
Accompanying drawing explanation
Fig. 1 is this utility model apparatus structure schematic diagram；
Fig. 2 is this utility model hydrochloric acid absorption tower external structure schematic diagram；
Fig. 3 is this utility model hydrochloric acid absorption tower internal structure schematic diagram A；
Fig. 4 is this utility model hydrochloric acid absorption tower internal structure schematic diagram B.
nullIn figure: 1-hydrochloric acid absorption tower，2-heat-insulation layer，3-microwave oven，4-thermometer，5-Pressure gauge，6-relief valve，7-liquidometer，8-condenser，9-interlayer flue，10-residual liquid exports，11-regenerates acid tank，12-vacuum pump，13-check-valves，14-acid pump，1-1-fixed gas exports，1-2-furnace crown，1-3-microwave source，1-4-acid solution allotter，1-5-cooled water distributor，1-6-coolant outlet，1-7-exhaust gas entrance，1-8-stove socle，1-9-rod stirrer，1-10-acid solution exports，1-11-body of heater，1-12-cooling water inlet，1-13-diluted acid entrance，1-14-graphite packing，1-15-inertia Catalytic Layer，1-16-shower，1-17-graphite-pipe，1-18-graphite-pipe dish，1-19-drainage screen，1-20-packed bed，1-21-rod-type stirring main shaft，1-22-stirs blade，1-23-condenser coil，1-24-gas distributor head，1-25-removes water layer，1-26-molecule destroys layer，1-27-ozone produces layer，M-microwave catalysis section，N-spray section，K-graphite heat exchanging segment，L-double absorption section.
Detailed description of the invention
Below in conjunction with the accompanying drawings and detailed description of the invention, the utility model is described in further detail.
Embodiment 1
nullAs shown in Figures 1 to 4，The device of hydrochloric acid should be reclaimed from copper ashes dechlorination tail gas，Including hydrochloric acid absorption tower 1、Heat-insulation layer 2、Microwave oven 3、Thermometer 4、Pressure gauge 5、Relief valve 6、Liquidometer 7、Condenser 8、Regeneration acid tank 11、Vacuum pump 12、Check-valves 13 and acid pump 14，Hydrochloric acid solution outlet in hydrochloric acid absorption tower 1 sequentially passes through acid pump 14、Check-valves 13 connects the bottom inlet of microwave oven 3，Offgas outlet pipeline in hydrochloric acid absorption tower 1 connects microwave oven 3，The pipeline of offgas outlet is provided with heat-insulation layer 2，Microwave oven 3 center of inside is provided with interlayer flue 9，Microwave oven 3 lower end is provided with the offgas outlet after residual liquid outlet 10 and cooling，Microwave oven 3 is provided with liquidometer 7，The hydrochloric acid vapour outlet at microwave oven 3 top is connected with condenser 8 by pipeline，This pipeline is provided with thermometer 4、Pressure gauge 5 and relief valve 6，Condenser 8 is exported and is connected with regeneration acid tank 11 by vacuum pump 12；
The described outer viewing of hydrochloric acid absorption tower 1 includes the furnace crown 1-2 on top, the body of heater 1-11 coordinated with furnace crown 1-2, the fixed gas outlet 1-1 being arranged on furnace crown 1-2 top and communicate inside body of heater 1-11, support the stove socle 1-8 of body of heater 1-11, exhaust gas entrance 1-7 that body of heater 1-11 interior bottom portion communicates and the acid solution that interior bottom portion opposite side communicates outlet 1-10, microwave catalysis section M on top it is divided into inside body of heater 1-11, acid solution spray section N the most down, graphite heat exchanging segment K and double absorption section L, microwave catalysis section M includes the microwave source 1-3 of outside, microwave catalysis section M two ends are all respectively equipped with graphite packing 1-14, ozone the most downward for top graphite packing 1-14 produces layer 1-27, inertia Catalytic Layer 1-15 and molecule destroy layer 1-26；Acid solution spray section N include internal shower 1-16, gas distributor head 1-24 bottom acid solution spray section N and the acid solution spray section N top being connected of the diluted acid entrance 1-13 being connected with acid solution allotter 1-4 and acid solution allotter 1-4 that acid solution allotter 1-4 that outside is provided with, outside are provided with except water layer 1-25；Graphite heat exchanging segment K includes the condenser coil 1-23 of suit on the graphite-pipe dish 1-18 of the cooled water distributor 1-5 of coolant outlet 1-6 of the cooling water inlet 1-12 of exterior upper, the coolant outlet 1-6 of bottom, external connection cooling water inlet 1-12 and bottom, graphite heat exchanging segment K top and bottom, the graphite-pipe 1-17 being arranged on graphite-pipe dish 1-18, graphite-pipe 1-17；Double absorption section L includes packed bed 1-20, rod stirrer 1-9 of center of inside that inside circumference is provided with.
