CN114797416A - Method for ultralow emission treatment of sludge incineration tail gas - Google Patents
Method for ultralow emission treatment of sludge incineration tail gas Download PDFInfo
- Publication number
- CN114797416A CN114797416A CN202210408675.4A CN202210408675A CN114797416A CN 114797416 A CN114797416 A CN 114797416A CN 202210408675 A CN202210408675 A CN 202210408675A CN 114797416 A CN114797416 A CN 114797416A
- Authority
- CN
- China
- Prior art keywords
- tail gas
- sludge incineration
- purification
- emission treatment
- gas
- 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
- 239000010802 sludge Substances 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 120
- 238000000746 purification Methods 0.000 claims abstract description 46
- 239000002253 acid Substances 0.000 claims abstract description 19
- 239000000428 dust Substances 0.000 claims abstract description 17
- 239000007921 spray Substances 0.000 claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical group O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 claims abstract description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 6
- 230000023556 desulfurization Effects 0.000 claims abstract description 6
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims abstract description 6
- 239000003610 charcoal Substances 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 27
- 239000003814 drug Substances 0.000 claims description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 17
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 15
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 15
- 241001330002 Bambuseae Species 0.000 claims description 15
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 15
- 229940037003 alum Drugs 0.000 claims description 15
- 239000011425 bamboo Substances 0.000 claims description 15
- 239000002156 adsorbate Substances 0.000 claims description 14
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 12
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 12
- 239000004571 lime Substances 0.000 claims description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 9
- 238000005507 spraying Methods 0.000 claims description 8
- 235000013162 Cocos nucifera Nutrition 0.000 claims description 7
- 244000060011 Cocos nucifera Species 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 claims description 6
- 239000008213 purified water Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 239000000920 calcium hydroxide Substances 0.000 claims description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 3
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 claims description 3
- 239000011812 mixed powder Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- AOMUHOFOVNGZAN-UHFFFAOYSA-N N,N-bis(2-hydroxyethyl)dodecanamide Chemical compound CCCCCCCCCCCC(=O)N(CCO)CCO AOMUHOFOVNGZAN-UHFFFAOYSA-N 0.000 claims description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 229910052793 cadmium Inorganic materials 0.000 description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 235000019864 coconut oil Nutrition 0.000 description 3
- 239000003240 coconut oil Substances 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- FPVGTPBMTFTMRT-NSKUCRDLSA-L fast yellow Chemical compound [Na+].[Na+].C1=C(S([O-])(=O)=O)C(N)=CC=C1\N=N\C1=CC=C(S([O-])(=O)=O)C=C1 FPVGTPBMTFTMRT-NSKUCRDLSA-L 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/44—Organic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/58—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/64—Heavy metals or compounds thereof, e.g. mercury
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3042—Use of binding agents; addition of materials ameliorating the mechanical properties of the produced sorbent
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a method for ultralow emission treatment of sludge incineration tail gas, which comprises the following steps: s1, pretreatment of tail gas: during earlier utilized produced tail gas when fan with sludge incineration carries the spray column through the tuber pipe, start the inside sprinkling mechanism of spray column simultaneously for fully contact between spray solution and the tail gas, make the dust in the tail gas can deposit in the bottom of spray column inner chamber, the one-level purification of S2, tail gas: conveying the sprayed tail gas into a primary purification box to enable the tail gas to be in contact with a purification object in the primary purification box; according to the method for ultralow emission treatment of the sludge incineration tail gas, through the setting of the pretreatment link, not only can dust fall treatment be carried out on most of dust in the tail gas, but also decomposition of sulfur dioxide, hydrogen chloride and acid gas in the tail gas is facilitated, and through the setting of the purification link, desulfurization and denitrification treatment can be effectively carried out on the tail gas and the residual dust.
Description
Technical Field
The invention relates to the technical field of tail gas treatment, in particular to a method for ultralow emission treatment of sludge incineration tail gas.
