CN209442660U - A kind of CO using carbide slag slurry and methanol device by-product2The system for producing soda ash - Google Patents
A kind of CO using carbide slag slurry and methanol device by-product2The system for producing soda ash Download PDFInfo
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- CN209442660U CN209442660U CN201920048546.2U CN201920048546U CN209442660U CN 209442660 U CN209442660 U CN 209442660U CN 201920048546 U CN201920048546 U CN 201920048546U CN 209442660 U CN209442660 U CN 209442660U
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- ammonia
- carbide slag
- steam
- slag slurry
- gas
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 90
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 title claims abstract description 64
- 239000002893 slag Substances 0.000 title claims abstract description 49
- 239000002002 slurry Substances 0.000 title claims abstract description 37
- 229910000029 sodium carbonate Inorganic materials 0.000 title claims abstract description 25
- 235000017550 sodium carbonate Nutrition 0.000 title claims abstract description 24
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 192
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 95
- 239000012267 brine Substances 0.000 claims abstract description 23
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 23
- 239000006227 byproduct Substances 0.000 claims abstract description 22
- 238000010521 absorption reaction Methods 0.000 claims abstract description 20
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 20
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 claims abstract description 20
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 19
- 238000001354 calcination Methods 0.000 claims abstract description 17
- 150000003839 salts Chemical class 0.000 claims abstract description 16
- 239000007787 solid Substances 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 239000002699 waste material Substances 0.000 claims abstract description 8
- 230000008719 thickening Effects 0.000 claims abstract description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 23
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 20
- 239000012452 mother liquor Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 15
- 230000008676 import Effects 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 14
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 13
- 239000001110 calcium chloride Substances 0.000 claims description 13
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 13
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 12
- 238000004380 ashing Methods 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 11
- 230000008018 melting Effects 0.000 claims description 11
- 239000000292 calcium oxide Substances 0.000 claims description 10
- 235000012255 calcium oxide Nutrition 0.000 claims description 10
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 10
- 239000000725 suspension Substances 0.000 claims description 10
- 239000012065 filter cake Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 239000006228 supernatant Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 238000012216 screening Methods 0.000 claims description 3
- 150000001345 alkine derivatives Chemical class 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 27
- 238000000034 method Methods 0.000 abstract description 20
- 238000004064 recycling Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 10
- 239000002994 raw material Substances 0.000 abstract description 10
- 238000009621 Solvay process Methods 0.000 abstract description 5
- 239000002440 industrial waste Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 27
- 229910002092 carbon dioxide Inorganic materials 0.000 description 14
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 9
- 239000003513 alkali Substances 0.000 description 4
- 235000019270 ammonium chloride Nutrition 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000002562 thickening agent Substances 0.000 description 4
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000005997 Calcium carbide Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 2
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 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
- 235000019738 Limestone Nutrition 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000003359 percent control normalization Methods 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012134 supernatant fraction Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses a kind of CO using carbide slag slurry and methanol device by-product2The system for producing soda ash, the system comprises: concentrator, refined salt pond, ammonia absorption tower, carbonators, filter, calcining furnace and ammonia still, the concentrator obtains the milk of lime that solid content is 24%-27% for carrying out thickening processing to the carbide slag slurry generated from acetylene generator.Carbide slag slurry is used as the milk of lime that recycling ammonia needs in ammonia still in the system, that is, realizes the recycling and reusing of industrial waste carbide slag, reduce carbide slag treatment of wastes produced cost again；Utilize the CO of by-product in methanol device2Raw material of the gas as ammonial brine carbonation reaction, reduces CO in methanol device2The discharge of gas；The CO of carbide slag slurry and methanol device by-product is utilized simultaneously2The raw material for doing soda manufacture reduces the production cost of soda ash, shortens the production procedure of soda ash instead of the limekiln process in traditional ammonia-soda process soda manufacture technique, has achieved the purpose that resources circulation recycles.
Description
Technical field
The utility model belongs to Chemical Manufacture comprehensive utilization of resources field, utilizes carbide slag slurries more particularly, to a kind of
The CO of material and methanol device by-product2The system of gas generation soda ash.