Wherein body of heater 1-11 is internal is provided with drainage screen 1-19 with exhaust gas entrance 1-7 connectivity part；Rod stirrer 1-9 includes motor, be connected with motor rod-type stirring main shaft 1-21 and the stirring blade 1-22 being contained on rod-type stirring main shaft 1-21.
Should reclaim the application process of the device of hydrochloric acid from copper ashes dechlorination tail gas, it specifically comprises the following steps that
null(1) it is 250 DEG C of copper ashes dechlorination tail gas (containing hydrogen chloride 120ppm in copper ashes dechlorination tail gas by temperature，Copper and zinc ion total concentration are 5g/L) and be passed in the material inlet (exhaust gas entrance 1-7) of hydrochloric acid absorption tower 1 double absorption section L containing the steam of 3wt% hydrogen chloride，Copper ashes dechlorination tail gas and being flowed at graphite heat exchanging segment K containing 3wt% hydrogen chloride，It is cooled to temperature be 50 DEG C and be sprayed onto acid solution spray section N from gas distributor head 1-24，The diluted acid entrance 1-13 of acid solution spray section N is passed through the dilute hydrochloric acid that concentration is 5wt% in the process，Copper ashes dechlorination tail gas and after mixing with dilute hydrochloric acid containing the steam of 3wt% hydrogen chloride and absorb copper ashes dechlorination tail gas and the steam containing 3wt% hydrogen chloride obtains absorption by Hydrochloric Acid liquid，Then the copper ashes dechlorination tail gas being flowed in double absorption section L and be passed through from material inlet (exhaust gas entrance 1-7) and the steam of hydrogen chloride absorb again，The final concentration that obtains is the dilute hydrochloric acid of 10wt%，Not having absorbed tail gas to be passed into after microwave catalysis section M adds thermal purification in microwave oven 3 makes interlayer flue 9 be heated；
(2) dilute hydrochloric acid of 10% obtained by hydrochloric acid absorption tower 1 is passed into bottom microwave oven 3, microwave power be 200kw, temperature be 110 DEG C, vacuum be 300mbar under the conditions of carry out microwave heating, final gas containing hydrogen chloride flows out from microwave oven 3 top to be collected regeneration acid tank 11 through condenser 8, in regeneration acid tank 11, the concentration of hydrochloric acid is 25%, and copper and zinc ion total concentration are 50mg/L.
Embodiment 2
nullAs shown in Figures 1 to 4，The device of hydrochloric acid should be reclaimed from copper ashes dechlorination tail gas，Including hydrochloric acid absorption tower 1、Heat-insulation layer 2、Microwave oven 3、Thermometer 4、Pressure gauge 5、Relief valve 6、Liquidometer 7、Condenser 8、Regeneration acid tank 11、Vacuum pump 12、Check-valves 13 and acid pump 14，Hydrochloric acid solution outlet in hydrochloric acid absorption tower 1 sequentially passes through acid pump 14、Check-valves 13 connects the bottom inlet of microwave oven 3，Offgas outlet pipeline in hydrochloric acid absorption tower 1 connects microwave oven 3，The pipeline of offgas outlet is provided with heat-insulation layer 2，Microwave oven 3 center of inside is provided with interlayer flue 9，Microwave oven 3 lower end is provided with the offgas outlet after residual liquid outlet 10 and cooling，Microwave oven 3 is provided with liquidometer 7，The hydrochloric acid vapour outlet at microwave oven 3 top is connected with condenser 8 by pipeline，This pipeline is provided with thermometer 4、Pressure gauge 5 and relief valve 6，Condenser 8 is exported and is connected with regeneration acid tank 11 by vacuum pump 12；
The described outer viewing of hydrochloric acid absorption tower 1 includes the furnace crown 1-2 on top, the body of heater 1-11 coordinated with furnace crown 1-2, the fixed gas outlet 1-1 being arranged on furnace crown 1-2 top and communicate inside body of heater 1-11, support the stove socle 1-8 of body of heater 1-11, exhaust gas entrance 1-7 that body of heater 1-11 interior bottom portion communicates and the acid solution that interior bottom portion opposite side communicates outlet 1-10, microwave catalysis section M on top it is divided into inside body of heater 1-11, acid solution spray section N the most down, graphite heat exchanging segment K and double absorption section L, microwave catalysis section M includes the microwave source 1-3 of outside, microwave catalysis section M two ends are all respectively equipped with graphite packing 1-14, ozone the most downward for top graphite packing 1-14 produces layer 1-27, inertia Catalytic Layer 1-15 and molecule destroy layer 1-26；Acid solution spray section N include internal shower 1-16, gas distributor head 1-24 bottom acid solution spray section N and the acid solution spray section N top being connected of the diluted acid entrance 1-13 being connected with acid solution allotter 1-4 and acid solution allotter 1-4 that acid solution allotter 1-4 that outside is provided with, outside are provided with except water layer 1-25；Graphite heat exchanging segment K includes the condenser coil 1-23 of suit on the graphite-pipe dish 1-18 of the cooled water distributor 1-5 of coolant outlet 1-6 of the cooling water inlet 1-12 of exterior upper, the coolant outlet 1-6 of bottom, external connection cooling water inlet 1-12 and bottom, graphite heat exchanging segment K top and bottom, the graphite-pipe 1-17 being arranged on graphite-pipe dish 1-18, graphite-pipe 1-17；Double absorption section L includes packed bed 1-20, rod stirrer 1-9 of center of inside that inside circumference is provided with.