Background
Sludge incineration is a process for sludge treatment, which utilizes an incinerator to heat and dry dewatered sludge, then oxidizes organic matters in the sludge at high temperature to make the sludge become a small amount of ash, and a reduction, stabilization and harmless treatment method for sludge post-treatment can completely remove moisture and organic matters in the sludge and kill pathogens; however, most of the existing sludge incineration tail gas is inconvenient to effectively filter and purify dust, peculiar smell and harmful molecules in the tail gas in the treatment process, and the emission of the tail gas is difficult to meet the standard, so that inconvenience is brought to the emission of the sludge incineration tail gas.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects brought forward by the background technology, the invention provides a method for treating sludge incineration tail gas with ultralow emission, and solves the problems brought forward by the background technology.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a method for ultralow emission treatment of sludge incineration tail gas comprises the following steps:
s1, pretreatment of tail gas: firstly, tail gas generated during sludge incineration is conveyed into a spray tower through an air pipe by using a fan, and meanwhile, a spraying mechanism in the spray tower is started, so that spraying liquid is fully contacted with the tail gas, and dust in the tail gas is precipitated at the bottom of an inner cavity of the spray tower;
s2, primary purification of tail gas: conveying the sprayed tail gas into a primary purification box to enable the tail gas to be in contact with a purification object in the primary purification box;
s3, secondary purification of tail gas: feeding the tail gas subjected to primary purification into a secondary purification box, enabling the tail gas to be in contact with mixed liquid medicine in the secondary purification box, and respectively stirring and heating the mixed liquid medicine by using a stirring mechanism and a heating mechanism to promote molecules in the tail gas to fully react with molecules of the mixed liquid medicine;
s4, three-stage purification of tail gas: feeding the tail gas after the second-stage purification into a third-stage purification box, so that the tail gas is fully contacted with adsorbates in the third-stage purification box;
s5, cooling the tail gas: after the tertiary purification of tail gas and when needing to discharge, can set up the water-cooling tank in the outside of delivery pipe for when tail gas flows in the delivery pipe, can pass through the delivery pipe with the heat energy in the tail gas and transmit to the inside water of water-cooling tank, make the water heat-up become hot water, and the tail gas after the cooling flows from the delivery pipe again.
Preferably, in step S1, the spray liquid is an alkaline emulsion for decomposing sulfur dioxide, hydrogen chloride and acid gas, thereby controlling the generation of dioxin.
Preferably, in step S2, the purifiers are slaked lime and ammonia gas, and are used for performing desulfurization and denitrification treatment on the tail gas and the residual dust.
Preferably, in step S3, the stirring time of the mixed chemical solution is thirty minutes, and the temperature range of the mixed chemical solution is thirty to forty degrees celsius.
Preferably, in step S3, the mixed chemical solution is formed by mixing lime, alum, a yellow acid, and coco diethanolamide.
Preferably, the weight ratio of the mixed liquid medicine is as follows: 3 parts of lime, 0.2 part of alum, 0.15 part of xanthic acid and 0.5 part of coconut diethanolamide.
Preferably, the method for preparing the mixed liquid medicine comprises the following steps:
(1) firstly, adding a proper amount of purified water into a mixing box, slowly adding weighed lime into the mixing box, and stirring to ensure that the lime is completely mixed with the purified water;
(2) slowly adding alum into the solution prepared in the step (1) under the condition of continuous stirring, so that the alum is fully mixed with the solution;
(3) after the alum is melted, sequentially adding the xanthic acid and the coconut diethanolamide into the solution prepared in the step (2) slowly while stirring, so that the xanthic acid and the coconut diethanolamide are fused with the solution, and thus, the mixed liquid medicine can be prepared.
Preferably, in step S4, the adsorbate is formed by mixing charcoal, bamboo charcoal and activated carbon, and is used for adsorbing and purifying harmful or off-flavor gases in the exhaust gas.
Preferably, the preparation method of the adsorbate comprises the following steps:
(1) firstly, respectively weighing proper amounts of charcoal, bamboo charcoal and active carbon raw materials, and sequentially crushing the charcoal, the bamboo charcoal and the active carbon raw materials by using a pulverizer;
(2) sequentially adding the crushed charcoal, the bamboo charcoal and the activated carbon powder into a stirring box, fully mixing the crushed charcoal, the bamboo charcoal and the activated carbon powder, and slowly adding a proper amount of adhesive after mixing to enable the mixed powder to be adhered together;
(3) and (3) taking out the mixture obtained in the step (2), and putting the mixture into a mold for pressing, so that the adsorbate can be prepared.
Preferably, in step S5, the discharge pipe is spiral inside the water cooling tank, and the hot water can be used for saving energy.
