CN110040689A - A kind of big production capacity and sodium chlorite production equipment and its production method without spent acid discharge - Google Patents
A kind of big production capacity and sodium chlorite production equipment and its production method without spent acid discharge Download PDFInfo
- Publication number
- CN110040689A CN110040689A CN201910340414.1A CN201910340414A CN110040689A CN 110040689 A CN110040689 A CN 110040689A CN 201910340414 A CN201910340414 A CN 201910340414A CN 110040689 A CN110040689 A CN 110040689A
- Authority
- CN
- China
- Prior art keywords
- pipe
- chlorine dioxide
- sodium chlorite
- sodium
- generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- UKLNMMHNWFDKNT-UHFFFAOYSA-M sodium chlorite Chemical compound [Na+].[O-]Cl=O UKLNMMHNWFDKNT-UHFFFAOYSA-M 0.000 title claims abstract description 83
- 229960002218 sodium chlorite Drugs 0.000 title claims abstract description 83
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 62
- 239000002253 acid Substances 0.000 title claims abstract description 19
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims abstract description 186
- 239000004155 Chlorine dioxide Substances 0.000 claims abstract description 93
- 235000019398 chlorine dioxide Nutrition 0.000 claims abstract description 93
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 70
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000007789 gas Substances 0.000 claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 38
- 238000005273 aeration Methods 0.000 claims abstract description 37
- 238000005406 washing Methods 0.000 claims abstract description 37
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000009833 condensation Methods 0.000 claims abstract description 23
- 230000005494 condensation Effects 0.000 claims abstract description 23
- 238000002360 preparation method Methods 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 10
- 239000006227 byproduct Substances 0.000 claims abstract description 8
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 5
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 5
- 238000010521 absorption reaction Methods 0.000 claims description 56
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 42
- 238000003860 storage Methods 0.000 claims description 16
- 238000001704 evaporation Methods 0.000 claims description 11
- 230000008020 evaporation Effects 0.000 claims description 11
- 102000005393 Sodium-Potassium-Exchanging ATPase Human genes 0.000 claims description 9
- 108010006431 Sodium-Potassium-Exchanging ATPase Proteins 0.000 claims description 9
- OEMUKJZHMHTYSL-UHFFFAOYSA-N [Na].OCl=O Chemical compound [Na].OCl=O OEMUKJZHMHTYSL-UHFFFAOYSA-N 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 9
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 239000000460 chlorine Substances 0.000 claims description 8
- 239000000498 cooling water Substances 0.000 claims description 8
- 229910001882 dioxygen Inorganic materials 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 6
- 238000004090 dissolution Methods 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 229910052801 chlorine Inorganic materials 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 5
- 239000012452 mother liquor Substances 0.000 claims description 5
- 238000006479 redox reaction Methods 0.000 claims description 5
- NHYCGSASNAIGLD-UHFFFAOYSA-N Chlorine monoxide Chemical compound Cl[O] NHYCGSASNAIGLD-UHFFFAOYSA-N 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- DFGWJCZWKBGVOX-UHFFFAOYSA-N [Cl+].[O-2].[O-2].[Ti+4] Chemical compound [Cl+].[O-2].[O-2].[Ti+4] DFGWJCZWKBGVOX-UHFFFAOYSA-N 0.000 claims description 3
- 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 claims description 2
- 238000009835 boiling Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims 2
- 238000011017 operating method Methods 0.000 claims 1
- 239000004408 titanium dioxide Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 239000002910 solid waste Substances 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 6
- 239000003638 chemical reducing agent Substances 0.000 abstract description 2
- 239000007800 oxidant agent Substances 0.000 abstract description 2
- 230000001590 oxidative effect Effects 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 5
- 210000000476 body water Anatomy 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 229910001902 chlorine oxide Inorganic materials 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012263 liquid product Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 241000208202 Linaceae Species 0.000 description 1
- 235000004431 Linum usitatissimum Nutrition 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 238000004076 pulp bleaching Methods 0.000 description 1
- 239000012265 solid product Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B11/00—Oxides or oxyacids of halogens; Salts thereof
- C01B11/08—Chlorous acid
- C01B11/10—Chlorites
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of big production capacity and sodium chlorite production equipment and its production method without spent acid discharge, the device are made of chlorine dioxide generating system, sodium chlorite preparation system, condensation liquid treating system, exhaust treatment system and saltcake processing system.For this method first using hydrogen peroxide as reducing agent, sodium chlorate is oxidant, produces chlorine dioxide using generator；Then chlorine dioxide, water vapour are condensed by condenser, after condensed chlorine dioxide and hydrogen peroxide, alkaline reaction, produces sodium chlorite solution；Condensate liquid is sent into aeration tank again, chlorine dioxide enters tail gas washing tower, empties after lye and hydrogen peroxide absorb washing, anhydrous sodium sulphate is made in drying after preparing the concentrated washing of byproduct saltcake generated in chlorine dioxide.Apparatus of the present invention integrate multiple functions, and can prepare purity is high, moisture content low chlorine dioxide and the higher sodium chlorite solution of output concentration, and without solid waste and waste liquid outlet in production process.