Background technique
In generated by polyvinyl chloride by calcium carbide production technology, granularity is that the calcium carbide of 40~60mm reacts in acetylene generator with water
Acetylene and carbide slag slurry are generated, acetylene is sent with hydrogen chloride to vinyl chloride converter synthesis vinyl chloride thereof after purification, then is polymerize
Produce Corvic.One ton of Corvic is produced, about 6 tons of carbide slag of generation (folding 100%Ca (OH)2It calculates).
For the carbide slag slurry generated in acetylene generator at present mostly after gravitational settling and filtering, supernatant fraction is back to production, and obtains
To carbide slag be then used for for produce cement, with flyash manufacturing bricks by mixing or stacking, this is not only greatly reduced to carbide slag
Recycling value, while carbide slag discharge accumulation great pollution also is caused to environment.
In traditional coal methanol process, a large amount of CO is contained in the water-gas after coal gasification2Gas, through under low temperature
After absorbing using refined methanol, passing through flash distillation and nitrogen stripping, by CO2Gas releases, concentration be not less than 85.7%, and
Regenerate refined methanol, CO2Gas emptying；Produce about 2 tons of one ton of methanol by-product of CO2Gas, this causes environment very big
Pollution.
In traditional ammonia-soda process soda ash technique, limekiln calcined limestone generates quick lime and carbon dioxide, raw
Lime generate 24%~27% after ashing melting machine is reacted with water (be scaled the titre unit that soda industry uses be 150tt~
170tt) the milk of lime of concentration, the circular regeneration for ammonia.The carbon dioxide (concentration 40% or so) that limekiln comes out is washed
It is sent after compression to carbonators and carries out carbonation reaction generation sodium bicarbonate suspension, generate soda ash after calcining using filter.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of CO by by-product in carbide slag slurry and methanol device2
The system that gas is used for soda manufacture recycles value and recycling methanol device by-product CO improving carbide slag2Gas it is same
When, the limekiln process in traditional soda manufacture technique is reduced, the production cost of soda ash is reduced.
The utility model provides the following technical solutions:
A kind of system using carbide slag slurry production soda ash, the carbide slag slurry are described in acetylene generator
System includes: concentrator, refined salt pond, ammonia absorption tower, compressor, carbonators, filter, calcining furnace and ammonia still.
The concentrator obtains solid content for carrying out thickening processing to the carbide slag slurry generated from acetylene generator
For the milk of lime of 24%-27%；It is re-refined after obtaining saturation crude brine for making crude salt be dissolved in water in the refined salt pond
As refined brine；The ammonia absorption tower is connect with the refined salt pond, for generating ammonial brine after so that the refined brine is absorbed ammonia.
The compressor is used for the CO to by-product in methanol device2Gas is passed through the carbonators after being compressed；It is described
Carbonators is connect with the ammonia absorption tower and compressor, for making ammonial brine in the carbonators and CO2Gas is carbonated
Reaction generates sodium bicarbonate suspension；The filter is connect with the carbonators, for the sodium bicarbonate suspension into
Row filtering, obtains natrii bicarbonas filter cake and mother liquor；The calcining furnace is used to carry out the natrii bicarbonas filter cake calcining to be made pure
Alkali.
The ammonia still is connect with the filter and concentrator, for keeping the mother liquor and milk of lime anti-in ammonia still
It answers, steams ammonia.
Preferably, two pipelines are connected between the thickener and acetylene generator, one for will be in acetylene generator
The carbide slag slurry of generation is transported to the thickener, and another for returning to the supernatant that the concentrator overflow generates
Acetylene generator recycling.
An embodiment according to the present utility model, further includes ashing melting machine, and the ashing melting machine is used for quick lime and electricity
The mixing of rock ballast slurry is modulated into the milk of lime that solid content is 24%-27%.
An embodiment according to the present utility model, further includes steam turbine, and the steam turbine is for driving the compression
Machine is to CO2Gas is compressed, and the lack of gas generated after the steam turbine acting send the ammonia still to recycle as steam.
