CN101108337B - Hydrogen cyanide decomposing catalyst - Google Patents
Hydrogen cyanide decomposing catalyst Download PDFInfo
- Publication number
- CN101108337B CN101108337B CN2007100353431A CN200710035343A CN101108337B CN 101108337 B CN101108337 B CN 101108337B CN 2007100353431 A CN2007100353431 A CN 2007100353431A CN 200710035343 A CN200710035343 A CN 200710035343A CN 101108337 B CN101108337 B CN 101108337B
- Authority
- CN
- China
- Prior art keywords
- catalyst
- type
- oxide
- hcn
- hydrogen cyanide
- 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.)
- Active
Links
Images
Landscapes
- Catalysts (AREA)
Abstract
The invention relates to a catalyst for dissolving hydrogen cyanide, which is composed of two models and proceed catalyzing dissolving in sections in the same HCN dissolving device. The invention is characterized in that: the composite is composed of alumina oxide, SiOx, titanium oxide, inorganic salt and sesbania gum powder. With adding defined amount nitric acid solution in process, the invention has the advantages that: the invention can dissolve HCN completely, purify coal gas inclusion and toxic substance and increase the recycle coking fine chemical products revenue of the building user, which can take catalyzing effect in HCN dissolving groove widely.
Description
Affiliated field
The present invention relates to the catalyst of a kind of titaniferous, iron, specifically relates to a kind ofly reclaim technology at the coal tar product, is used to decompose the catalyst of hydrogen cyanide in the gas purification workshop section.
Background technology
Before the present invention, China reclaims at the coke gas product has thiamine process, AS negative pressure technology, nitronic acid potassium Process to come catalytic decomposition to reclaim hydrogen cyanide.Though this method can be decomposed hydrogen cyanide, decompose not thorough.
Summary of the invention
Purpose of the present invention will provide a kind of exactly can decompose fully, excellent catalytic effect in the HCN decomposer that the coal tar product reclaims in be used to decompose the catalyst of hydrogen cyanide.
The invention main points be: aluminium oxide, Si oxide, inorganic salts, titanium oxide, sesbania gum powder and acid etc. are for mainly processing raw material, according to different assembly, be processed into I type and II type, in the same HCN decomposer of segmenting function, wherein the II type is the catalyst of titaniferous, and the I type is the catalyst of iron content.
The aluminum oxide of indication of the present invention is meant alundum (Al, aluminium clay and boehmite; Si oxide is meant silicon clay, quartz sand, silica gel, thick-hole block silica gel powder; Titanium oxygen compound is meant titanium dioxide, metatitanic acid powder; Inorganic salts are meant ferric nitrate, ferrous sulfate; Acid refers to salpeter solution.Aluminum oxide has been a skeleton function in catalyst, and Si oxide and sesbania gum powder play moulding and agglomeration, and salpeter solution is used for dissolving titanium oxide; Titanium oxide, inorganic salts are the catalytic elements source of catalyst, i.e. titanium, iron.
Hydrogen cyanide decomposing catalyst, it is characterized in that it is by aluminum oxide, Si oxide, titanium oxide, sesbania gum powder, ferric nitrate, ferrous sulfate and salpeter solution process, and according to different assembly, be processed into I type and II type, the I type is the catalyst of iron content, it is characterized in that described aluminum oxide is the aluminium clay, the processing compositions weight percent component of I type iron-containing catalyst is aluminium clay 60-90, ferric nitrate 1-15, ferrous sulfate 1-30, the II type is the catalyst of titaniferous, the weight percent component of its processing compositions is aluminum oxide 30-95, Si oxide 5-30, titanium oxide 1-15, sesbania gum powder 1-5, the salpeter solution 5-20 of 1-6%, I type and II type act in the same hydrogen cyanide decomposer, the segmentation continuous catalysis, at first under I type catalyst action, react, under the effect of II type catalyst, continue reaction then.
Reaction operation principle of the present invention is: what remove from coke gas contains H
2Sour gas such as S and HCN, in the HCN preheater, be heated to 160 ℃ by hot coal oil after, decompose required air and steam mixing in pipe-line mixer with HCN, be sent to together in the HCN decomposer of the catalyst of the present invention of filling, under the effect of catalyst, decompose.
The HCN decomposer is rectangular consubstantiality, and being divided into is seven layers, is separated by orifice plate in every layer, and promptly the mixed gas layer 1, ceramic catalyst support layer 2, catalyst support layer 3, iron content HCN catalyst layer I4, titanium-containing catalyst layer II5, catalyst support layer 6, ceramic catalyst support layer 7.Its reaction is as follows: at first be to react under the catalysis of I in iron-containing catalyst 4, its reaction equation is:
HCN+H
2O=NH
3+ CO is about to cyanide and decomposes, and analyte is entered into lower floor continue reaction, in the effect of continuous catalysis, remainder is decomposed.It below is the reaction equation that continues decomposition reaction by titanium-containing catalyst.
