CN105597733A - Method for reproducing denitration catalyst from waste catalyst - Google Patents
Method for reproducing denitration catalyst from waste catalyst Download PDFInfo
- Publication number
- CN105597733A CN105597733A CN201510936649.9A CN201510936649A CN105597733A CN 105597733 A CN105597733 A CN 105597733A CN 201510936649 A CN201510936649 A CN 201510936649A CN 105597733 A CN105597733 A CN 105597733A
- Authority
- CN
- China
- Prior art keywords
- catalyst
- waste material
- waste
- denitrating catalyst
- pug
- 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
Classifications
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/30—Tungsten
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Catalysts (AREA)
Abstract
The invention provides a method for reproducing a denitration catalyst from a waste catalyst. The method comprises the following concrete steps: subjecting a waste denitration catalyst produced in production process to high temperature roasting at 600 to 700 DEG C for 4 to 6 h; then crushing and grinding the roasted waste denitration catalyst in a crusher so as to obtain powder particles with a particle size of lower than 20 [mu]m, thereby obtaining a recycled denitration catalyst material; adding the recycled denitration catalyst material accounting for 50 to 80 wt% of titanium dioxide into a mixing mill during mixing; and adjusting the addition amounts of small-amount materials and physical property parameters of a mud material during mixing and subjecting the mud material having undergone mixing to extrusion, drying and calcining according to a conventional method so as to obtain the denitration catalyst with a high moulding rate. The method is simple to operate, small in energy consumption and low in cost; the prepared denitration catalyst has the advantages of a high specific surface area, great compressive strength, good activity, a high moulding rate and further reduced cost. The method changes the waste into the valuable while overcoming problems of waste accumulation and treatment and achieves the strategic target of sustainable development of enterprises.
Description
Technical field
The present invention relates to the technical field of Catalyst Production technique, particularly the denitration of a kind of waste material catalyst regeneration product is urgedThe production method of agent.
Background technology
In recent years, In The Atmosphere Over China pollution condition is on the rise, and people's productive life is caused to very adverse influence. ItsIn, nitrogen oxide is as one of major pollutants in atmosphere, and its emission control is national economy sustainable development and ring alwaysThe urgent objective requirement of border protection. In China, coal fired power generation is one of main source of NO_x in Air Environment generation, therefore controlPower plant processed discharged nitrous oxides is most important, and the core of control discharged nitrous oxides is denitrating catalyst, along with GB13223-Formal issue and the enforcement of 2011 " thermal power plant's pollutant emission standards ", the outburst under environmental protection policy promotes of denitration market, denitrationCatalyst Production enterprise emerges in large numbers like the mushrooms after rain throughout the country.
The time of short 3-4, denitrating catalyst production capacity is considerably beyond the normal market demand, and production capacity occurs seriousSuperfluous. At present, there is already the situation of very serious harmful competition, honeycomb type denitrification catalyst valency in denitrating catalyst marketLattice are kept falling, and nonetheless, a lot of manufacturing enterprises still do not have order, and Some Enterprises faces " bankruptcy is difficult ". So severeMarket competition environment under, Some Enterprises, in order reducing costs, not to be stinted and is used inferior materials and turned out substandard goods, and adulterates, and disrupts the market, and is with to ownerCarry out follow-up operation problem seriously, the development of also having forfeited enterprise self.
Under severe like this situation, enterprise wants seeking development, about the production cost that how to reduce catalyst, carries soHigh product quality, so that the stable for a long time operation of enterprise becomes an extremely urgent problem.
Major part denitrating catalyst enterprise especially goes into operation the initial stage at production period, and unstable product quality can form largeThe waste material (leftover pieces, defective work) of amount, the main component titanium in these waste materials, most that tungsten accounts for catalyst are produced intoThis, and vanadium in waste material is very big to environmental hazard, if directly waste material is abandoned and has not only increased production cost, and harm ringBorder, causes severe contamination to environment. At present, existing many enterprises are direct by a small amount of waste recovery utilization in order to reduce costs, andAnd test discovery, a small amount of waste material reuse can not affect the use of catalyst, but the quality of product and ratio of briquetting can be had a greatly reduced quality.Can be how numerous enterprises control strengthening the ratio of briquetting that ensure product quality in returns uses and improve product always" bottleneck " of cost, this be also crowd institute become.