An embodiment according to the present utility model, the calcining furnace are connect with the compressor, and being used for will be calcined
The CO generated in journey2Gas returns to the compressor and recycles.
Preferably, the ammonia still is connect with the ammonia absorption tower, for the ammonia steamed in ammonia still to be passed through the suction
Ammonia tower.
An embodiment according to the present utility model, further includes calcium chloride device, the calcium chloride device and the steaming
Calcium chloride solid is made for handling the evaporated waste ammonia liquid generated in the ammonia still in the connection of ammonia tower.
Preferably, the ammonia still is vertical type screening plate tower, is divided into two sections by partition, upper section is heat resolve section, lower section
For distilling period.
Preferably, ammonia outlet and mother liquor import are arranged at heat resolve section top, and the heat resolve pars infrasegmentalis has liquid
Mixed liquor import and mixture of steam outlet, the distilling period are arranged at body outlet and mixture of steam import, the distilling period top
Steam air inlet and leakage fluid dram are arranged at bottom.
Preferably, the liquid outlet passes through preliming tank and the mixed liquor inlet communication, the mixture of steam outlet
Pass through preliming tank and the mixture of steam inlet communication.
A kind of CO using carbide slag slurry and methanol device by-product provided by the utility model2The system for producing soda ash,
Carbide slag slurry is used as the milk of lime that recycling ammonia needs in ammonia still, that is, the recycling for realizing industrial waste carbide slag is sharp again
With, reduce carbide slag treatment of wastes produced cost again, while opening a kind of new raw material sources for soda manufacture；Utilize methanol
The CO of by-product in device2Raw material of the gas as ammonial brine carbonation reaction, reduces CO in methanol device2The discharge of gas；Together
The CO of Shi Liyong carbide slag slurry and methanol device by-product2The raw material for doing soda manufacture, instead of traditional ammonia-soda process soda manufacture
Limekiln process in technique reduces the production cost of soda ash, shortens the production procedure of soda ash, reached resources circulation again
The purpose utilized.
Detailed description of the invention
Fig. 1 is a kind of CO using carbide slag slurry and methanol device by-product provided by the utility model2Produce soda ash
Process flow chart.
Fig. 2 is by the CO of by-product in methanol device2Gas is passed through the structural schematic diagram of carbonators.
Fig. 3 is the structural schematic diagram of ammonia still.
Specific embodiment
The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, reference label refers to that this is practical new
Component, technology in type, so as to the advantages of the utility model and feature is realized under appropriate circumstances can be easier to be understood.Under
The description in face is the materialization to the utility model claims, and relevant to claim other is not clearly stated
Specific implementation also belongs to the scope of the claims.
Fig. 1 shows a kind of CO using carbide slag slurry and methanol device by-product provided by the utility model2It produces pure
The process flow chart of alkali.
As shown in Figure 1, a kind of CO using carbide slag slurry and methanol device by-product provided by the utility model2It produces pure
The system of alkali, wherein for carbide slag slurry in acetylene generator, which includes: concentrator, refined salt pond, ammonia absorption tower, pressure
Contracting machine, carbonators, filter, calcining furnace and ammonia still.
The concentrator obtains solid content for carrying out thickening processing to the carbide slag slurry generated from acetylene generator
For the milk of lime of 24%-27%.It is re-refined after obtaining saturation crude brine for making crude salt be dissolved in water in the refined salt pond
As refined brine.The ammonia absorption tower is connect with the refined salt pond, for generating ammonial brine after so that the refined brine is absorbed ammonia.
The compressor is used for the CO to by-product in methanol device2Gas is passed through the carbonators after being compressed；It is described
Carbonators is connect with the ammonia absorption tower and compressor, for making ammonial brine in the carbonators and CO2Gas is carbonated
Reaction generates sodium bicarbonate suspension.