(III) advantageous effects
Compared with the prior art, the invention provides a method for treating sludge incineration tail gas with ultralow emission, which has the following beneficial effects:
this method of sludge incineration tail gas minimum discharge processing, through setting up the preliminary treatment link, not only can carry out the dust fall to most dust in the tail gas and handle, and also be convenient for decompose dioxygen sulphur and hydrogen chloride and acid gas in the tail gas, and through setting up the cubic and purifying the link, can not only carry out desulfurization denitration treatment to tail gas and remaining dust, and can effectively decompose the ammonia, nitrogen, hydrogen, chlorine and cadmium, lead, harmful substance such as mercury and dioxin, and adsorb the purification to harmful or peculiar smell gas in the tail gas, thereby make the emission of tail gas can accord with the standard, simultaneously through setting up the cooling treatment link, can recycle the heat energy in the tail gas, thereby the energy has been practiced thrift.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A method for ultralow emission treatment of sludge incineration tail gas comprises the following steps:
s1, pretreatment of tail gas: firstly, tail gas generated during sludge incineration is conveyed into a spray tower through an air pipe by a fan, and meanwhile, a spraying mechanism inside the spray tower is started, so that spraying liquid is fully contacted with the tail gas, dust in the tail gas is precipitated at the bottom of an inner cavity of the spray tower, the spraying liquid is alkaline emulsion and is used for decomposing sulfur dioxide, hydrogen chloride and acid gas, and generation of dioxin is controlled;
s2, primary purification of tail gas: conveying the sprayed tail gas into a primary purification box to enable the tail gas to be in contact with a purification object in the primary purification box, wherein the purification object is slaked lime and ammonia gas and is used for carrying out desulfurization and denitrification treatment on the tail gas and residual dust;
s3, secondary purification of tail gas: send into the tail gas after the one-level purification to the second grade purifying box in, make tail gas and the inside mixed liquid medicine of second grade purifying box contact, and utilize rabbling mechanism and heating mechanism to stir and heat up mixed liquid medicine respectively, the churning time of mixed liquid medicine is thirty minutes, and the temperature range of mixed liquid medicine is thirty degrees centigrade to forty degrees centigrade, can fully react between the molecule in the messenger tail gas and the mixed liquid medicine molecule, mixed liquid medicine comprises lime, alum, xanthic acid and the mixture of coconut oil acid diethanolamide, and the weight ratio of mixed liquid medicine is: 3 parts of lime, 0.2 part of alum, 0.15 part of xanthic acid and 0.5 part of coconut diethanolamide, and the preparation method of the mixed liquid medicine comprises the following steps: firstly, adding a proper amount of purified water into a mixing box, slowly adding weighed lime into the mixing box, stirring to ensure that the lime is completely fused with the purified water, then slowly adding alum into the prepared solution under the condition of continuous stirring to ensure that the alum is fully mixed with the solution, and finally, after the alum is melted, slowly and sequentially adding the xanthic acid and the coconut oil acid diethanolamide into the prepared solution while stirring to ensure that the xanthic acid and the coconut oil acid diethanolamide are fused with the solution, so that a mixed liquid medicine can be prepared, harmful substances such as ammonia, nitrogen, hydrogen, chlorine, cadmium, lead, mercury, dioxin and the like can be effectively decomposed, and the blackness of tail gas is digested;
s4, three-stage purification of tail gas: the tail gas after the second-stage purification is sent into a third-stage purification box, so that the tail gas is in full contact with adsorbates inside the third-stage purification box, the adsorbates are formed by mixing charcoal, bamboo charcoal and activated carbon, the adsorbates are used for adsorbing and purifying harmful or peculiar smell gas in the tail gas, and the preparation method of the adsorbates comprises the following steps: firstly, respectively weighing proper amounts of charcoal, bamboo charcoal and activated carbon raw materials, sequentially crushing the charcoal, bamboo charcoal and activated carbon raw materials by using a pulverizer, sequentially adding the crushed charcoal, bamboo charcoal and activated carbon powder into a stirring box, fully mixing the charcoal, bamboo charcoal and activated carbon powder, slowly adding a proper amount of adhesive after mixing to enable the mixed powder to be adhered together, and finally taking out the mixture and putting the mixture into a mold for pressing to prepare an adsorbate;
s5, cooling the tail gas: after the tertiary purification of tail gas and when needing to discharge, can set up the water-cooling tank in the outside of delivery pipe for when tail gas flows in the delivery pipe, can pass through the delivery pipe in heat energy in the tail gas transmits to the inside water of water-cooling tank, make the water heat-up become hot water, and the tail gas after the cooling flows from the delivery pipe again, and the delivery pipe is the heliciform in the inside of water-cooling tank, and hot water can carry out follow-up utilization, is used for the energy saving.