Summary of the invention
For the problems referred to above, the present invention has developed a kind of production method of waste material catalyst regeneration product denitrating catalyst, systemThe product specific area obtaining is high, and compression strength is large, active good, having improved widely the quality that catalyst is produced in regeneration, and ratio of briquettingHigher.
Technical scheme provided by the invention is such, and a kind of waste material catalyst regeneration produces the producer of denitrating catalystMethod, after 600-700 DEG C of high-temperature roasting 4-6h, pulverizes denitrating catalyst waste material to grind to form the powder of particle diameter lower than 20 μ mGrain, obtains denitrating catalyst returns; By denitrating catalyst returns, in mixing process with the ratio of the 50-80wt% of titanium dioxideExample drops into mixing roll again, it is characterized in that: in mixing process, add small powder, make pug after mixing according to a conventional methodExtrude, be dried, calcine, prepare moulding denitrating catalyst, described small powder comprises carboxymethyl cellulose, poly-epoxy secondAlkane, stearic acid.
It is further characterized in that: adjust mixing process and add the amount of small powder and the physical parameter of pug, will produce uselessExpect that direct vast scale is back in Catalyst Production process;
The physical parameter of described pug refers to plasticity and the moisture of pug. The physical property of pug ginseng in described adjustment mixing processNumber refers to adjusts pug physical property state, makes its plasticity reach 2-3N, makes moisture reach 28-30% simultaneously;
The mass percent of described carboxymethyl cellulose is that the mass percent of 0.1-0.5%, described PEO is 0.5-2%, described stearic mass percent is 0.1-0.5%;
Described titanium dioxide is titanium tungsten powder and titanium tungsten silica flour;
Described denitrating catalyst waste material is that the leftover pieces that produce in production process are or/and defective work.
The present invention adopts after aforementioned production method, owing to adding small powder in mixing process, makes pug after mixingExtrude according to a conventional method, be dried, calcine, prepare moulding denitrating catalyst, small powder comprises carboxymethyl cellulose, poly-ringOxidative ethane, stearic acid, the product specific area making is high, and compression strength is large, active good, has improved widely regeneration and has produced catalystQuality, and ratio of briquetting is higher.
Detailed description of the invention
The invention will be further described below:
Embodiment mono-,
1, the preparation of denitrating catalyst returns
Denitrating catalyst waste material, after 650 DEG C of high-temperature roasting 5h, is ground to form to the powder of particle diameter lower than 20 μ m by pulverizerGrain, obtains denitrating catalyst returns;
2, the preparation of denitrating catalyst
By denitrating catalyst returns, the ratio with the 50wt% of titanium dioxide in mixing process drops into mixing roll again, adds littleCarboxymethyl cellulose, the PEO of 1.5wt% and the stearic acid of 0.2wt% of material 0.3wt%, adjust pug physical property state, makesIts plasticity reaches 2.2N, makes moisture reach 28.5% simultaneously;
Pug is extruded according to a conventional method, is dried, is calcined after mixing, prepares denitrating catalyst;
3, the ratio of briquetting of catalyst statistics
Appearance yield on average reaches 98.2%;
4, the performance parameter of catalyst evaluation and test
By ratio surface area instrument, pressure testing machine, catalyst test apparatus, the catalyst of preparation is detected to analysis. Performance inspectionSurvey operating mode is as follows:
Test result is as follows:
Active design load is 37m/h.