Wherein body of heater 1-11 is internal is provided with drainage screen 1-19 with exhaust gas entrance 1-7 connectivity part；Rod stirrer 1-9 includes motor, be connected with motor rod-type stirring main shaft 1-21 and the stirring blade 1-22 being contained on rod-type stirring main shaft 1-21.
Should reclaim the application process of the device of hydrochloric acid from copper ashes dechlorination tail gas, it specifically comprises the following steps that
null(1) it is 150 DEG C of copper ashes dechlorination tail gas (containing hydrogen chloride 50ppm in copper ashes dechlorination tail gas by temperature，Copper and zinc ion total concentration are 0.5g/L) and be passed in the material inlet (exhaust gas entrance 1-7) of hydrochloric acid absorption tower 1 double absorption section L containing the steam of 8wt% hydrogen chloride，Copper ashes dechlorination tail gas and being flowed at graphite heat exchanging segment K containing 8wt% hydrogen chloride，It is cooled to temperature be 30 DEG C and be sprayed onto acid solution spray section N from gas distributor head 1-24，The diluted acid entrance 1-13 of acid solution spray section N is passed through the dilute hydrochloric acid that concentration is 3wt% in the process，Copper ashes dechlorination tail gas and after mixing with dilute hydrochloric acid containing the steam of 8wt% hydrogen chloride and absorb copper ashes dechlorination tail gas and the steam containing 8wt% hydrogen chloride obtains absorption by Hydrochloric Acid liquid，Then the copper ashes dechlorination tail gas being flowed in double absorption section L and be passed through from material inlet (exhaust gas entrance 1-7) and the steam of hydrogen chloride absorb again，The final concentration that obtains is the dilute hydrochloric acid of 8wt%，Not having absorbed tail gas to be passed into after microwave catalysis section M adds thermal purification in microwave oven 3 makes interlayer flue 9 be heated；
(2) dilute hydrochloric acid of 8% obtained by hydrochloric acid absorption tower 1 is passed into bottom microwave oven 3, microwave power be 400kw, temperature be 90 DEG C, vacuum be 200mbar under the conditions of carry out microwave heating, final gas containing hydrogen chloride flows out from microwave oven 3 top to be collected regeneration acid tank 11 through condenser 8, in regeneration acid tank 11, the concentration of hydrochloric acid is 15%, and copper and zinc ion total concentration are 10mg/L.