Description
Technical field
The invention belongs to sodium chlorite preparation technical field, specifically a kind of big production capacity and the sodium chlorite without spent acid discharge
Production equipment and its production method.
Background technique
Sodium chlorite is a kind of high-efficient oxidant, is had many uses general, is mainly used for that cotton spinning, flax, paper pulp bleaching, food disappears
Poison, water process, sterilization algae removal and fish medicine manufacture etc..Sodium chlorite product has solid and two kinds of liquid, but leads in many applications
Domain all uses liquid, and main cause is because solid product risk is big, and liquid product risk is small.Liquid product is used at present
Content is generally in 20~30% (w/w), and stable at normal temperature, the general shelf-life was up to 12 months or more.
Currently, the main production method of industrial production sodium chlorite, which has, prepares chlorine dioxide production using horizontal generator
The production method of sodium chlorite.There are the directly outer pollution discharging rings of the acid waste liquid that chlorine dioxide preparation system generates for the production method
Border, sodium chlorate, sulfuric acid, byproduct saltcake in spent acid can not efficiently use, or need to configure crystallizing evaporator concentration
Waste liquid there are problems that increasing investment and operating cost；In addition, horizontal generator occupied area is relatively large, it is unable to satisfy big
The demand of production capacity chlorine dioxide preparation system.The horizontal generator chlorine dioxide preparation system list being currently known covers maximum titanium dioxide
Chlorine production capacity is 25t/d.
Therefore need to develop a kind of big production capacity, energy-saving and environment-friendly sodium chlorite production method and device.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of big production capacity, energy-saving and environment-friendly sodium chlorite production equipment and
Its production method, the device integrate chlorine dioxide generation, reaction solution evaporation and concentration, sodium chloride crystal, filtering and drying, and energy
The low chlorine dioxide of preparation purity is high, moisture content produces the higher sodium chlorite solution of concentration, single to cover chlorine dioxide
Production capacity can achieve 40t/d；And have in production process without solid waste and waste liquid outlet, it does not need to increase additionally anti-
The advantages that answering liquid evaporation, crystallization and dilute product concentration systems.
The present invention solves above-mentioned technical problem with following technical solution:
A kind of big production capacity of the present invention and the sodium chlorite production equipment without spent acid discharge, mainly by chlorine dioxide system
System, sodium chlorite preparation system, condensation liquid treating system, exhaust treatment system and saltcake processing system composition, the titanium dioxide
Chlorine generating system includes generator 1 and reboiler 2, entrance phase of the outlet at bottom of generator 1 through lower circulation pipe 12 with reboiler 2
Connect, the outlet of reboiler 2 connects to forming circulation loop through upper circular tube 13 with the entrance of generator 1, sulfuric acid pipe 21, hydrogen peroxide and
Sodium chlorate pipe 20 is respectively connected to upper circular tube 13 and lower circulation pipe 12, and circulating pump 3 is equipped on lower circulation pipe 12, generator 1
Top connects through exhaust pipe 14 with the top of condenser 4；The sodium chlorite preparation system includes absorption tower 26, cooler 30,
Absorption tower dioxygen water pipe 33 and condenser chlorine dioxide exhaust pipe 15 are respectively connected to absorption tower 26, the exhaust of condenser chlorine dioxide
The gas vent of the other end connection condenser 4 of pipe 15, the outlet at bottom on absorption tower 26 connect chlorous acid sodium pump 28, sodium chlorite
The outlet of pump 28 divides two-way, connects sodium chlorite storage tank 31 all the way, and another way connects cooler 30, and the outlet of cooler 30 simultaneously connects
Absorption tower 26 is accessed after absorption tower alkali liquor pipe 34, the top on absorption tower 26 connects offgas duct 35, is equipped with vacuum in offgas duct 35
Pump 27；The condensation liquid treating system includes aeration tank 5, condensate draining 8, and the entrance of aeration tank 5 connects cold through condensate line 16
The liquid outlet of condenser 4 is equipped with condensate pump 32 on condensate line 16, and the liquid outlet of aeration tank 5 is connected through outlet tube 25
The gas vent of condensate draining 8, aeration tank 5 connects aeration tank chlorine dioxide exhaust pipe 24；The exhaust treatment system includes tail
Gas wash tower 7, aeration tank chlorine dioxide exhaust pipe 24, offgas duct 35 and tail gas washing tower dioxygen water pipe 36 access tail gas and wash
Tower 7 is washed, the outlet at bottom of tail gas washing tower 7 connects dilute sodium chlorite pipe 37, is equipped with dilute sodium chlorite on sodium chlorite pipe 37
Pump 39, the outlet of dilute sodium chlorite pipe 37 divides two-way, accesses absorption tower 26 all the way, another way and tail gas washing tower alkali liquor pipe 38 are simultaneously
Tail gas washing tower 7 is accessed after connecing, the top exit of tail gas washing tower 7 connects exhaust fan 29；The saltcake processing system includes
The entrance of saltcake filter device 10 and drying device 11, saltcake filter device 10 connects lower circulation pipe 12 through saltcake feeder sleeve 22,
Saltcake charging pump 9 is installed, the liquid outlet of saltcake filter device 10 follows under accessing through filtrate pipe 23 on the saltcake feeder sleeve 22
The solid outlet of endless tube 12, saltcake filter device 10 connects drying device 11.