The invention has the beneficial effects that: through setting up the preliminary treatment link, not only can carry out the dust fall to most dust in the tail gas and handle, and also be convenient for decompose dioxygen sulphur and hydrogen chloride and acid gas in the tail gas, and through setting up the cubic purification link, can not only carry out desulfurization and denitration treatment to tail gas and remaining dust, and can effectively decompose ammonia, nitrogen, hydrogen, chlorine and cadmium, lead, harmful substance such as mercury and dioxin, and adsorb the purification to harmful or peculiar smell gas in the tail gas, thereby make the emission of tail gas can accord with the standard, simultaneously through setting up the cooling treatment link, can recycle the heat energy in the tail gas, thereby the energy has been practiced thrift.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The method for ultralow-emission treatment of sludge incineration tail gas is characterized by comprising the following steps of:
s1, pretreatment of tail gas: firstly, tail gas generated during sludge incineration is conveyed into a spray tower through an air pipe by using a fan, and meanwhile, a spraying mechanism in the spray tower is started, so that spraying liquid is fully contacted with the tail gas, and dust in the tail gas is precipitated at the bottom of an inner cavity of the spray tower;
s2, primary purification of tail gas: conveying the sprayed tail gas into a primary purification box to enable the tail gas to be in contact with a purification object in the primary purification box;
s3, secondary purification of tail gas: feeding the tail gas subjected to primary purification into a secondary purification box, enabling the tail gas to be in contact with mixed liquid medicine in the secondary purification box, and respectively stirring and heating the mixed liquid medicine by using a stirring mechanism and a heating mechanism to promote molecules in the tail gas to fully react with molecules of the mixed liquid medicine;
s4, three-stage purification of tail gas: feeding the tail gas after the second-stage purification into a third-stage purification box, so that the tail gas is fully contacted with adsorbates in the third-stage purification box;
s5, cooling the tail gas: after the tertiary purification of tail gas and when needing to discharge, can set up the water-cooling tank in the outside of delivery pipe for when tail gas flows in the delivery pipe, can pass through the delivery pipe with the heat energy in the tail gas and transmit to the inside water of water-cooling tank, make the water heat-up become hot water, and the tail gas after the cooling flows from the delivery pipe again.
2. The method for ultra-low emission treatment of sludge incineration tail gas as claimed in claim 1, wherein in step S1, the spraying liquid is alkaline emulsion for decomposing sulfur dioxide, hydrogen chloride and acid gas, thereby controlling the generation of dioxin.
3. The method for ultra-low emission treatment of sludge incineration tail gas as claimed in claim 1, wherein in step S2, the purifiers are slaked lime and ammonia gas for desulfurization and denitrification treatment of tail gas and residual dust.
4. The method for ultra-low emission treatment of sludge incineration tail gas as claimed in claim 1, wherein in step S3, the stirring time of the mixed liquor is thirty minutes, and the temperature range of the mixed liquor is thirty to forty degrees celsius.
5. The method for ultra-low emission treatment of sludge incineration exhaust gas as claimed in claim 1, wherein in step S3, the mixed liquid medicine is formed by mixing lime, alum, a sulfonic acid and coco diethanolamide.
6. The method for ultralow-emission treatment of sludge incineration tail gas as claimed in claim 5, wherein the weight ratio of the mixed liquid medicine is as follows: 3 parts of lime, 0.2 part of alum, 0.15 part of xanthic acid and 0.5 part of coconut diethanolamide.
7. The method for ultralow-emission treatment of sludge incineration tail gas as claimed in claim 5, wherein the preparation method of the mixed liquor comprises the following steps:
(1) firstly, adding a proper amount of purified water into a mixing box, slowly adding weighed lime into the mixing box, and stirring to ensure that the lime is completely mixed with the purified water;
(2) slowly adding alum into the solution prepared in the step (1) under the condition of continuous stirring, so that the alum is fully mixed with the solution;
(3) after the alum is melted, sequentially adding the xanthic acid and the coconut diethanolamide into the solution prepared in the step (2) slowly while stirring, so that the xanthic acid and the coconut diethanolamide are fused with the solution, and thus, the mixed liquid medicine can be prepared.
8. The method of claim 1, wherein in step S4, the adsorbate is formed by mixing charcoal, bamboo charcoal and activated carbon, and the adsorbate is used for adsorbing and purifying harmful or odor gas in the tail gas.
9. The method for ultralow emission treatment of sludge incineration tail gas as claimed in claim 8, wherein the preparation method of the adsorbate comprises the following steps:
(1) firstly, respectively weighing proper amounts of charcoal, bamboo charcoal and active carbon raw materials, and sequentially crushing the charcoal, the bamboo charcoal and the active carbon raw materials by using a pulverizer;
(2) sequentially adding the crushed charcoal, the bamboo charcoal and the activated carbon powder into a stirring box, fully mixing the crushed charcoal, the bamboo charcoal and the activated carbon powder, and slowly adding a proper amount of adhesive after mixing to enable the mixed powder to be adhered together;
(3) and (3) taking out the mixture obtained in the step (2), and putting the mixture into a mold for pressing, so that the adsorbate can be prepared.