In carbonators, the ammonial brine enters in tower from the top of carbonators, and CO2Gas from the lower part of carbonators into
Enter, ammonial brine is contacted with the back flow of gas of rising, is occurred carbonation reaction (being commonly called as being carbonized), reaction equation are as follows: NaCl+NH3+CO2
+H2O=NaHCO3+NH4NaHCO is precipitated after reaching saturation in Cl3Crystal obtains NaHCO3Suspension.
The filter is connect with the carbonators, for being filtered to the sodium bicarbonate suspension, obtains carbonic acid
Hydrogen sodium filter cake and mother liquor.The calcining furnace is for carrying out the natrii bicarbonas filter cake to calcine obtained soda ash.It is right in calcining furnace
Natrii bicarbonas filter cake carries out heat resolve, and soda ash, key reaction NaHCO is made3=Na2CO3+H2O+CO2↑。
The ammonia still is connect with the filter and concentrator, for keeping the mother liquor and milk of lime anti-in ammonia still
It answers, steams ammonia.Ammonium chloride and unreacted aqua ammonia are mainly contained in the mother liquor, mother liquor is passed through ammonia still, with stone
Grey cream reacts, NH4Cl+Ca(OH)2=CaCl2+NH3↑+H2O returns to ammonia absorption tower recycling benefit with the ammonia that steam steams
With.
Ammonia-soda process soda manufacture is a kind of most commonly used soda manufacture method of current soda manufacture industrial application, is with original
Salt and quick lime CaO are primary raw material, ammonia as intermediary, and salt water is inhaled ammonia, carbonization obtains sodium bicarbonate suspension and mother
Liquid obtains soda ash product using filter calcining.
Fig. 2 is by the CO of by-product in methanol device2Gas is passed through the structural schematic diagram of carbonators.
As shown in Fig. 2, connecting two pipelines between the thickener and acetylene generator, one is used for acetylene generator
The carbide slag slurry of middle generation is transported to the thickener, and another supernatant for generating the concentrator overflow returns
It is reused to acetylene generator.
System provided by the utility model further includes ashing melting machine, and the ashing melting machine is for mixing quick lime and carbide slag slurry
It closes, is modulated into the milk of lime that solid content is 24%-27%.
Carbide slag slurry when the lime milk content generated after concentrator concentration is not achieved 24%, after concentrator is concentrated
Through pipeline into ashing melting machine, quick lime prepares solid content with carbide slag slurry hybrid reaction and is in ashing melting machine
The milk of lime of 24%-27% controls the concentration model of the milk of lime of modulation by adjusting the amount ratio of carbide slag slurry and quick lime
It encloses.
System provided by the utility model further includes steam turbine, and the steam turbine is for driving the compressor to CO2Gas
Body is compressed, and the lack of gas generated after the steam turbine acting send the ammonia still to recycle as steam.
System provided by the utility model, the calcining furnace are connect with the compressor, for will generate in calcination process
CO2Gas returns to the compressor and recycles.
System provided by the utility model, the ammonia still connect with the ammonia absorption tower, for will steam in ammonia still
Ammonia is passed through the ammonia absorption tower.
System provided by the utility model further includes calcium chloride device, and the calcium chloride device is connect with the ammonia still,
For handling the evaporated waste ammonia liquid generated in the ammonia still, calcium chloride solid is made.
Fig. 3 shows the structural schematic diagram of ammonia still.
As shown in figure 3, the ammonia still is vertical type screening plate tower 1, being divided to by partition 2 is two sections, and upper section 3 is heat resolve
Section, lower section 4 are distilling period.Ammonia outlet 5 and mother liquor import 6, the heat resolve pars infrasegmentalis are arranged at heat resolve section top
There are liquid outlet 7 and mixture of steam import 8, mixed liquor import 9 and mixture of steam outlet 10, institute are arranged at the distilling period top
Stating distilling period bottom has a steam air inlet, and 11 and leakage fluid dram 12.Meanwhile the liquid outlet 7 is mixed by preliming tank 13 with described
Liquid import 9 is closed to be connected to.The mixture of steam outlet 10 is connected to by preliming tank 13 with the mixture of steam import 8.In addition,
Milk of lime is entered by preliming tank import 14.