The condenser 4 is equipped with cooling water inlet pipe 18 and cooling water return pipe 19.
The bottom of the aeration tank 5 connects air blower 6 through discharge pipe 17.
The reactor that the present invention uses is vertical reactor.
The big production capacity of the present invention and the production method of the sodium chlorite production equipment use without spent acid discharge, including operate as follows
Step:
Step 1, the mixed liquor of sulfuric acid, hydrogen peroxide and sodium chlorate is sent by hair by sulfuric acid pipe, hydrogen peroxide and sodium chlorate pipe
In raw device, carry out redox reaction and generate chlorine dioxide, while by reboiler heating, the water that raw material is brought into and
The water evaporation generated is reacted, the level stability in generator is maintained, makes sodium chloride crystal；
Step 2, the chlorine dioxide being discharged at the top of generator, water vapor mixture body are sent into condenser condensation, after condensation
Chlorine dioxide body water content it is less, send to absorption tower from condenser discharge and be used to prepare sodium chlorite；
Step 3, hydrogen peroxide, lye are added in absorption tower, sodium chlorite solution is made after absorbing chlorine dioxide；And
Solution is pumped out with pump afterwards, a part of solution, which is recycled back to after absorption tower is mixed with hydrogen peroxide, lye, further absorbs chlorine dioxide,
A part is pumped to the storage of sodium chlorite storage tank；
Step 4, the condensate liquid obtained after condenser being condensed is sent to aeration tank, and removes molten two in water by aeration
Chlorine body is aoxidized, is used after the condensate liquid overflow after aeration to condensation liquid bath storage for dissolution sodium chlorate；The chlorine dioxide of abjection
Gas enters tail gas washing tower, empties after lye and hydrogen peroxide absorb washing, the dilute sodium chlorite solution's blowback washed
Absorption tower further absorbs chlorine dioxide；
Step 5, the byproduct saltcake generated in generator is extracted out through saltcake charging pump, is done after sending to filter device filtering
It is dry that anhydrous sodium sulphate is made.
In step 1, the generator interior reaction temperature control is at 70~73 DEG C, and vacuum degree control is in -85Kpa, mother liquor
Sulfuric acid concentration is 4-4.1mol/l, density of sodium chlorate 2.2-2.5mol/l, and solid content is 15-25% (v/v).
In step 2, condenser chlorine dioxide after cooling and condensate temperature control are at 40 DEG C or less.
In step 3, at 39-41 DEG C, sodium chlorite solution's concentration of preparation reaches 31% (w/w) for temperature control in absorption tower
More than.
The invention has the following advantages:
1, apparatus of the present invention integrate chlorine dioxide generation, reaction solution is concentrated by evaporation, saltcake filtration drying, do not need to increase
Additional reaction solution is added to evaporate, crystal system, no spent acid and solid waste are without outlet.
2, apparatus of the present invention can produce the low chlorine dioxide of purity is high, moisture content, to reduce into sub- chlorine
The water content of sour sodium preparation system produces the higher sodium chlorite solution of concentration, does not need to increase dilute product steaming in rear process
Send out enrichment facility.
3, the present invention is configured with tail gas washing tower, and cleaning solution reuse to absorption tower further absorbs chlorine dioxide, absorbs anti-
Answer effect good.
4, chlorine dioxide reaction device of the present invention uses vertical reactor, and relatively with horizontal generator, system footprint area is small,
Single set chlorine dioxide production capacity can achieve 40t/d.
Detailed description of the invention
Fig. 1 is the overall structure figure of a kind of big production capacity of the present invention and the sodium chlorite production equipment without spent acid discharge.
In Fig. 1: 1, generator；2, reboiler；3, circulating pump；4, condenser；5, aeration tank；6, air blower；7, tail gas is washed
Wash tower；8, condensate draining；9, saltcake charging pump 10, saltcake filter device；11, drying device；12, lower circulation pipe 13, upper circulation
Pipe；14, exhaust pipe；15, condenser chlorine dioxide exhaust pipe；16, condensate line；17, discharge pipe；18, cooling water inlet pipe；
19, cooling water return pipe；20, hydrogen peroxide and sodium chlorate pipe；21, sulfuric acid pipe；22, saltcake feeder sleeve；23, filtrate pipe；24, it is aerated
Pond chlorine dioxide exhaust pipe；25, outlet tube；26, absorption tower；27, vacuum pump；28, chlorous acid sodium pump；29, exhaust fan；30,
Cooler；31, sodium chlorite storage tank；32, condensate pump；33, absorption tower dioxygen water pipe；34, absorption tower alkali liquor pipe；35, tail gas
Pipe；36, tail gas washing tower dioxygen water pipe；37, dilute sodium chlorite pipe；38, tail gas washing tower alkali liquor pipe；39, dilute chlorous acid sodium pump.