10. The method for ultra-low emission treatment of sludge incineration tail gas as claimed in claim 1, wherein in step S5, the discharge pipe is spiral inside the water cooling tank, and the hot water can be used for saving energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210408675.4A CN114797416A (en) | 2022-04-19 | 2022-04-19 | Method for ultralow emission treatment of sludge incineration tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210408675.4A CN114797416A (en) | 2022-04-19 | 2022-04-19 | Method for ultralow emission treatment of sludge incineration tail gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114797416A true CN114797416A (en) | 2022-07-29 |
Family
ID=82506052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210408675.4A Pending CN114797416A (en) | 2022-04-19 | 2022-04-19 | Method for ultralow emission treatment of sludge incineration tail gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114797416A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102949920A (en) * | 2012-10-30 | 2013-03-06 | 湘潭闯创环保科技有限公司 | Waste incineration tail gas emission purification treatment process and special apparatus thereof |
| WO2015185000A1 (en) * | 2014-06-05 | 2015-12-10 | 魏雄辉 | Process and device for desulphurization and denitration of flue gas |
| CN206444401U (en) * | 2017-02-17 | 2017-08-29 | 重庆科蓝环保实业有限公司 | A kind of flying dust flue gas combination purification system for burning city domestic garbage |
| CN107983126A (en) * | 2018-01-22 | 2018-05-04 | 天津市美好生活科技有限公司 | Incineration flue gas minimum discharge purifying treatment method and its processing system |
-
2022
- 2022-04-19 CN CN202210408675.4A patent/CN114797416A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102949920A (en) * | 2012-10-30 | 2013-03-06 | 湘潭闯创环保科技有限公司 | Waste incineration tail gas emission purification treatment process and special apparatus thereof |
| WO2015185000A1 (en) * | 2014-06-05 | 2015-12-10 | 魏雄辉 | Process and device for desulphurization and denitration of flue gas |
| CN206444401U (en) * | 2017-02-17 | 2017-08-29 | 重庆科蓝环保实业有限公司 | A kind of flying dust flue gas combination purification system for burning city domestic garbage |
| CN107983126A (en) * | 2018-01-22 | 2018-05-04 | 天津市美好生活科技有限公司 | Incineration flue gas minimum discharge purifying treatment method and its processing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110201975A (en) | A kind of abraum salt recycling treatment disposal system and application | |
| CN110201976A (en) | A kind of abraum salt recycling treatment processing system and application | |
| RU2193442C2 (en) | Flue gas treatment method | |
| CN101869800B (en) | Method and system for purifying flue gas generated by incinerating waste materials | |
| CN102620300A (en) | Method for treating production waste of phosphorus industry and products produced by same | |
| CN110201514A (en) | A kind of abraum salt recycling treatment exhaust treatment system and application | |
| CN112850745A (en) | Method for recycling waste incineration fly ash | |
| CN114620692B (en) | Process for preparing sulfuric acid by coking desulfurization foam sulfur melting and desulfurization waste liquid melting method salt extraction and mixed firing | |
| CN210523360U (en) | Processing system for waste salt resourceful treatment | |
| CN114890389B (en) | Pretreatment method of coking desulfurization acid-making raw material | |
| CN109279921B (en) | Method for producing calcium superphosphate by using industrial waste mixed acid | |
| CN108426250B (en) | A domestic waste gasification melting power generation system | |
| CN111288466A (en) | High-salt waste liquid incineration treatment method | |
| CN114797416A (en) | Method for ultralow emission treatment of sludge incineration tail gas | |
| CN113828615A (en) | Novel waste salt treatment system | |
| CN210523361U (en) | Waste salt resourceful treatment processing system | |
| CN104118851A (en) | Method for regenerating waste sulfuric acid containing high-concentration organic matters | |
| CN108273371A (en) | A kind of the industrial combustion process flue gas purifying method and system of double gas circuits | |
| CN110986053A (en) | Method for treating high-halogen hazardous waste | |
| CN214791158U (en) | Useless processing system of fluorine-containing danger | |
| KR102221791B1 (en) | Energy-saving recycling system and recycling method for by-products produced during sewage treatment | |
| CN214108258U (en) | Thermal desorption waste incineration fly ash treatment system | |
| CN108211761A (en) | A kind of method of pollutant in collaboration processing coking desulfurization waste liquor, calcium base solid waste and industrial smoke | |
| CN109174898B (en) | Medical waste thermal decomposition treatment system | |
| CN111410214A (en) | A system and method for preparing soda ash and sulfur by utilizing industrial by-product sodium sulfate |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220729 |