CN102755711A - Green destroying process for high-concentration strong acid (alkali) precursor chemicals - Google Patents
Green destroying process for high-concentration strong acid (alkali) precursor chemicals Download PDFInfo
- Publication number
- CN102755711A CN102755711A CN2011101092577A CN201110109257A CN102755711A CN 102755711 A CN102755711 A CN 102755711A CN 2011101092577 A CN2011101092577 A CN 2011101092577A CN 201110109257 A CN201110109257 A CN 201110109257A CN 102755711 A CN102755711 A CN 102755711A
- Authority
- CN
- China
- Prior art keywords
- alkali
- acid
- precursor chemicals
- photocatalysis
- light source
- 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.)
- Granted
Links
Images
Landscapes
- Catalysts (AREA)
Abstract
The invention aims to perform green destroying to high-concentration strong acid (alkali) precursor chemicals, reagents with various purities such as chemical purity and analytical purity, and industrial grade products using a series of processes such as acid (alkali) pretreatment, neutralization, and photocatalysis. By the process, acid (alkali) in the precursor chemicals can be destroyed, pH of final reaction solution after destroying is 6-8, no toxic gases are generated, environmental pollution is avoided, and valuable salt materials can be reclaimed through purification. The green destroying process is low in cost, high in efficiency, easy to operate, and suitable for processing the strong acid (alkali) precursor chemicals.
Description
Technical field
The present invention relates to the treatment process of precursor chemicals middle and high concentration acid (alkali).
Background technology
Along with the high speed development of science and technology, chemical synthesis class drugs will become global range abuse drugs the most widely.The current a lot of novel drugs that come out rely on chemical substance invariably as raw material and ingredients.Say there are not precursor chemicals from the drugs processing technology, just do not have refining drugs.The precursor chemicals of laws of China control reach 23 kinds.And Yunnan Province is because the decision of Special geography position and situation of banning drugs strengthens the scope of controlled precursor chemicals, and " Yunnan Province is prone to the malicious special chemical Item Management regulations of system " enumerated 28 kinds of precursor chemicals of control altogether.In these 28 kinds of precursor chemicals; What belong to soda acid has: ephedrine (Sanedrine), ergometrine, pseudoephedrine (dextrorotation ephedrine), ergotic acid, adjacent amino this acid of N-acetyl, ortho-aminobenzoic acid, phenylacetic acid, sulfuric acid, hydrogen chloride (hydrochloric acid), acetic anhydride (acetic anhydride), thionyl chloride; It is thus clear that acid-base class precursor chemicals proportion in being prone to the malicious special chemical substance of system is big, the kind number is numerous.Wherein because thionyl chloride and strong acid (alkali) type precursor chemicals major part is all poisonous and have corrosivity, in case destroy improperly, not only can cause severe contamination to environment, the more important thing is threat to life.Thereby making the being aligned police that handles a case is reluctant or has misgivings to investigate and seize these hazardous chemicals.Therefore, big to the destruction pressure of thionyl chloride and acid-base class precursor chemicals, task heavy, to new demand, the new challenge that banning drugs work under the existing situation proposes, this has caused the relevant leader's of the public security prohibition of drug great attention.
And present relevant report of also not seeing special to the research and development of precursor chemicals destroy device; Major part all is that public security department handles acid (alkali) precursor chemicals with the mode that landfill perhaps burns; Though this method treating capacity is big; But because the meeting volatilization in air of acid precursor chemicals such as (alkali), and airborne steam can generate poisonous sulfur dioxide and hydrogen chloride with its reaction.The mode of landfill not only can pollute soil, and toxic gas is discharged in the air.Related patent U.S. Patent No. or the article that can find at present are few, all are about spent acid or thionyl chloride vent gas treatment aspect.But need to prove; The processing that the patent article of finding is relevant all is very low gas or the liquid of concentration that produces in the production process, and treatment process of the present invention then is to handle chemical pure that public security department captures, analyze the reagent of various purity such as pure and the liquid precursor chemicals of acid (alkali) of technical grade product.