Specific embodiment
Technical solution of the present invention is described in detail with reference to the accompanying drawings and examples, described embodiment is only
It is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
As shown in Figure 1, the big production capacity of the present invention and without spent acid discharge sodium chlorite production equipment mainly sent out by chlorine dioxide
Raw system, sodium chlorite preparation system, condensation liquid treating system, exhaust treatment system and saltcake processing system composition, described two
Chlorine monoxid generating system includes vertical generator 1 and reboiler 2, and the outlet at bottom of vertical generator 1 is through lower circulation pipe 12 and again
The entrance of boiling device 2 connects, and the outlet of reboiler 2 connects to forming circulation loop through upper circular tube 13 with the entrance of generator 1, sulfuric acid
Pipe 21 accesses upper circular tube 13, and hydrogen peroxide and sodium chlorate pipe 20 access lower circulation pipe 12, be equipped with circulating pump on lower circulation pipe 12
3, the top of generator 1 connects through exhaust pipe 14 with the top of condenser 4, and condenser 4 is equipped with cooling water inlet pipe 18 and cooling
Water return pipe 19；The sodium chlorite preparation system includes absorption tower 26, cooler 30, absorption tower dioxygen water pipe 33 and condensation
Device chlorine dioxide exhaust pipe 15 is respectively connected to absorption tower 26, and the other end of condenser chlorine dioxide exhaust pipe 15 connects condenser 4
The outlet at bottom of the exhaust outlet of lower side, absorption tower 26 connects chlorous acid sodium pump 28, and the outlet of chlorous acid sodium pump 28 divides two-way,
Connect sodium chlorite storage tank 31 all the way, another way connects cooler 30, the outlet of cooler 30 and after connecing absorption tower alkali liquor pipe 34
Absorption tower 26 is accessed, the top on absorption tower 26 connects offgas duct 35, is equipped with vacuum pump 27 in offgas duct 35；At the condensate liquid
Reason system includes aeration tank 5, condensate draining 8, and the entrance of aeration tank 5 connects the liquid outlet of condenser 4 through condensate line 16, cold
Condensate pump 32 is installed, the liquid outlet of aeration tank 5 connects condensate draining 8 through outlet tube 25, aeration tank 5 on condensate pipe 16
Gas vent connects aeration tank chlorine dioxide exhaust pipe 24；The exhaust treatment system includes tail gas washing tower 7, aeration tank dioxy
Change chlorine exhaust pipe 24, offgas duct 35 and tail gas washing tower dioxygen water pipe 36 and accesses tail gas washing tower 7, tail gas washing tower 7
Outlet at bottom connects dilute sodium chlorite pipe 37, is equipped with dilute chlorous acid sodium pump 39, dilute sodium chlorite pipe 37 on sodium chlorite pipe 37
Outlet divide two-way, access absorption tower 26 all the way, another way and tail gas washing tower alkali liquor pipe 38 simultaneously access tail gas washing tower after connecing
7, the top exit of tail gas washing tower 7 connects exhaust fan 29；The saltcake processing system includes saltcake filter device 10 and does
The entrance of dry device 11, saltcake filter device 10 connects lower circulation pipe 12 through saltcake feeder sleeve 22, pacifies on the saltcake feeder sleeve 22
Equipped with saltcake charging pump 9, the liquid outlet of saltcake filter device 10 accesses lower circulation pipe 12, saltcake filter device through filtrate pipe 23
10 solid outlet connects drying device 11.
The bottom of the aeration tank 5 connects air blower 6 through discharge pipe 17.
The higher chlorine dioxide of water content that the vertical generator that the present invention uses generates, before entering absorption tower,
Condenser condensation removal most of moisture is first passed through, the chlorine dioxide that water content is low, with high purity is obtained, to reduce entrance
Using the water of process, and then the higher sodium chlorite of concentration is prepared, does not need to increase dilute product evaporation concentration system；Condensation
Resulting water can be used for dissolving sodium chlorate, no waste water outlet after aeration removes chlorine dioxide；The byproduct saltcake generated is reacted,
Anhydrous sodium sulphate take-away is dried to after filter device filtering and concentrating, no solid waste generates.
Apparatus of the present invention are configured with for removing the aeration tank of chlorine dioxide and air blower in condensate liquid.
Apparatus of the present invention are configured with tail gas washing tower, and the tail gas separated for absorption condensation liquid and absorption tower absorb
Tail gas after chlorine dioxide.