Embodiment bis-,
1, the preparation of denitrating catalyst returns
Denitrating catalyst waste material, after 650 DEG C of high-temperature roasting 4h, is ground to form to the powder of particle diameter lower than 20 μ m by pulverizerGrain, obtains denitrating catalyst returns;
2, the preparation of denitrating catalyst
By denitrating catalyst returns, the ratio with the 60wt% of titanium dioxide in mixing process drops into mixing roll again, adds littleCarboxymethyl cellulose, the PEO of 2wt% and the stearic acid of 0.1wt% of material 0.1wt%, adjust pug physical property state, makes itPlasticity reaches 2.5N, makes moisture reach 28.8% simultaneously;
Pug is extruded according to a conventional method, is dried, is calcined after mixing, prepares denitrating catalyst;
3, the ratio of briquetting of catalyst statistics
Appearance yield on average reaches 98.0%;
4, the performance parameter of catalyst evaluation and test
By ratio surface area instrument, pressure testing machine, catalyst test apparatus, the catalyst of preparation is detected to analysis. Performance inspectionSurvey operating mode is as follows:
Test result is as follows:
Active design load is 37m/h
Embodiment tri-,
1, the preparation of denitrating catalyst returns
Denitrating catalyst waste material, after 650 DEG C of high-temperature roasting 6h, is ground to form to the powder of particle diameter lower than 20 μ m by pulverizerGrain, obtains denitrating catalyst returns;
2, the preparation of denitrating catalyst
By denitrating catalyst returns, the ratio with the 70wt% of titanium dioxide in mixing process drops into mixing roll again, adds littleCarboxymethyl cellulose, the PEO of 0.5wt% and the stearic acid of 0.5wt% of material 0.5wt%, adjust pug physical property state, makesIts plasticity reaches 2.8N, makes moisture reach 29.4% simultaneously;
Pug is extruded according to a conventional method, is dried, is calcined after mixing, prepares denitrating catalyst;
3, the ratio of briquetting of catalyst statistics
Appearance yield on average reaches 98.2%;
4, the performance parameter of catalyst evaluation and test
By ratio surface area instrument, pressure testing machine, catalyst test apparatus, the catalyst of preparation is detected to analysis. Performance inspectionSurvey operating mode is as follows:
Test result is as follows:
Active design load is 37m/h
In the present invention:
1, the physical parameter of pug refers to plasticity and the moisture of pug, and the physical parameter of adjusting pug in mixing process refers to adjustmentPug physical property state, makes its plasticity reach 2-3N, makes moisture reach 28-30% simultaneously;
2, ratio of briquetting refers to the appearance yield of product, described ratio of briquetting is higher refer to by adjust in mixing process, add littleAfter the amount of material and the physical parameter of pug, the appearance yield that makes product can be brought up to more than 98%.
Beneficial effect of the present invention is for adopting this method simple to operate, and energy consumption is little, and cost is low, and the denitrating catalyst of preparation producesProduct after testing specific area reach 61m2/ g, axial compression strength reaches 3.5MPa, and radial crushing strength reaches 1.5MPa, productActivity reaches as high as 42m/h, and formed product rate can bring up to more than 98%, further reduces costs, and is solving waste from stackingWith a processing difficult problem time, turn waste into wealth, realize the strategic objective of Sustainable Development of Enterprises.
The present invention can summarize with other the concrete form without prejudice to spirit of the present invention or principal character. Of the present inventionAbove-mentioned embodiment all can only be thought explanation of the present invention instead of restriction, therefore every foundation essence technology of the present inventionAny trickle amendment, equivalent variations and modification that above embodiment is done, all belong in the scope of technical solution of the present invention.
Claims (7)
1. waste material catalyst regeneration produces a production method for denitrating catalyst, and denitrating catalyst waste material is high in 600-700 DEG CAfter temperature roasting 4-6h, pulverize and grind to form the powder particle of particle diameter lower than 20 μ m, obtain denitrating catalyst returns; By denitration catalystAgent returns, the ratio with the 50-80wt% of titanium dioxide in mixing process drops into mixing roll again, it is characterized in that: mixingIn process, add small powder, make pug after mixing, extrude according to a conventional method, be dried, calcine, prepare moulding de-Denox catalyst, described small powder comprises carboxymethyl cellulose, PEO, stearic acid.