Embodiment 3
nullAs shown in Figures 1 to 4，The device of hydrochloric acid should be reclaimed from copper ashes dechlorination tail gas，Including hydrochloric acid absorption tower 1、Heat-insulation layer 2、Microwave oven 3、Thermometer 4、Pressure gauge 5、Relief valve 6、Liquidometer 7、Condenser 8、Regeneration acid tank 11、Vacuum pump 12、Check-valves 13 and acid pump 14，Hydrochloric acid solution outlet in hydrochloric acid absorption tower 1 sequentially passes through acid pump 14、Check-valves 13 connects the bottom inlet of microwave oven 3，Offgas outlet pipeline in hydrochloric acid absorption tower 1 connects microwave oven 3，The pipeline of offgas outlet is provided with heat-insulation layer 2，Microwave oven 3 center of inside is provided with interlayer flue 9，Microwave oven 3 lower end is provided with the offgas outlet after residual liquid outlet 10 and cooling，Microwave oven 3 is provided with liquidometer 7，The hydrochloric acid vapour outlet at microwave oven 3 top is connected with condenser 8 by pipeline，This pipeline is provided with thermometer 4、Pressure gauge 5 and relief valve 6，Condenser 8 is exported and is connected with regeneration acid tank 11 by vacuum pump 12；
The described outer viewing of hydrochloric acid absorption tower 1 includes the furnace crown 1-2 on top, the body of heater 1-11 coordinated with furnace crown 1-2, the fixed gas outlet 1-1 being arranged on furnace crown 1-2 top and communicate inside body of heater 1-11, support the stove socle 1-8 of body of heater 1-11, exhaust gas entrance 1-7 that body of heater 1-11 interior bottom portion communicates and the acid solution that interior bottom portion opposite side communicates outlet 1-10, microwave catalysis section M on top it is divided into inside body of heater 1-11, acid solution spray section N the most down, graphite heat exchanging segment K and double absorption section L, microwave catalysis section M includes the microwave source 1-3 of outside, microwave catalysis section M two ends are all respectively equipped with graphite packing 1-14, ozone the most downward for top graphite packing 1-14 produces layer 1-27, inertia Catalytic Layer 1-15 and molecule destroy layer 1-26；Acid solution spray section N include internal shower 1-16, gas distributor head 1-24 bottom acid solution spray section N and the acid solution spray section N top being connected of the diluted acid entrance 1-13 being connected with acid solution allotter 1-4 and acid solution allotter 1-4 that acid solution allotter 1-4 that outside is provided with, outside are provided with except water layer 1-25；Graphite heat exchanging segment K includes the condenser coil 1-23 of suit on the graphite-pipe dish 1-18 of the cooled water distributor 1-5 of coolant outlet 1-6 of the cooling water inlet 1-12 of exterior upper, the coolant outlet 1-6 of bottom, external connection cooling water inlet 1-12 and bottom, graphite heat exchanging segment K top and bottom, the graphite-pipe 1-17 being arranged on graphite-pipe dish 1-18, graphite-pipe 1-17；Double absorption section L includes packed bed 1-20, rod stirrer 1-9 of center of inside that inside circumference is provided with.
Wherein body of heater 1-11 is internal is provided with drainage screen 1-19 with exhaust gas entrance 1-7 connectivity part；Rod stirrer 1-9 includes motor, be connected with motor rod-type stirring main shaft 1-21 and the stirring blade 1-22 being contained on rod-type stirring main shaft 1-21.
Should reclaim the application process of the device of hydrochloric acid from copper ashes dechlorination tail gas, it specifically comprises the following steps that
null(1) it is 200 DEG C of copper ashes dechlorination tail gas (containing hydrogen chloride 90ppm in copper ashes dechlorination tail gas by temperature，Copper and zinc ion total concentration are 2.5g/L) and be passed in the material inlet (exhaust gas entrance 1-7) of hydrochloric acid absorption tower 1 double absorption section L containing the steam of 5wt% hydrogen chloride，Copper ashes dechlorination tail gas and being flowed at graphite heat exchanging segment K containing 5wt% hydrogen chloride，It is cooled to temperature be 40 DEG C and be sprayed onto acid solution spray section N from gas distributor head 1-24，The diluted acid entrance 1-13 of acid solution spray section N is passed through the dilute hydrochloric acid that concentration is 4wt% in the process，Copper ashes dechlorination tail gas and after mixing with dilute hydrochloric acid containing the steam of 5wt% hydrogen chloride and absorb copper ashes dechlorination tail gas and the steam containing 5wt% hydrogen chloride obtains absorption by Hydrochloric Acid liquid，Then the copper ashes dechlorination tail gas being flowed in double absorption section L and be passed through from material inlet (exhaust gas entrance 1-7) and the steam of hydrogen chloride absorb again，The final concentration that obtains is the dilute hydrochloric acid of 9wt%，Not having absorbed tail gas to be passed into after microwave catalysis section M adds thermal purification in microwave oven 3 makes interlayer flue 9 be heated；
(2) dilute hydrochloric acid of 9% obtained by hydrochloric acid absorption tower 1 is passed into bottom microwave oven 3, microwave power be 300kw, temperature be 100 DEG C, vacuum be 250mbar under the conditions of carry out microwave heating, final gas containing hydrogen chloride flows out from microwave oven 3 top to be collected regeneration acid tank 11 through condenser 8, in regeneration acid tank 11, the concentration of hydrochloric acid is 20%, and copper and zinc ion total concentration are 30mg/L.