The method of the present invention produces sodium chlorite solution, while dry awns using hydrogen peroxide, sulfuric acid, sodium chlorate, lye as raw material
Nitrate is the specific application example that 47t/d sodium chlorite (100%) is prepared using above-mentioned apparatus below at anhydrous sodium sulphate:
Embodiment 1, specific steps are as follows:
Step 1, the mixed liquor of sulfuric acid, hydrogen peroxide and sodium chlorate is sent by sulfuric acid pipe, hydrogen peroxide and sodium chlorate pipe vertical
Carry out redox reaction in formula generator and generate chlorine dioxide, at the same by reboiler heat the water for bringing raw material into
And the water evaporation that reaction generates, the level stability in generator is maintained, sodium chloride crystal is made.Control vertical generator interior reaction temperature
71 DEG C, vacuum degree -85Kpa, mother liquor sulfuric acid concentration is 4mol/l, density of sodium chlorate 2.3mol/l, solid content 20% (v/v).From
The chlorine dioxide body water content 77.2% (w/w) of generator discharge, is substantially free of chlorine, and chlorine dioxide production capacity is 35t/d.
Step 2, chlorine dioxide, the water vapor mixture body being discharged at the top of generator enter condenser condensation, condensed
Chlorine dioxide temperature is 38 DEG C, and water content 8.4% (w/w) is sent through condenser chlorine dioxide exhaust pipe to absorption tower.
Step 3, hydrogen peroxide, lye is added in absorption tower, prepares sodium chlorite solution, Ta Neiwen after absorbing chlorine dioxide
Degree control is at 41 DEG C, and then sodium chlorite solution is gone out by sodium chlorite pumping, and a part is recycled back to absorption tower and hydrogen peroxide, lye
Chlorine dioxide is further absorbed after mixing, a part is pumped to sodium chlorite storage tank, and sodium chlorite solution's concentration of preparation reaches
32.1% (w/w).
Step 4, the condensed water obtained after condensation from condenser bottom be discharged, into aeration tank in by be aerated removing be dissolved in
A small amount of chlorine dioxide in water；The chlorine dioxide of abjection enters tail gas washing tower, washes through lye and hydrogen peroxide absorption
It is emptied after washing, the dilute sodium chlorite solution's blowback absorption tower washed further absorbs chlorine dioxide；It is cold after aeration
It is used after lime set overflow to condensation liquid bath storage for dissolution sodium chlorate.
Step 5, the byproduct saltcake generated in generator, is extracted out through saltcake charging pump, is done after sending to filter device filtering
Dry take-away.
Embodiment 2, specific steps are as follows:
Step 1, the mixed liquor of sulfuric acid, hydrogen peroxide and sodium chlorate is sent by sulfuric acid pipe, hydrogen peroxide and sodium chlorate pipe vertical
Carry out redox reaction in formula generator and generate chlorine dioxide, at the same by reboiler heat the water for bringing raw material into
And the water evaporation that reaction generates, maintain the level stability in generator.Control 71.5 DEG C of vertical generator interior reaction temperature, vacuum
Degree -85Kpa, mother liquor sulfuric acid concentration are 4.05mol/l, density of sodium chlorate 2.4mol/l, solid content 23% (v/v).From generator
The chlorine dioxide body water content 77.1% (w/w) of discharge, is substantially free of chlorine, and chlorine dioxide production capacity is 35t/d.
Step 2, chlorine dioxide, the water vapor mixture body being discharged at the top of generator enter condenser condensation, condensed
Chlorine dioxide temperature is 37 DEG C, and water content 8.2% (w/w) is sent through condenser chlorine dioxide exhaust pipe to absorption tower.
Step 3, hydrogen peroxide, lye is added in absorption tower, prepares sodium chlorite solution, Ta Neiwen after absorbing chlorine dioxide
Degree control is at 40 DEG C, and then sodium chlorite solution is gone out by sodium chlorite pumping, and a part is recycled back to absorption tower and hydrogen peroxide, lye
Chlorine dioxide is further absorbed after mixing, a part is pumped to sodium chlorite storage tank, and sodium chlorite solution's concentration of preparation reaches
32.2% (w/w).
Step 4, the condensed water obtained after condensation from condenser bottom be discharged, into aeration tank in by be aerated removing be dissolved in
A small amount of chlorine dioxide in water；The chlorine dioxide of abjection enters tail gas washing tower, washes through lye and hydrogen peroxide absorption
It is emptied after washing, the dilute sodium chlorite solution's blowback absorption tower washed further absorbs chlorine dioxide；It is cold after aeration
It is used after lime set overflow to condensation liquid bath storage for dissolution sodium chlorate.
Step 5, the byproduct saltcake generated in generator, is extracted out through saltcake charging pump, is done after sending to filter device filtering
Dry take-away.
Embodiment 3, specific steps are as follows:
Step 1, the mixed liquor of sulfuric acid, hydrogen peroxide and sodium chlorate is sent by sulfuric acid pipe, hydrogen peroxide and sodium chlorate pipe vertical
Carry out redox reaction in formula generator and generate chlorine dioxide, at the same by reboiler heat the water for bringing raw material into
And the water evaporation that reaction generates, maintain the level stability in generator.Control 72.5 DEG C of vertical generator interior reaction temperature, vacuum
Degree -85Kpa, mother liquor sulfuric acid concentration are 4.1mol/l, density of sodium chlorate 2.5mol/l, solid content 25% (v/v).It is arranged from generator
Chlorine dioxide body water content 77.3% (w/w) out, is substantially free of chlorine, and chlorine dioxide production capacity is 35t/d.