2. the production method that a kind of waste material catalyst regeneration produces denitrating catalyst according to claim 1, is characterized in that: adjustWhole mixing process adds the amount of small powder and the physical parameter of pug, and direct production waste vast scale is back to Catalyst ProductionIn process.
3. the production method that a kind of waste material catalyst regeneration produces denitrating catalyst according to claim 2, is characterized in that: instituteThe physical parameter of the pug of stating refers to plasticity and the moisture of pug.
4. in the adjustment mixing process described in, the physical parameter of pug refers to and adjusts pug physical property state, makes its plasticity reach 2-3N makes moisture reach 28-30% simultaneously.
5. the production method that a kind of waste material catalyst regeneration produces denitrating catalyst according to claim 1, is characterized in that: instituteThe mass percent of stating carboxymethyl cellulose be the mass percent of 0.1-0.5%, described PEO be 0.5-2%, described inStearic mass percent is 0.1-0.5%.
6. the production method that a kind of waste material catalyst regeneration produces denitrating catalyst according to claim 1, is characterized in that: instituteThe titanium dioxide of stating is titanium tungsten powder and titanium tungsten silica flour.
7. the production method that a kind of waste material catalyst regeneration produces denitrating catalyst according to claim 1, is characterized in that: instituteState denitrating catalyst waste material and be the leftover pieces that produce in production process or/and defective work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510936649.9A CN105597733A (en) | 2015-12-15 | 2015-12-15 | Method for reproducing denitration catalyst from waste catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510936649.9A CN105597733A (en) | 2015-12-15 | 2015-12-15 | Method for reproducing denitration catalyst from waste catalyst |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105597733A true CN105597733A (en) | 2016-05-25 |
Family
ID=55978399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510936649.9A Pending CN105597733A (en) | 2015-12-15 | 2015-12-15 | Method for reproducing denitration catalyst from waste catalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105597733A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106622284A (en) * | 2016-12-05 | 2017-05-10 | 清华大学 | Recovery and utilization technology of waste titanium-vanadium based SCR catalyst capable of being applied to reproduction |
| CN108126763A (en) * | 2018-02-13 | 2018-06-08 | 宜兴市宜刚环保工程材料有限公司 | A kind of denitrating catalyst and preparation method thereof |
| CN108283921A (en) * | 2018-01-10 | 2018-07-17 | 北京国电龙源环保工程有限公司 | 60 hole SCR denitration modules and preparation method thereof |
| CN118326161A (en) * | 2024-06-13 | 2024-07-12 | 昆明理工大学 | Method for preparing Si-Ti alloy solder and simultaneously recovering tungsten and vanadium by utilizing waste SCR catalyst and crystalline silicon waste |
| CN118326161B (en) * | 2024-06-13 | 2024-08-13 | 昆明理工大学 | Method for preparing Si-Ti alloy solder and simultaneously recovering tungsten and vanadium by utilizing waste SCR catalyst and crystalline silicon waste |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049317A (en) * | 2010-12-15 | 2011-05-11 | 重庆远达催化剂制造有限公司 | Recycling method of denitration catalyst waste and denitration catalyst prepared from denitration catalyst waste |
| CN104147980A (en) * | 2014-08-03 | 2014-11-19 | 浙江海亮环境材料有限公司 | Net hole forming extruder and SCR catalyst manufacturing process based on extruder |
| CN104741113A (en) * | 2015-04-02 | 2015-07-01 | 易能（马鞍山）大气治理科技有限公司 | Low-cost denitration catalyst and preparation method thereof |
| CN105126818A (en) * | 2015-08-28 | 2015-12-09 | 湖北省轻工业科学研究设计院 | Wear-resistant anti-poisoning honeycomb SCR denitration catalyst and preparation method thereof |
-
2015
- 2015-12-15 CN CN201510936649.9A patent/CN105597733A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102049317A (en) * | 2010-12-15 | 2011-05-11 | 重庆远达催化剂制造有限公司 | Recycling method of denitration catalyst waste and denitration catalyst prepared from denitration catalyst waste |