Summary of the invention
The purpose of this invention is to provide a kind of efficient treatment process of destroying acid (alkali) precursor chemicals, environment is not caused secondary pollution.But qualified discharge not only can also reclaim wherein valuable salts substances through purifying after treatment.Relating to following three granted patent: Wang Jiaqiang etc. among the present invention, is the method for the mesoporous crystal titanium dioxide of masterplate with the photosensitive activity thing, and patent of invention (is authorized: ZL200710065747.5); Wang Jia is strong etc., is the method that template prepares mesopore titania photocatalyst with plant peel, film, and patent of invention (is authorized: ZL200710065939.6); Wang Jia is strong etc., is visible light catalyst of matrix and preparation method thereof with the sial mesopore molecular sieve, and patent of invention (is authorized: ZL03117252.0).
The present invention compares landfill and conventional treatment method in the background technology, and following advantage is arranged:
This technology cost is low, and efficient is high, and is easy to operate, is convenient to realize scale.
This technology can be accomplished green the destruction through the light-catalyzed reaction of airtight preliminary treatment, sufficient acid-base neutralization and final step.
But qualified discharge not only can also reclaim wherein valuable salts substances through purifying after treatment.
Technical scheme of the present invention is: the first step, preliminary treatment; Second step, neutralization; The 3rd step, photocatalysis.
Pretreatment unit is an obturator, and the bottom is covered with the meso-porous molecular sieve material of one deck bigger serface, and inside is coated with last layer
With the mesoporous crystal titanium dioxide of alkali modification and insert a 100-1000W simulated solar light source, its objective is in the few part organic acid (alkali) that volatilizees in the photocatalytic degradation container or the absorption and inorganic acid alkali.
The transfer of acid (alkali) is adopted acid and alkali-proof pump with conveying.
Acid-base neutralization reaction tower top is the mesoporous crystal titanium dioxide layer with alkali modification; And insert a 100-1000W simulated solar light source; When its objective is the photocatalysis Decomposition neutralization reaction in few completely part organic acid (alkali) of unreacted or the absorption and inorganic acid (alkali); Adopt the spray equipment of two-layer shower nozzle up and down, when acid (alkali) precursor chemicals and the required alkali (acid) of neutralization reaction are transported to the acid-base neutralization reaction tower, at the bottom of cat head and tower, spray downwards with upwards respectively; The sprinkling amount is 10-1000L/h, and the concentration of the alkali (acid) of neutralizing acid (alkali) is 5%-50%.
Photocatalysis apparatus inside is coated with last layer with mesopore titania photocatalyst and insert a 100-1000W simulated solar light source; Adding photochemical catalyst concentration is 0.01-10mg/L, its objective is when handle be organic acid (alkali) time photocatalysis reduce in and COD in the waste liquid.
Figure of description is seen in technological process, specifies technical scheme of the present invention at present:
The first step: preliminary treatment
Open pretreatment unit; Directly put into acid (alkali) precursor chemicals of bottled or barreled; Cover pretreatment unit lid (ring flange) and guarantee sealing; Twist-off closure or bung insert pipeline then, open light source and carry out the photocatalysis preliminary treatment by it, and the organic acid (alkali) that part is volatilized carries out photocatalytic degradation (if inorganic acid alkali is then by the absorption of the mesopore molecular sieve of bottom) earlier; So just avoided chemicals in air, to volatilize or reacted the back toxic gas that is discharged being sucked, thereby reduced injury human body by human body.