Step 2, chlorine dioxide, the water vapor mixture body being discharged at the top of generator enter condenser condensation, condensed
Chlorine dioxide temperature is 36 DEG C, and water content 8.1% (w/w) is sent through condenser chlorine dioxide exhaust pipe to absorption tower.
Step 3, hydrogen peroxide, lye is added in absorption tower, prepares sodium chlorite solution, Ta Neiwen after absorbing chlorine dioxide
Degree control is at 39 DEG C, and then sodium chlorite solution is gone out by sodium chlorite pumping, and a part is recycled back to absorption tower and hydrogen peroxide, lye
Chlorine dioxide is further absorbed after mixing, a part is pumped to sodium chlorite storage tank, and sodium chlorite solution's concentration of preparation reaches
32.25% (w/w).
Step 4, the condensed water obtained after condensation from condenser bottom be discharged, into aeration tank in by be aerated removing be dissolved in
A small amount of chlorine dioxide in water；The chlorine dioxide of abjection enters tail gas washing tower, washes through lye and hydrogen peroxide absorption
It is emptied after washing, the dilute sodium chlorite solution's blowback absorption tower washed further absorbs chlorine dioxide；It is cold after aeration
It is used after lime set overflow to condensation liquid bath storage for dissolution sodium chlorate.
Step 5, the byproduct saltcake generated in generator, is extracted out through saltcake charging pump, is done after sending to filter device filtering
Dry take-away.
The present invention, as reducing agent, produces the chlorine dioxide containing a large amount of water vapours using vertical generator using hydrogen peroxide
Body obtains the chlorine dioxide that water content is lower than 9% (w/w), after can reducing after then condensing most of steam with condenser
The inflow of continuous process, sodium chlorite solution's concentration of preparation can reach 31% (w/w) or more.Condensed condensate liquid removing two
Sodium chlorate dissolution water is done in reuse after chlorine monoxid；The chlorine dioxide of abjection enters tail gas washing tower, inhales through lye and hydrogen peroxide
It is emptied after receiving washing, the dilute sodium chlorite solution's blowback absorption tower washed further absorbs chlorine dioxide, and system is inhaled
It is good to receive reaction effect.Apparatus of the present invention integrate chlorine dioxide generation, reaction solution is concentrated by evaporation, saltcake filtration drying, can make
The low chlorine dioxide of standby purity is high, moisture content produces the higher sodium chlorite solution of concentration, and nothing in production process
Solid waste and waste liquid outlet do not need to increase additional reaction solution evaporation, crystallization and dilute product concentration systems.
The entire production process of the present invention is generated without solid waste and waste liquid.
Having used specific embodiment above, the present invention is described in detail, although on the basis of the present invention, for
Engineering construction need, a specific embodiment of the invention can be made some modifications or improvements, but to those skilled in the art and
Speech is obviously, does not make the modification made under the premise of creative work, be shall fall within the protection scope of the present invention.
Claims (8)
1. a kind of big production capacity and the sodium chlorite production equipment without spent acid discharge, which is characterized in that it is mainly sent out by chlorine dioxide
Raw system, sodium chlorite preparation system, condensation liquid treating system, exhaust treatment system and saltcake processing system composition, described two
Chlorine monoxid generating system includes generator (1) and reboiler (2), and the outlet at bottom of generator (1) is through lower circulation pipe (12) and again
The entrance of boiling device (2) connects, and the outlet of reboiler (2) connects to forming circulation through upper circular tube (13) with the entrance of generator (1)
Circuit, sulfuric acid pipe (21), hydrogen peroxide and sodium chlorate pipe (20) are respectively connected to upper circular tube (13) and lower circulation pipe (12), lower circulation
It is equipped with circulating pump (3) on pipe (12), the top of generator (1) at the top of exhaust pipe (14) and condenser (4) through connecting；It is described
Sodium chlorite preparation system includes absorption tower (26), cooler (30), absorption tower dioxygen water pipe (33) and condenser titanium dioxide
Chlorine exhaust pipe (15) is respectively connected to absorption tower (26), and the other end of condenser chlorine dioxide exhaust pipe (15) connects condenser (4)
Gas vent, the outlet at bottom of absorption tower (26) connects chlorous acid sodium pump (28), and the outlet of chlorous acid sodium pump (28) divides two-way,
Sodium chlorite storage tank (31) are connected all the way, another way connects cooler (30), and the outlet of cooler (30) simultaneously connects absorption tower lye
It manages (34) and accesses absorption tower (26) afterwards, the top of absorption tower (26) connects offgas duct (35), and offgas duct is equipped with vacuum on (35)
It pumps (27)；The condensation liquid treating system includes aeration tank (5), condensate draining (8), and the entrance of aeration tank (5) is through condensate line
(16) liquid outlet of condenser (4) is connected, is equipped with condensate pump (32) on condensate line (16), the liquid of aeration tank (5)
Outlet connects condensate draining (8) through outlet tube (25), and the gas vent of aeration tank (5) connects aeration tank chlorine dioxide exhaust pipe
(24)；The exhaust treatment system includes tail gas washing tower (7), aeration tank chlorine dioxide exhaust pipe (24), offgas duct (35) with
And tail gas washing tower dioxygen water pipe (36) accesses tail gas washing tower (7), the dilute sub- chlorine of the outlet at bottom connection of tail gas washing tower (7)
Sour sodium pipe (37) is equipped with dilute chlorous acid sodium pump (39) on sodium chlorite pipe (37), and the outlet of dilute sodium chlorite pipe (37) is divided to two
Absorption tower (26) are accessed all the way in road, and tail gas washing tower (7) are simultaneously accessed after connecing in another way and tail gas washing tower alkali liquor pipe (38), tail
The top exit of gas wash tower (7) connects exhaust fan (29)；The saltcake processing system include saltcake filter device (10) and
The entrance of drying device (11), saltcake filter device (10) connects lower circulation pipe (12) through saltcake feeder sleeve (22), which supplies
It is equipped in expects pipe (22) saltcake charging pump (9), the liquid outlet of saltcake filter device (10) under filtrate pipe (23) access through following
The solid outlet of endless tube (12), saltcake filter device (10) connects drying device (11).