Above in association with accompanying drawing, detailed description of the invention of the present utility model is explained in detail, but this utility model is not limited to above-mentioned embodiment, in the ken that those of ordinary skill in the art are possessed, it is also possible on the premise of without departing from this utility model objective, various changes can be made.
Claims (1)
- null1. the device reclaiming hydrochloric acid from copper ashes dechlorination tail gas，It is characterized in that: include hydrochloric acid absorption tower (1)、Heat-insulation layer (2)、Microwave oven (3)、Thermometer (4)、Pressure gauge (5)、Relief valve (6)、Liquidometer (7)、Condenser (8)、Regeneration acid tank (11)、Vacuum pump (12)、Check-valves (13) and acid pump (14)，Hydrochloric acid solution outlet in hydrochloric acid absorption tower (1) sequentially passes through acid pump (14)、Check-valves (13) connects the bottom inlet of microwave oven (3)，Offgas outlet pipeline in hydrochloric acid absorption tower (1) connects microwave oven (3)，The pipeline of offgas outlet is provided with heat-insulation layer (2)，Microwave oven (3) center of inside is provided with interlayer flue (9)，Microwave oven (3) lower end is provided with the offgas outlet after residual liquid outlet (10) and cooling，Microwave oven (3) is provided with liquidometer (7)，The hydrochloric acid vapour outlet at microwave oven (3) top is connected with condenser (8) by pipeline，This pipeline is provided with thermometer (4)、Pressure gauge (5) and relief valve (6)，Condenser (8) outlet is connected with regeneration acid tank (11) by vacuum pump (12)；nullDescribed hydrochloric acid absorption tower (1) watches outward the furnace crown (1-2) including top、The body of heater (1-11) coordinated with furnace crown (1-2)、It is arranged on furnace crown (1-2) top fixed gas outlet (1-1) that communicate internal with body of heater (1-11)、Support the stove socle (1-8) of body of heater (1-11)、Exhaust gas entrance (1-7) that body of heater (1-11) interior bottom portion communicates and the acid solution that interior bottom portion opposite side communicates outlet (1-10)，Internal microwave catalysis section M being divided into top of body of heater (1-11)、Acid solution spray section N the most down、Graphite heat exchanging segment K and double absorption section L，Microwave catalysis section M includes the microwave source (1-3) of outside，Microwave catalysis section M two ends are all respectively equipped with graphite packing (1-14)，Ozone generation layer (1-27) that top graphite packing (1-14) is the most downward、Inertia Catalytic Layer (1-15) and molecule destroy layer (1-26)；Acid solution spray section N include the diluted acid entrance (1-13) being connected with acid solution allotter (1-4) that acid solution allotter (1-4) that outside is provided with, outside the are provided with shower (1-16), gas distributor head (1-24) acid solution spray section N bottom and the acid solution spray section N top that are connected internal with acid solution allotter (1-4) except water layer (1-25)；Graphite heat exchanging segment K includes the condenser coil (1-23) of the upper suit of the graphite-pipe dish (1-18) of the cooled water distributor (1-5) of coolant outlet (1-6), graphite heat exchanging segment K top and the bottom of the cooling water inlet (1-12) of exterior upper, the coolant outlet (1-6) of bottom, external connection cooling water inlet (1-12) and bottom, the graphite-pipe (1-17) being arranged on graphite-pipe dish (1-18), graphite-pipe (1-17)；Double absorption section L includes packed bed (1-20), the rod stirrer (1-9) of center of inside that inside circumference is provided with.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620012790.XU CN205442634U (en) | 2016-01-08 | 2016-01-08 | Retrieve device of hydrochloric acid in follow copper ashes dechlorination tail gas |
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| CN201620012790.XU CN205442634U (en) | 2016-01-08 | 2016-01-08 | Retrieve device of hydrochloric acid in follow copper ashes dechlorination tail gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645357A (en) * | 2016-01-08 | 2016-06-08 | 昆明理工大学 | Device and method for recovering hydrochloric acid from copper dross dechlorination tail gas |
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2016
- 2016-01-08 CN CN201620012790.XU patent/CN205442634U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645357A (en) * | 2016-01-08 | 2016-06-08 | 昆明理工大学 | Device and method for recovering hydrochloric acid from copper dross dechlorination tail gas |
| CN105645357B (en) * | 2016-01-08 | 2017-09-29 | 昆明理工大学 | The devices and methods therefor of hydrochloric acid is reclaimed in a kind of dechlorination tail gas from copper ashes |
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