In the present embodiment, steam enters distilling period from steam air inlet 11, and constantly rises, and is exported by mixture of steam
10 enter heat resolve section through preliming tank 13 and mixture of steam import 8, meanwhile, mother liquor enters heat resolve from mother liquor import 6
Section, and gradually flow downward, it meets with the steam constantly risen, mother liquor is heated, and free ammonia therein is steamed, through ammonia
5 export of outlet, is input in ammonia absorption tower and recycles.Mother liquor through upper section heating is drawn from liquid outlet 7, in preliming tank 13
It after being mixed with milk of lime, is reacted under about 93 degrees Celsius, converts aqua ammonia for ammonium chloride, mixed liquor becomes distiller liquor, adjusts
Distilling period top is introduced from mixed liquor import 8 again with liquid, and gradually declines by gravity and meets with steam counter-flow, it will be in distiller liquor
Ammonia steams.Evaporated waste ammonia liquid after ammonia still process is discharged from leakage fluid dram 12, the raw material as calcium chloride processed.
In the present embodiment, carbide slag slurry enters concentrator, and solid content reaches 24%~27% after concentration, concentrator
Supernatant liquor enter acetylene generator and recycle, the carbide slag after concentration passes through pipeline to the ashing melting machine for producing soda ash
In, it is reacted in ashing melting machine with quick lime (quick lime is added when carbide slag concentration is not achieved 24%) and water, generation meets pure
Enter storage tank after the milk of lime that concentration is 24%~27% in alkali production, the preliming tank of ammonia still is then sent to, in preliming tank
The pre- hot mother liquor come with ammonia still upper section reacts at a temperature of about 93 DEG C, converts aqua ammonia for ammonium chloride, mixed liquor is known as
Distiller liquor, distiller liquor enter ammonia still lower section, ammonia are steamed into recycling in ammonia absorption tower, evaporated waste ammonia liquid is delivered to cinder field booth
Enter calcium chloride device after solarization and produces calcium chloride solid；The ammonia steamed from ammonia still enters ammonia absorption tower, in ammonia absorption tower with
The refined brine that salt refining comes is mixed and made into a certain proportion of ammonial brine, ammonial brine enter after carbonators with ammonia from coal device pair
The carbon dioxide gas precursor reactant of production generates sodium bicarbonate suspension, isolates natrii bicarbonas filter cake through filter, then through calcining furnace
Calcining and decomposing is soda ash, is packed after cooling；Ammonium chloride and unreacted hydrogen-oxygen are mainly contained in the mother liquor that filter is isolated
Change ammonia and enter ammonia still, directly contacted with steam and steam ammonia recycle utilization, because lossy in the removal process of ammonia, therefore needs
Liquefied ammonia is replenished in time.
A kind of CO using carbide slag slurry and methanol device by-product provided by the utility model2The system for producing soda ash,
Carbide slag slurry is used as the milk of lime that recycling ammonia needs in ammonia still, that is, the recycling for realizing industrial waste carbide slag is sharp again
With, reduce carbide slag treatment of wastes produced cost again, while opening a kind of new raw material sources for soda manufacture；Utilize methanol
The CO of by-product in device2Raw material of the gas as ammonial brine carbonation reaction, reduces CO in methanol device2The discharge of gas；Together
The CO of Shi Liyong carbide slag slurry and methanol device by-product2The raw material for doing soda manufacture, instead of traditional ammonia-soda process soda manufacture
Limekiln process in technique reduces the production cost of soda ash, shortens the production procedure of soda ash, reached resources circulation again
The purpose utilized.
The utility model is limited it should be noted that above-described embodiment illustrates rather than the utility model
System, and those skilled in the art can be designed alternative embodiment without departing from the scope of the appended claims.?
In claim, any reference symbol between parentheses should not be configured to limitations on claims.