2. big production capacity and the sodium chlorite production equipment without spent acid discharge according to claim 1, which is characterized in that described cold
Condenser (4) is equipped with cooling water inlet pipe (18) and cooling water return pipe (19).
3. big production capacity according to claim 1 or claim 2 and the sodium chlorite production equipment without spent acid discharge, which is characterized in that institute
The bottom for stating aeration tank (5) connects air blower (6) through discharge pipe (17).
4. big production capacity according to claim 1 or claim 2 and the sodium chlorite production equipment without spent acid discharge, which is characterized in that institute
Stating generator (1) is vertical generator.
5. the production method that big production capacity and the sodium chlorite production equipment without spent acid discharge use according to claim 1,
It is characterized in that, including following operating procedure:
Step 1, the mixed liquor of sulfuric acid, hydrogen peroxide and sodium chlorate is sent by generator by sulfuric acid pipe, hydrogen peroxide and sodium chlorate pipe
It is interior, it carries out redox reaction and generates chlorine dioxide, while being heated by reboiler, the water that raw material is brought into and reaction
The water evaporation of generation maintains the level stability in generator, makes sodium chloride crystal；
Step 2, the chlorine dioxide being discharged at the top of generator, water vapor mixture body are sent into condenser and condensed, condensed two
Chlorine monoxid gas water content is less, send from condenser discharge to absorption tower and is used to prepare sodium chlorite；
Step 3, hydrogen peroxide, lye are added in absorption tower, sodium chlorite solution is made after absorbing chlorine dioxide；Then use
Pump pumps out solution, and a part of solution, which is recycled back to after absorption tower is mixed with hydrogen peroxide, lye, further absorbs chlorine dioxide, and one
Divide and is pumped to the storage of sodium chlorite storage tank；
Step 4, the condensate liquid obtained after condenser being condensed is sent to aeration tank, and removes molten titanium dioxide in water by aeration
Chlorine body uses after the condensate liquid overflow to condensation liquid bath storage after aeration for dissolution sodium chlorate；The chlorine dioxide of abjection
Into tail gas washing tower, emptied after lye and hydrogen peroxide absorb washing, the dilute sodium chlorite solution's blowback washed absorbs
Tower further absorbs chlorine dioxide；
Step 5, the byproduct saltcake generated in generator is extracted out through saltcake charging pump, dry system after sending to filter device filtering
At anhydrous sodium sulphate.
6. the production method that big production capacity and the sodium chlorite production equipment without spent acid discharge use according to claim 5,
It is characterized in that, in step 1, the generator interior reaction temperature control is at 70~73 DEG C, and vacuum degree control is in -85Kpa, mother liquor
Sulfuric acid concentration is 4-4.1mol/l, density of sodium chlorate 2.2-2.5mol/l, and solid content is 15-25% (v/v).
7. the production method that big production capacity and the sodium chlorite production equipment without spent acid discharge use according to claim 5,
It is characterized in that, in step 2, condenser chlorine dioxide after cooling and condensate temperature control are at 40 DEG C or less.