CS
2+H
2O＝CO
2S+H
2S
CO
2S+H
2O＝CO
2+H
2S
C
2S+CO
2＝2COS
CO+H
2O＝CO
2+H
2
The invention has the advantages that 1. processing technology is simple, as long as general technology of making industrial ceramics can be made success, 2. this catalyst is owing to be by two kinds of models, segmentation continuous catalysis in same reactive tank, so catalytic decomposition is effective, help the air environmental protection, 3. the HCN that reclaims after decomposing can make other chemical products again, for applying unit increases income.
Marginal data
Fig. 1 is the distribution schematic diagram of catalyst and filler in the HCN decomposer, among the figure
1-coal gas enters layer, and 2,7-ceramic catalyst carrier layer, 3,6-catalyst (protection) carrier layer, 4-is an iron-containing catalyst I layer of the present invention, 5-is a titanium-containing catalyst II layer of the present invention.
Embodiment
Embodiment one: titanium-containing catalyst II
The first step, batching be with measurement instrument accurately, inerrably percentage takes by weighing following raw material and prepares by weight:
Intend algae diaspore 65kg
Thick-hole block silica gel powder 28kg
Metatitanic acid powder 5kg
Sesbania gum powder 2.9kg
Second step was that four kinds of raw material were mediated in kneader 15 minutes, (the nitric acid liquid consumption is convenient to extrusion with molding mass and is advisable to add an amount of 3% salpeter solution again, kneaded molding mass resembles mud section that vacuum deairing machine practises for well), molding mass can not be too rare (too rare meeting makes that the bar of extruding bonds easily, intensity relatively poor), can not be too dried (molding mass is too dried, can increase mechanical extrusion pressure, product appearance is second-rate), the molding mass time of mediating mediates agglomerating with molding mass, be convenient to extrusion and be advisable, general 10～20 minutes.
The 3rd step extruded moulding.Adopt hydraulic press or twin-screw banded extruder extruded moulding, pore size of template is Φ 4.3～4.5mm, and the billot of extruding should be smooth, non-caked, and billot is contained in stainless steel or the aluminium dish.With the semi-finished product of extruding (80～105 ℃ of drying room baking temperatures) in drying room, semi-finished product.
The activation of the 4th step activates semi-finished product.Activation temperature is 560 ℃, as activating product with pushed bat kiln, thermometric instrument below the carborundum plate can suitably improve 15～20 ℃ of temperature, and the semi-finished product that are contained in the stainless steel alms bowl can not overfill, otherwise, the product that activation is come out, part can present canescence (as this kind phenomenon occurring, product should reactivate), qualified product, outward appearance should be white, can use.
Embodiment two: iron-containing catalyst I
The first step, make alumina support, become active alumina catalyst carrier through 550 ℃ of-560 ℃ of calcining and activatings by the common manufacture craft of pottery.
Second step, take by weighing ferric nitrate and be dissolved in filling in the water and dissolve in the container, ferric nitrate is 3: 100 with the ratio of water, takes by weighing ferrous sulfate after the dissolving again and joins in the iron nitrate solution and stir, and above-mentioned iron nitrate solution is 100: 27 with adding the ferrous ratio of acid that becomes a mandarin.After treating that dissolving does not have suspension, with the immersion of active aluminum oxide carrier input, and constantly stir, the active aluminum oxide carrier that takes out immersion then washes for several times with clear water.
The 3rd step, will soak the dried semi-finished product drying of filter, and with the activated alumina semi-finished product catalyst that soaks after the drying as for carrying out activation processing in 350 ℃ the kiln.Use through being positioned in the HCN decomposer after the activation processing.