Second step: neutralization
Pretreated acid (alkali) precursor chemicals are used the acid and alkali-proof pump suction; After treating to fill in the pump; Open delivery pump, it is transported to the acid-base reaction tower bottom smoothly and is upwards sprayed through spray equipment, and the sprinkling amount is looked the different of processing acid (alkali) kind and thermal discharge and decided; At this moment, the pump that adds the required alkali of neutralization reaction (acid) is opened, alkali (acid) is transported to the cat head end and sprays downwards under the effect of pump, and soda acid just can fully contact like this, the augmenting response area, and reaction is carried out more fully.Organic acid (alkali) mist that has few part not react completely is then outwards discharged (inorganic acid (alkali) mist is then by the photochemical catalyst of alkali modification absorption neutralization) by the photochemical catalyst photocatalysis Decomposition with alkali modification at cat head.
The 3rd step: photocatalysis
Be transported in the photocatalytic reaction device with the reactant liquor of acid and alkali-proof pump after neutralization reaction; The reactant liquor of opening after light source adding photochemical catalyst will neutralize carries out light-catalyzed reaction again; Purpose is the environmentally harmful organic acid (alkali) that still retains after the photocatalytic degradation neutralization reaction and the COD in the reactant liquor, finally accomplishes harmless emission.
The specific embodiment
Specific embodiment 1:
With 20L purity is that 99% thionyl chloride is put into pretreatment unit, cover lid, and twist-off closure or bung and insert pipeline are opened light source then.After half an hour, open the pump of carrying thionyl chloride, flow velocity controls to 10L/h, opens the pump of carrying alkali lye (concentration of lye is 30%) again, handles after two hours, records pH=7 in the gas outlet of reaction tower, the waste liquor PH after the processing=8.0.
Specific embodiment 2:
With 20L purity is that 36%～38% hydrochloric acid is put into pretreatment unit, covers the lid of pretreatment unit, and twist-off closure or bung insert pipeline then; Open the pump of carrying hydrochloric acid, flow velocity controls to 20L/h, opens the pump of carrying alkali lye (concentration of lye is 20%) again; Handle after one and a half hours; The temperature of tower is 80 ℃, records pH=7 in the gas outlet of reaction tower, the waste liquor PH after the processing=7.5.
Specific embodiment 3:
With 20L purity is that 96%～98% sulfuric acid is put into pretreatment unit, covers the lid of pretreatment unit, and twist-off closure or bung insert pipeline then; Open the pump of carrying sulfuric acid, flow velocity controls to 5L/h, opens the pump of carrying alkali lye (concentration of lye is 10%) again; Handle after four and a half hours; The temperature of tower is 95 ℃, records pH=7 in the gas outlet of reaction tower, the waste liquor PH after the processing=7.8.
Specific embodiment 4:
With 20L purity is that the ephedrine solution of 40%-50% is put into pretreatment unit, covers the lid of pretreatment unit, and twist-off closure or bung insert pipeline then, open light source.Open the pump of carrying ephedrine after half an hour, flow velocity controls to 20L/h, opens the pump of carrying acid solution (acid strength is 5%) again, handles after one and a half hours, and the temperature of tower is 75 ℃, records pH=7 in the gas outlet of reaction tower, the waste liquor PH after the processing=7.4.Introduce photo catalysis reactor to waste liquid again, open light source, after one hour, record the COD=35 of reactant liquor.
Specific embodiment 5:
With 20L purity is that the ergometrine solution of 40%-50% is put into pretreatment unit, covers the lid of pretreatment unit, and twist-off closure or bung insert pipeline then, open light source.Open the pump of carrying ergometrine after half an hour, flow velocity controls to 10L/h, opens the pump of carrying acid solution (acid strength is 8%) again, handle two and one-half-hours after, the temperature of tower is 80 ℃, records pH=7 in the gas outlet of reaction tower, the waste liquor PH after the processing=8.Introduce photo catalysis reactor to waste liquid again, open light source, after one hour, record the COD=30 of reactant liquor.
Claims (6)
1. the green of a high concentration strong acid (alkali) precursor chemicals is destroyed technology, it is characterized in that following steps: the first step, preliminary treatment; Second step, neutralization; The 3rd step, photocatalysis.