8. the production method that big production capacity and the sodium chlorite production equipment without spent acid discharge use according to claim 5,
It is characterized in that, in step 3, at 39-41 DEG C, sodium chlorite solution's concentration of preparation reaches 31% (w/ for temperature control in absorption tower
W) more than.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910340414.1A CN110040689A (en) | 2019-04-25 | 2019-04-25 | A kind of big production capacity and sodium chlorite production equipment and its production method without spent acid discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910340414.1A CN110040689A (en) | 2019-04-25 | 2019-04-25 | A kind of big production capacity and sodium chlorite production equipment and its production method without spent acid discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110040689A true CN110040689A (en) | 2019-07-23 |
Family
ID=67279472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910340414.1A Pending CN110040689A (en) | 2019-04-25 | 2019-04-25 | A kind of big production capacity and sodium chlorite production equipment and its production method without spent acid discharge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110040689A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115367709A (en) * | 2021-10-09 | 2022-11-22 | 四川锦美绿源环保科技有限公司 | Waste acid-free sodium chlorite production process and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2331569A1 (en) * | 1972-06-29 | 1974-01-17 | Oceanic Process Corp | METHOD OF TREATMENT OF CONSUMED ACID LIQUID |
| CN105439096A (en) * | 2015-12-02 | 2016-03-30 | 广西大学 | Environment-friendly sodium chlorite preparing method and device by means of hydrogen peroxide method chlorine dioxide technology |
| CA2946017A1 (en) * | 2016-10-14 | 2017-01-26 | Guangxi Bossco Environmental Protection Technology | A method for hydrogen peroxide based chlorine dioxide production process with a vertical generator |
| CN108439341A (en) * | 2018-05-18 | 2018-08-24 | 广西大学 | A kind of method and device producing chlorine dioxide with high purity gas |
| CN208454495U (en) * | 2018-05-18 | 2019-02-01 | 广西大学 | A kind of device producing chlorine dioxide with high purity gas |
-
2019
- 2019-04-25 CN CN201910340414.1A patent/CN110040689A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2331569A1 (en) * | 1972-06-29 | 1974-01-17 | Oceanic Process Corp | METHOD OF TREATMENT OF CONSUMED ACID LIQUID |
| CN105439096A (en) * | 2015-12-02 | 2016-03-30 | 广西大学 | Environment-friendly sodium chlorite preparing method and device by means of hydrogen peroxide method chlorine dioxide technology |
| CA2946017A1 (en) * | 2016-10-14 | 2017-01-26 | Guangxi Bossco Environmental Protection Technology | A method for hydrogen peroxide based chlorine dioxide production process with a vertical generator |
| CN108439341A (en) * | 2018-05-18 | 2018-08-24 | 广西大学 | A kind of method and device producing chlorine dioxide with high purity gas |
| CN208454495U (en) * | 2018-05-18 | 2019-02-01 | 广西大学 | A kind of device producing chlorine dioxide with high purity gas |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115367709A (en) * | 2021-10-09 | 2022-11-22 | 四川锦美绿源环保科技有限公司 | Waste acid-free sodium chlorite production process and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102329275B (en) | Preparation methods of trichloroisocyanuric acid and sodium dichloro isocyanurate | |
| US10266406B1 (en) | Producing high-purity chlorine dioxide gas | |
| CN104261350B (en) | A kind of dioxide peroxide preparation method not producing solid substance | |
| CN105439096B (en) | Environment-friendly type peroxide passivation chlorine dioxide technique prepares the method and apparatus of sodium chlorite | |
| CN110040689A (en) | A kind of big production capacity and sodium chlorite production equipment and its production method without spent acid discharge | |
| CN105439091B (en) | The peroxide passivation chlorine dioxide preparation method and equipment of environment-friendly type | |
| CN1128095C (en) | Large high-purity chlorine dioxide generator and its production process | |
| CN205760554U (en) | A kind of chloride exhaust gas processing device | |
| CN208995416U (en) | A kind of tetrabromobisphenol A process units | |
| CN105254469B (en) | A kind of process for cleanly preparing of ethyl chloride and device | |
| CN107686204A (en) | A kind of method of heat integration during processing viscose rayon acid waste water | |
| CN209957374U (en) | Sodium chlorite production equipment with high capacity and no waste acid discharge | |
| CN215462095U (en) | Alkali adding device for wool aldehyde refining | |
| CN217473544U (en) | Potassium hydrogen peroxymonosulfate composite salt production device based on jet flow reactor | |
| CN101245565B (en) | Zero discharge clean method for producing corn cane man-made fiber pulp, xylitol | |
| CN107721879A (en) | A kind of liquid caustic soda methyl alcohol mixed liquor is used for the method for the free ethanamidine of ethenylamidine hydrochloride | |
| CN209957373U (en) | Equipment for producing sodium chlorite based on chloric acid and hydrogen peroxide | |
| CN110015638A (en) | A kind of equipment and its production method based on chloric acid and Hydrogen Peroxide Production sodium chlorite | |
| CN102964237A (en) | Method and equipment for preparing copper acetate by using nitric acid catalytic oxidation method | |
| CN207298383U (en) | Hydrochloric acid circulates tank systems | |
| CN110143713A (en) | A kind of spent lye circulation utilization method | |
| CN215559986U (en) | Trichloroisocyanuric acid production system | |
| CN204981135U (en) | No spent acid discharges dioxygen water law chlorine dioxide generator | |
| CN107382660A (en) | Gas phase methods of eliminating acidity in a kind of monochlorodifluoromethane production | |
| CN216549632U (en) | Chlorine dioxide generator and generation system comprising same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190723 |