Claims (10)
1. a kind of CO using carbide slag slurry and methanol device by-product2The system for producing soda ash, the carbide slag slurry come from second
In alkynes generator, which is characterized in that the system comprises: concentrator, refined salt pond, ammonia absorption tower, compressor, carbonators, filtering
Machine, calcining furnace and ammonia still,
For carrying out thickening processing to the carbide slag slurry generated from acetylene generator, obtain solid content is the concentrator
The milk of lime of 24%-27%；
It is re-refined after obtaining saturation crude brine as refined brine for making crude salt be dissolved in water in the refined salt pond；
The ammonia absorption tower is connect with the refined salt pond, for generating ammonial brine after so that the refined brine is absorbed ammonia；
The compressor is used for the CO to by-product in methanol device2Gas is passed through the carbonators after being compressed；
The carbonators is connect with the ammonia absorption tower and compressor, for making ammonial brine in the carbonators and CO2Gas carries out
Carbonation reaction generates sodium bicarbonate suspension；
The filter is connect with the carbonators, for being filtered to the sodium bicarbonate suspension, obtains sodium bicarbonate
Filter cake and mother liquor；
The calcining furnace is for carrying out the natrii bicarbonas filter cake to calcine obtained soda ash；
The ammonia still is connect with the filter and concentrator, for reacting the mother liquor and milk of lime in ammonia still,
Steam ammonia.
2. system according to claim 1, which is characterized in that connect two pipes between the concentrator and acetylene generator
Road, one for the carbide slag slurry generated in acetylene generator to be transported to the concentrator, another for will be described dense
The supernatant that close machine overflow generates is reused back to acetylene generator.
3. system according to claim 1, which is characterized in that further include ashing melting machine, the ashing melting machine is used for quick lime
It is mixed with carbide slag slurry, is modulated into the milk of lime that solid content is 24%-27%.
4. system according to claim 1, which is characterized in that further include steam turbine, the steam turbine is described for driving
Compressor is to CO2Gas is compressed, and the lack of gas generated after the steam turbine acting send the ammonia still to recycle as steam.
5. system according to claim 1, which is characterized in that the calcining furnace is connect with the compressor, for that will forge
The CO generated during burning2Gas returns to the compressor and recycles.
6. system according to claim 1, which is characterized in that the ammonia still is connect with the ammonia absorption tower, for that will steam
The ammonia steamed in ammonia tower is passed through the ammonia absorption tower.
7. system according to claim 6, which is characterized in that it further include calcium chloride device, the calcium chloride device and institute
Ammonia still connection is stated, for handling the evaporated waste ammonia liquid generated in the ammonia still, calcium chloride solid is made.
8. system according to claim 7, which is characterized in that the ammonia still is vertical type screening plate tower, is divided by partition
Two sections, upper section is heat resolve section, and lower section is distilling period.
9. system according to claim 8, which is characterized in that heat resolve section top have ammonia outlet and mother liquor into
Mouthful, the heat resolve pars infrasegmentalis has a liquid outlet and mixture of steam import, the distilling period top have mixed liquor import and
Mixture of steam outlet, steam air inlet and leakage fluid dram are arranged at the distilling period bottom.
10. system according to claim 9, which is characterized in that the liquid outlet passes through preliming tank and the mixed liquor
Inlet communication, the mixture of steam outlet pass through preliming tank and the mixture of steam inlet communication.
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| CN201920048546.2U CN209442660U (en) | 2019-01-11 | 2019-01-11 | A kind of CO using carbide slag slurry and methanol device by-product2The system for producing soda ash |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920048546.2U CN209442660U (en) | 2019-01-11 | 2019-01-11 | A kind of CO using carbide slag slurry and methanol device by-product2The system for producing soda ash |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Qinghai Salt Lake Magnesium Industry Co.,Ltd. Assignor: QINGHAI SALT LAKE INDUSTRY Co.,Ltd. Contract record no.: X2023990000996 Denomination of utility model: A system for producing soda ash using carbide slag slurry and CO produced by methanol plant by-products Granted publication date: 20190927 License type: Exclusive License Record date: 20240102 |
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