| CN104147980A (en) * | 2014-08-03 | 2014-11-19 | 浙江海亮环境材料有限公司 | Net hole forming extruder and SCR catalyst manufacturing process based on extruder |
| CN104741113A (en) * | 2015-04-02 | 2015-07-01 | 易能（马鞍山）大气治理科技有限公司 | Low-cost denitration catalyst and preparation method thereof |
| CN105126818A (en) * | 2015-08-28 | 2015-12-09 | 湖北省轻工业科学研究设计院 | Wear-resistant anti-poisoning honeycomb SCR denitration catalyst and preparation method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106622284A (en) * | 2016-12-05 | 2017-05-10 | 清华大学 | Recovery and utilization technology of waste titanium-vanadium based SCR catalyst capable of being applied to reproduction |
| CN108283921A (en) * | 2018-01-10 | 2018-07-17 | 北京国电龙源环保工程有限公司 | 60 hole SCR denitration modules and preparation method thereof |
| CN108126763A (en) * | 2018-02-13 | 2018-06-08 | 宜兴市宜刚环保工程材料有限公司 | A kind of denitrating catalyst and preparation method thereof |
| CN108126763B (en) * | 2018-02-13 | 2019-03-12 | 宜兴市宜刚环保工程材料有限公司 | A kind of denitrating catalyst and preparation method thereof |
| CN118326161A (en) * | 2024-06-13 | 2024-07-12 | 昆明理工大学 | Method for preparing Si-Ti alloy solder and simultaneously recovering tungsten and vanadium by utilizing waste SCR catalyst and crystalline silicon waste |
| CN118326161B (en) * | 2024-06-13 | 2024-08-13 | 昆明理工大学 | Method for preparing Si-Ti alloy solder and simultaneously recovering tungsten and vanadium by utilizing waste SCR catalyst and crystalline silicon waste |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104300119B (en) | A kind of preparation method of lithium iron phosphate positive material | |
| CN102327783B (en) | Method for preparing denitration catalyst carrier TiO2-WO3 composite powder | |
| CN103819760B (en) | A kind of processing method preparing high-performance carbon black rubber master batch | |
| CN105597733A (en) | Method for reproducing denitration catalyst from waste catalyst | |
| CN114178032B (en) | Production method of spheroidized graphite with low specific surface area | |
| CN102583522A (en) | Preparation method for titanium dioxide serving as catalyst carrier | |
| CN103484098A (en) | Low-density high-strength ceramsite proppant and preparation method thereof | |
| CN103962189A (en) | Recovery method of waste SCR (Selective Catalytic Reduction) catalyst, recovery cleaning fluid and catalyst prepared from recovered catalyst | |
| CN105948702A (en) | Porcelain plate blank powder and preparation technology thereof | |
| CN106587765A (en) | Method for preparing ceramsites and ceramsites prepared by method | |
| CN102896316A (en) | Production process of diamond saw blade formed by compressing granular powders | |
| CN2757922Y (en) | Tetrahedral conical grinding body | |
| CN102432014B (en) | Preparation method of submicron carbonized boron powder | |
| WO2024114239A1 (en) | Physically modified fly ash and preparation method therefor | |
| CN106698383B (en) | A method of LiFePO 4 material is prepared using coir fibre | |
| CN103819183B (en) | A kind of method of manganese-zinc ferrite waste recovery recycling | |
| CN103143716A (en) | Preparation method of tungsten powder | |
| CN105294313B (en) | Low-grade talc fertilizer anti-caking agent and preparation method and application thereof | |
| CN107629801A (en) | One heavy metal species soil conditioner and preparation method thereof | |
| CN105238496B (en) | Coal additive with grinding aiding effect | |
| CN103614552B (en) | Weathered ore prepares the method for acidic oxidation pellet binder | |
| CN110922993A (en) | Preparation system of semi-coke-based formed activated coke and operation method thereof | |
| CN110773298A (en) | Staged grinding method for slag micro powder | |
| CN103157431A (en) | Preparation method for desulfurizing agent | |
| CN110835679B (en) | Method for preparing granular spodumene by granulating fine powder spodumene |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into 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: 20160525 |