2. strong acid according to claim 1 (alkali) precursor chemicals are meant chemical pure that public security department captures, analyze the reagent of various purity such as pure and the liquid precursor chemicals of acid (alkali) of technical grade product.
3. treatment process according to claim 1; It is characterized in that: pretreatment unit is an obturator; The bottom is covered with the meso-porous molecular sieve material of one deck bigger serface; Inside is coated with last layer with the mesoporous crystal titanium dioxide of alkali modification and insert a 100-1000W simulated solar light source, its objective is in the few part organic acid (alkali) that volatilizees in the photocatalytic degradation container or the absorption and inorganic acid alkali.
4. treatment process according to claim 1 is characterized in that: the transfer of acid (alkali) is adopted acidproof (alkali) pump with conveying.
5. treatment process according to claim 1; It is characterized in that: acid-base neutralization reaction tower top is the mesoporous crystal titanium dioxide layer with alkali modification; And insert a 100-1000W simulated solar light source, when its objective is the photocatalysis Decomposition neutralization reaction in few completely part organic acid (alkali) of unreacted or the absorption with inorganic acid (alkali), the spray equipment of two-layer shower nozzle about adopting; When acid (alkali) precursor chemicals and the required alkali (acid) of neutralization reaction are transported to the acid-base neutralization reaction tower; At the bottom of cat head and tower, spray downwards with upwards respectively, the sprinkling amount is 10-1000L/h, and the concentration of the alkali (acid) of neutralizing acid (alkali) is 5%-50%.
6. treatment process according to claim 1; It is characterized in that: it is that template prepares mesopore titania photocatalyst and inserts a 100-1000W simulated solar light source with plant peel, film that photocatalytic reaction device inside is coated with last layer; Adding photochemical catalyst concentration is 0.01-10mg/L, its objective is when handle be organic acid (alkali) time photocatalysis reduce in and COD in the waste liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110109257.7A CN102755711B (en) | 2011-04-29 | 2011-04-29 | A kind of Green Destruction technique of high concentration strong acid (alkali) precursor chemicals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110109257.7A CN102755711B (en) | 2011-04-29 | 2011-04-29 | A kind of Green Destruction technique of high concentration strong acid (alkali) precursor chemicals |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102755711A true CN102755711A (en) | 2012-10-31 |
| CN102755711B CN102755711B (en) | 2016-03-30 |
Family
ID=47050509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110109257.7A Active CN102755711B (en) | 2011-04-29 | 2011-04-29 | A kind of Green Destruction technique of high concentration strong acid (alkali) precursor chemicals |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102755711B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106563685A (en) * | 2016-10-14 | 2017-04-19 | 汉义生物科技（北京）有限公司 | Method for destroying tetrahydrocannabinol |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1076139A (en) * | 1991-12-21 | 1993-09-15 | O·F·迪特里希 | Purification contains the method and the device thereof of gas, waste gas steam and the salt solution of undesirable chemical substance |
| CN1111546A (en) * | 1994-02-07 | 1995-11-15 | 石原产业株式会社 | Titanium oxide for photocatalyst and method of producing the same |
| US5977427A (en) * | 1995-06-14 | 1999-11-02 | Hitachi, Ltd. | Method for destroying organohalogen compounds |
| CN101024169A (en) * | 2007-03-26 | 2007-08-29 | 云南大学 | Method for preparing mesoporous crystal titanium dioxide using light-sensitive active matter as formboard |
| CN101069842A (en) * | 2007-06-07 | 2007-11-14 | 云南大学 | Method for preparing mesoporous titanium dioxide optical catalyst using plant peels and films |
| CN101767913A (en) * | 2010-01-21 | 2010-07-07 | 云南大学 | Method for treatment of high-salinity and high-concentration organic wastewater through process of high-efficiency photocatalytic vacuum separation of gas phase, liquid phase and solid phase |