Claims (1)
1. hydrogen cyanide decomposing catalyst, it is characterized in that it is by aluminum oxide, Si oxide, titanium oxide, sesbania gum powder, ferric nitrate, ferrous sulfate and salpeter solution process, and according to different assembly, be processed into I type and II type, the I type is the catalyst of iron content, it is characterized in that described aluminum oxide is the aluminium clay, the processing compositions weight percent component of I type iron-containing catalyst is aluminium clay 60-90, ferric nitrate 1-15, ferrous sulfate 1-30, the II type is the catalyst of titaniferous, the weight percent component of its processing compositions is aluminum oxide 30-95, Si oxide 5-30, titanium oxide 1-15, sesbania gum powder 1-5, the salpeter solution 5-20 of 1-6%, I type and II type act in the same hydrogen cyanide decomposer, the segmentation continuous catalysis, at first under I type catalyst action, react, under the effect of II type catalyst, continue reaction then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100353431A CN101108337B (en) | 2007-07-06 | 2007-07-06 | Hydrogen cyanide decomposing catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100353431A CN101108337B (en) | 2007-07-06 | 2007-07-06 | Hydrogen cyanide decomposing catalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101108337A CN101108337A (en) | 2008-01-23 |
| CN101108337B true CN101108337B (en) | 2010-09-22 |
Family
ID=39040713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100353431A Active CN101108337B (en) | 2007-07-06 | 2007-07-06 | Hydrogen cyanide decomposing catalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101108337B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109248692B (en) * | 2018-08-22 | 2021-06-18 | 昆明理工大学 | Preparation method and application of hydrogen cyanide hydrolysis synergistic catalyst |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1217229A (en) * | 1997-11-14 | 1999-05-26 | 黄建明 | Improved catalyst for ammonia decomposition |
| CN1227135A (en) * | 1999-02-05 | 1999-09-01 | 魏雄辉 | Gas decarbonization, desulfuration and decyanation technology by Fe-alkalisolution catalyst method |
| CN1564710A (en) * | 2001-10-09 | 2005-01-12 | 阿克森斯公司 | Use of a TiO2 composition as catalyst for hydrolyzing COS and/or HCN in a gas mixture |
| WO2006104612A2 (en) * | 2005-03-24 | 2006-10-05 | W.R. Grace & Co.-Conn. | Method for controlling nox emissions in the fccu |
-
2007
- 2007-07-06 CN CN2007100353431A patent/CN101108337B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1217229A (en) * | 1997-11-14 | 1999-05-26 | 黄建明 | Improved catalyst for ammonia decomposition |
| CN1227135A (en) * | 1999-02-05 | 1999-09-01 | 魏雄辉 | Gas decarbonization, desulfuration and decyanation technology by Fe-alkalisolution catalyst method |
| CN1564710A (en) * | 2001-10-09 | 2005-01-12 | 阿克森斯公司 | Use of a TiO2 composition as catalyst for hydrolyzing COS and/or HCN in a gas mixture |
| WO2006104612A2 (en) * | 2005-03-24 | 2006-10-05 | W.R. Grace & Co.-Conn. | Method for controlling nox emissions in the fccu |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101108337A (en) | 2008-01-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107285600A (en) | A kind of method that catalyst prepared using industrial and mineral solid waste carries out pyrolyzing sludge preparing active carbon | |
| Owusu | Physical-chemistry study of sodium silicate as a foundry sand binder | |
| CN107469803B (en) | Sulfur recovery catalyst and preparation method thereof | |
| CN112316913A (en) | Water treatment adsorbent using red mud waste residues as raw materials and preparation method thereof | |
| CN106915952B (en) | Method for producing magnesium-calcium ramming mass for AOD furnace by using waste magnesium-calcium bricks | |
| CN110002779A (en) | With the method for titanium extraction tailings production slag micropowder | |
| CN105272340B (en) | A kind of method that decomposing phosphogypsum prepares silico-calcium matter porous ceramic grain and sulfuric acid | |
| CN101108337B (en) | Hydrogen cyanide decomposing catalyst | |
| CN106699104A (en) | FCC (Fluid Catalytic Cracking) waste catalyst doped autoclaved flyash-lime brick and making method thereof | |
| CN104512951A (en) | Method for co-production of ploysilicate aluminium ferric sulphate and waste water treatment powder by PAC (poly aluminum chloride) residues | |
| CN104098094A (en) | Active carbon for adsorbing phosphine and preparation method of active carbon | |
| CN103240069B (en) | Titanium dioxide/active carbon photocatalyst and preparation method and application thereof | |
| CN102671664A (en) | Slag-based cementitious material-iron oxide semi-conductor composite catalyst and application in solar photocatalytic hydrogen production through water decomposition | |
| CN103432876A (en) | Method for treating tail gases from kilns | |
| Li et al. | Effective removal of methylene blue dye from water with nanocomposite ceramsites in a fixed-bed column | |
| CN106745324A (en) | PAFS, preparation method and applications | |
| CN111499281A (en) | Crystal sludge and water purifying agent waste residue geopolymer grouting material and preparation method thereof | |
| CN105837185A (en) | Corundum ozone-releasing aerator and manufacturing method thereof | |
| US20050116395A1 (en) | Method for aluminum residue ash recycling utilization | |
| CN106220210A (en) | Fibrous ceramic insulation based on polyaluminium chloride waste residue and preparation method thereof | |
| CN115180887B (en) | Method for fixing heavy metal by using phosphate geopolymer | |
| CN101024170A (en) | Photocatalyst product and preparing method | |
| CN103785485A (en) | Preparation method of clean binder | |
| CN103303914B (en) | Diamond purification technology | |
| KR101403805B1 (en) | Catalyst for removing acidic gas contained in coke oven gas and method for producing the same |
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 | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 337000 Pingxiang economic and Technological Development Zone, Jiangxi Province, the Yangtze River Management Office, Pingxiang Patentee after: JIANGXI PANGTAI ENVIRONMENT PROTECTION CO., LTD. Address before: 337000 economic development zone, Anyuan District, Jiangxi, Pingxiang Patentee before: Pingxiang Pangtai Industry Co., Ltd. |