-
2011
- 2011-04-29 CN CN201110109257.7A patent/CN102755711B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1076139A (en) * | 1991-12-21 | 1993-09-15 | O·F·迪特里希 | Purification contains the method and the device thereof of gas, waste gas steam and the salt solution of undesirable chemical substance |
| CN1111546A (en) * | 1994-02-07 | 1995-11-15 | 石原产业株式会社 | Titanium oxide for photocatalyst and method of producing the same |
| US5977427A (en) * | 1995-06-14 | 1999-11-02 | Hitachi, Ltd. | Method for destroying organohalogen compounds |
| CN101024169A (en) * | 2007-03-26 | 2007-08-29 | 云南大学 | Method for preparing mesoporous crystal titanium dioxide using light-sensitive active matter as formboard |
| CN101069842A (en) * | 2007-06-07 | 2007-11-14 | 云南大学 | Method for preparing mesoporous titanium dioxide optical catalyst using plant peels and films |
| CN101767913A (en) * | 2010-01-21 | 2010-07-07 | 云南大学 | Method for treatment of high-salinity and high-concentration organic wastewater through process of high-efficiency photocatalytic vacuum separation of gas phase, liquid phase and solid phase |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106563685A (en) * | 2016-10-14 | 2017-04-19 | 汉义生物科技（北京）有限公司 | Method for destroying tetrahydrocannabinol |
| CN106563685B (en) * | 2016-10-14 | 2020-03-24 | 汉义生物科技（北京）有限公司 | Method for destroying tetrahydrocannabinol |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102755711B (en) | 2016-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105728446A (en) | Soil remediation device capable of removing omethoate components in farmland soil | |
| CN208066104U (en) | A kind of chemical industry waste water station foul smell is collected and processing system | |
| CN104667674B (en) | Coating waste gas processes technique and device thereof | |
| CN103272463A (en) | Process for treating malodorous gases in sludge | |
| CN105920964A (en) | Waste gas and wastewater treatment system for electroplating industry | |
| CN105601064A (en) | Sludge reduction disinfection treatment method | |
| CN102755711B (en) | A kind of Green Destruction technique of high concentration strong acid (alkali) precursor chemicals | |
| CN107243230A (en) | A kind of processing unit of organic exhaust gas | |
| CN111068501A (en) | Absorption decomposition liquid, method and device for simultaneously removing hydrogen sulfide and ammonia waste gas | |
| CN107619072A (en) | It is a kind of to handle high COD, the curing agent and application method of high salinity waste water | |
| CN215276482U (en) | Tail gas processing apparatus is used in pesticide production | |
| CN209451623U (en) | A kind of high tower exhaust treatment system | |
| CN114288804A (en) | Process for treating peculiar smell generated by animals died of illness | |
| CN108706672A (en) | A kind of recycling processing method of ammonia nitrogen waste water | |
| CN209451624U (en) | A kind of exhaust treatment system in Chemical Manufacture | |
| CN212215092U (en) | Device for simultaneously removing hydrogen sulfide and ammonia waste gas | |
| CN101293179B (en) | Method for purifying organic matter waste gas by using waste timber biological mix liquid | |
| JP4248288B2 (en) | Recycling method of titanium metal-containing waste, titanium oxide coating liquid and manufacturing method thereof, titanium oxide member | |
| CN208684507U (en) | It is a kind of for handling the disinfection nitrogen rejection facility of landfill leachate | |
| CN105728447A (en) | Soil remediation method capable of removing omethoate components in farmland soil | |
| CN207071291U (en) | A kind of automatic control system of waste gas tower exhaust-gas treatment | |
| CN202185103U (en) | Combined equipment for processing high-concentration strong acid/alkali precursor chemicals | |
| CN109809434A (en) | A method of production refining industrial salt is recycled based on Cupric sulfate abraum salt | |
| CN219964509U (en) | Spray deodorizing tower | |
| CN208526278U (en) | Rotary gas cleaning equipment and system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |