CN111921564B - Reinforcing agent for reinforcing adhesive capacity of catalyst-loaded silicon-aluminum-phosphorus molecular sieve and filling device suitable for catalyst - Google Patents
Reinforcing agent for reinforcing adhesive capacity of catalyst-loaded silicon-aluminum-phosphorus molecular sieve and filling device suitable for catalyst Download PDFInfo
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- 239000003054 catalyst Substances 0.000 title claims abstract description 85
- -1 silicon-aluminum-phosphorus Chemical compound 0.000 title claims abstract description 56
- 239000002808 molecular sieve Substances 0.000 title claims abstract description 53
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 239000012744 reinforcing agent Substances 0.000 title claims abstract description 35
- 238000011049 filling Methods 0.000 title abstract description 43
- 230000003014 reinforcing effect Effects 0.000 title description 8
- 239000000853 adhesive Substances 0.000 title description 7
- 230000001070 adhesive effect Effects 0.000 title description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 72
- 229910052878 cordierite Inorganic materials 0.000 claims abstract description 46
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 36
- 239000000654 additive Substances 0.000 claims abstract description 29
- 230000000996 additive effect Effects 0.000 claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 18
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 17
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 10
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims abstract description 7
- 239000004375 Dextrin Substances 0.000 claims abstract description 7
- 229920001353 Dextrin Polymers 0.000 claims abstract description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 7
- 235000011114 ammonium hydroxide Nutrition 0.000 claims abstract description 7
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 7
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims abstract description 7
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims abstract description 7
- 235000019425 dextrin Nutrition 0.000 claims abstract description 7
- 239000003623 enhancer Substances 0.000 claims abstract description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 7
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 235000019422 polyvinyl alcohol Nutrition 0.000 claims abstract description 5
- 239000011347 resin Substances 0.000 claims abstract description 5
- 229920005989 resin Polymers 0.000 claims abstract description 5
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims abstract description 4
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000002708 enhancing effect Effects 0.000 claims abstract description 4
- 244000275012 Sesbania cannabina Species 0.000 claims abstract 2
- 239000000919 ceramic Substances 0.000 claims description 42
- 238000003756 stirring Methods 0.000 claims description 42
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 36
- 239000002002 slurry Substances 0.000 claims description 30
- 238000002360 preparation method Methods 0.000 claims description 25
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 24
- 239000011148 porous material Substances 0.000 claims description 24
- 239000000126 substance Substances 0.000 claims description 23
- 239000010963 304 stainless steel Substances 0.000 claims description 18
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 18
- 238000001035 drying Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 12
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 239000012066 reaction slurry Substances 0.000 claims description 12
- 238000002791 soaking Methods 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000005216 hydrothermal crystallization Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000001308 synthesis method Methods 0.000 claims description 6
- 238000003786 synthesis reaction Methods 0.000 claims description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 229940051841 polyoxyethylene ether Drugs 0.000 claims 1
- 229920000056 polyoxyethylene ether Polymers 0.000 claims 1
- 239000012948 isocyanate Substances 0.000 abstract 1
- 150000002513 isocyanates Chemical class 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 26
- 239000002184 metal Substances 0.000 description 26
- 238000011068 loading method Methods 0.000 description 16
- 238000012856 packing Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 241000219782 Sesbania Species 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 238000005429 filling process Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000011949 solid catalyst Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910000954 Medium-carbon steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
-
- 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
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/82—Phosphates
- B01J29/84—Aluminophosphates containing other elements, e.g. metals, boron
- B01J29/85—Silicoaluminophosphates [SAPO compounds]
-
- 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
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Catalysts (AREA)
Abstract
The invention provides an enhancer for enhancing the adhesion capability of a catalyst-loaded silicon-aluminum-phosphorus molecular sieve and a filling device suitable for the catalyst. The reinforcing agent mainly comprises a main agent, an auxiliary agent and an additive, wherein the main agent mainly comprises aluminum sol or silica sol, ammonia water, hydrochloric acid or nitric acid and desalted water; the auxiliary agent mainly comprises polyvinyl alcohol, carboxymethyl cellulose, dextrin or sesbania powder; the additive mainly comprises isocyanate, alkylphenol ethoxylates or dioctyl phthalate or vinyl acetate resin. The reinforcing agent can enhance the adhesion capability of the silicon-aluminum-phosphorus molecular sieve on the cordierite carrier, so that the silicon-aluminum-phosphorus molecular sieve adsorbed on the whole catalyst is more, and higher conversion rate and selectivity are achieved on the filled device. The filling device can improve the filling amount of the whole catalyst by 20-40%, so that the resistance of the whole catalyst in the furnace tube is basically consistent, and no blockage and no bridging phenomenon occur.
Description
Technical Field
The invention relates to the field of chemical catalyst filling, in particular to an enhancer for enhancing the adhesion capability of a catalyst-loaded silicon-aluminum-phosphorus molecular sieve and a filling device suitable for the catalyst.
Background
With the development of the large-scale and technological level of the catalytic reactor, the filling technology and equipment of the solid catalyst are becoming more and more important matters for the engineering development of the catalyst. The method of filling the reactor with the solid catalyst is generally: catalyst is charged from the reactor inlet and is loaded by free fall. The catalyst loading density is different due to different factors such as the falling speed of the catalyst, the loading time and the like, the falling speed is high or the loading time is long, the loading density of the catalyst is high, the falling speed is low or the loading time is short, and the loading density of the catalyst is low. Therefore, the pressure drop generated by the catalyst bed is different due to different filling, and meanwhile, the catalyst falls quickly and easily to generate physical impact so as to crack or generate powder. And will have a certain influence on the experimental result.
The packing modes can be generally classified into normal packing and dense phase packing. The common filling is called lyophobic filling, cloth bag filling and dilute phase filling, and no external driving force is used in the filling process to improve the filling quantity and the filling uniformity of the catalyst. The method is simple and easy to operate, almost no special training is needed on personnel, no patent technology is needed on equipment, and therefore the method is adopted by a plurality of domestic enterprises. The dense phase filling can improve the treatment capacity, has small airspeed and long running time of the device, has large filling bulk density, compact filling and large filling quantity, and can generally fill more catalyst with 10-25 percent of the weight than the common filling method. Since the catalyst particles are regularly arranged in the cross section of the reactor during the filling process, the filling density of the catalyst particles along the longitudinal and radial directions of the reactor is very uniform. Dense phase packing has the following advantages: the reactor can be filled with a catalyst, so that the processing capacity is improved, the period is prolonged, and the product quality is improved; when the treatment capacity is the same, the dense-phase filling operation period is longer; the catalyst bed is filled uniformly and tightly, and phenomena such as collapse, channeling and the like of the bed can be avoided, so that local overheating phenomenon is avoided, the radial temperature of the catalyst layer is uniform, and the selectivity of the reaction can be improved. Thus, dense phase packing is more promising than normal packing.
If the catalyst is unevenly packed, the catalyst is easy to cause short circuit or bed subsidence, so that the material and temperature distribution in the reactor are uneven, the contact time of the material and the catalyst is uneven, the reaction pressure drop is uneven, and the product quality and the service life of the catalyst are affected. The core of the catalyst filling technology is to realize uniform filling of the catalyst in the filling process and improve the stacking density and the filling efficiency. At present, a plurality of companies at home and abroad develop proprietary filling technology, and have obtained favorable progress. However, many technical problems of catalyst loading remain to be solved.
The method of loading a solid catalyst in a fixed bed reactor is generally: catalyst is charged from the reactor inlet and is loaded by free fall. The catalyst loading density is different due to different factors such as the falling speed of the catalyst, the loading time and the like, the falling speed is high or the loading time is long, the loading density of the catalyst is high, the falling speed is low or the loading time is short, and the loading density of the catalyst is low. Therefore, different filling and different pressure drops generated by the catalyst bed layers tend to have certain influence on experimental results. At the same time, the catalyst falls at a high rate and is also prone to physical impact, causing cracking or powder formation.
Disclosure of Invention
In view of the above, the present invention aims to provide an enhancer for enhancing the adhesion capability of a catalyst-supported silicoaluminophosphate molecular sieve and a loading device suitable for the catalyst.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
the reinforcing agent for reinforcing the adhesive capacity of the catalyst-loaded silicon-aluminum-phosphorus molecular sieve comprises a main agent, an auxiliary agent and an additive, wherein the main agent is prepared from the following components in percentage by mass: auxiliary agent: additive= (81-90): (8-18) 1), wherein the main agent comprises sol, ammonia water, acid and desalted water, and the preparation mass ratio is (70-84): (15-26): 1: (100-500); the auxiliary agent comprises polyvinyl alcohol, carboxymethyl cellulose and dextrin, and the preparation mass ratio of the auxiliary agent is (20-30): (40-50): (20-40); the additive mainly comprises cyanate and alkylphenol polyoxyethylene, and the preparation mass ratio of the additive is (90-95): (5-10).
Preferably, the sol is aluminum sol or silica sol, and the acid is hydrochloric acid or nitric acid.
Preferably, the dextrin is replaced by sesbania powder, and the alkylphenol polyoxyethylene is replaced by dioctyl phthalate or vinyl acetate resin.
The synthesis method of the reinforcing agent comprises the following steps: step A1: selecting a 304 stainless steel reaction vessel A, putting a proper amount of desalted water, heating the reaction vessel A to 30-60 ℃ and preserving heat, then adding all substances according to the sequence and proportion of the components of the main agent, stirring for 10-30min after each substance is added, and stirring all the substances all the time after the addition is finished;
step A2: selecting a 304 stainless steel reaction vessel B, keeping the temperature at 20-40 ℃, and putting the components into an auxiliary agent for uniformly mixing;
step A3: adding the auxiliary agent which is uniformly stirred in the reaction vessel B into the stirring reaction vessel A, and continuously stirring for 2-4h;
step A4: and (3) selecting a 304 stainless steel reaction vessel C, keeping the temperature at 20-40 ℃, adding all components in the additive, stirring for 10-20min, adding the mixture into the reaction vessel A stirred in the step A3, keeping the temperature at 20-50 ℃, and continuously stirring the slurry in the reaction vessel A for 1-4h to obtain the reinforcing agent.
The method for preparing the catalyst loaded with the silicon-aluminum-phosphorus molecular sieve with higher content by using the reinforcing agent comprises the following steps: step B1: taking cordierite ceramic honeycomb as a carrier, soaking in dilute nitric acid for 0.5-3h, taking out, removing redundant dilute nitric acid in the pore channels of the cordierite ceramic honeycomb carrier, and then drying and roasting;
step B2: placing the cordierite ceramic honeycomb carrier treated in the step B1 into a prepared reinforcing agent for soaking for 1-3 hours, then taking out, removing redundant slurry in pore channels of the cordierite ceramic honeycomb carrier, and then drying and roasting;
step B3: and B2, placing the cordierite ceramic honeycomb carrier treated in the step B2 into reaction slurry prepared by the silicon-aluminum-phosphorus molecular sieve for synthesis operation, wherein the silicon-aluminum-phosphorus molecular sieve generated in the reaction process is attached to the surface and the pore canal of the cordierite ceramic honeycomb carrier, taking out the cordierite ceramic honeycomb carrier after the reaction is finished, removing redundant slurry in the pore canal, drying and roasting to obtain the monolithic catalyst loaded with the silicon-aluminum-phosphorus molecular sieve with higher content.
Further, the preparation method of the reaction slurry prepared by the silicon-aluminum-phosphorus molecular sieve in the step B3 comprises the following steps: mixing silica sol, pseudo-boehmite, phosphoric acid, triethylamine and desalted water at 10-40 ℃ under stirring to obtain initial slurry of the silicon-aluminum-phosphorus molecular sieve, and carrying out hydrothermal crystallization on the slurry at 120-220 ℃ for 48-72h, wherein the proportion of the silica sol to the pseudo-boehmite to the phosphoric acid to the triethylamine to the desalted water is (0.1-2): 1: (0.5-2): (0.5-4): (100-200).
The utility model provides a loading attachment suitable for catalyst that above-mentioned method was prepared, includes furnace body, collet, conveyer, metal rope, main shaft and auxiliary axle, the collet is placed in the furnace body through the mode of can pegging graft, be round ascending slot all around of furnace body bottom, the center of collet is protruding downwards, the edge of collet is round ascending slot, peg graft each other with furnace body bottom ascending slot, the outside above the furnace body is located to the main shaft, the main shaft is equipped with two, and vertical arrangement sets up, auxiliary axle is equipped with two, auxiliary axle articulates in the axostylus axostyle, the axostylus axostyle articulates in the furnace body inner wall, the furnace body inner wall is equipped with corresponding embedded groove that is used for axostylus axostyle and auxiliary axle to place, auxiliary axle is placed to the horizontality owing to the spacing of embedded groove lower terminal surface under the natural state, when the collet is lifted from bottom to top, two auxiliary axles are located the opposite both sides near the furnace body bottom respectively, the metal rope twines one of main shaft, two auxiliary axles and another main shaft in proper order, two auxiliary axle and main shaft, two auxiliary axle and another main shaft are located on the metal rope conveyer barb of main shaft, the metal rope is located on the main shaft of the reel that the equal distance is located from one end of main shaft to the reel.
The application method of the filling device comprises the following steps: step C1: the wooden stick is used for binding cloth to clean the interior of the furnace body, impurities in the furnace body are removed, and then the furnace body is aired for 4-8 hours, so that the interior of the furnace body is kept in a thoroughly dry state;
step C2: placing the collet at the bottom of the furnace body, and clamping the collet on a slot at the bottom of the furnace body to ensure that the collet and the slot are tightly contacted without leaving a gap;
step C3: initially the metal cords are wrapped around one of the main axles with the other end of the metal cords connected to the other main axle;
step C4: the catalyst is conveyed into the furnace body through the conveyor, the metal ropes are gradually and completely wound on the other main wheel shaft from the main wheel shaft, and gaps among the catalysts are gradually eliminated through the conveying of the metal ropes by the barbs of the metal ropes, so that the catalyst is filled and compacted more;
step C5: withdrawing the metal rope and the conveyor, and tightly connecting the upper end of the furnace body with the reaction system to finish the filling operation of the whole catalyst;
step C6: after the reaction, separating the reaction system, sleeving a collecting bag at the upper end of the furnace body, and introducing compressed air upwards from the bottom outside the furnace body when discharging the catalyst in the furnace body, wherein the bottom support is lifted, and the whole catalyst enters the collecting bag along the upper end of the furnace body.
Further, the linear speed of the main wheel shaft is 0.3 to 0.6 times of the conveying speed of the conveyor.
Further, the filling height of the whole catalyst is 80-95% of the height of the furnace body.
Compared with the prior art, the reinforcing agent for reinforcing the adhesion capability of the catalyst-loaded silicon-aluminum-phosphorus molecular sieve and the filling device suitable for the catalyst have the following advantages: the reinforcing agent can enable more silicon-aluminum-phosphorus molecular sieves to be attached to a cordierite carrier, the mass of the silicon-aluminum-phosphorus molecular sieves attached to the cordierite carrier by using silica sol conventionally is 15-21%, and after the reinforcing agent is used, the mass of the silicon-aluminum-phosphorus molecular sieves attached to the cordierite carrier can reach 20-30%, so that the catalytic performance of the integral catalyst on the reaction is greatly improved, the conversion rate and the selectivity of the integral catalyst are improved, and the service life of the integral catalyst is prolonged.
By using the filling device to carry out filling operation on the whole catalyst, the filling amount of the whole catalyst can be improved by 20-40%, so that the resistance of the whole catalyst in the furnace tube is basically consistent, and no blocking and bridging phenomena occur. After the filling device is used for filling, the reaction materials uniformly react in the furnace tube, and the service life of the furnace tube can be prolonged. The device has high automation degree and is convenient for industrialized popularization.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
FIG. 1 is a schematic view of a filling device according to the present invention;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
reference numerals illustrate:
1-a main wheel axle; 2-a furnace body; 3-an auxiliary wheel axle; 4-a bottom bracket; 5-metal cords; 6-barb; 7-a conveyor; 8-embedding grooves; 9-shaft lever.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
Example 1
The reinforcing agent for reinforcing the adhesive capacity of the catalyst-loaded silicon-aluminum-phosphorus molecular sieve comprises a main agent, an auxiliary agent and an additive, wherein the main agent is prepared from the following components in percentage by mass: auxiliary agent: additive = 81:8:1, wherein the main agent comprises aluminum sol, ammonia water, hydrochloric acid and desalted water, and the preparation mass ratio is 70:15:1:100; the auxiliary agent comprises polyvinyl alcohol, carboxymethyl cellulose and dextrin, and the preparation mass ratio of the auxiliary agent is 20:40:20, a step of; the additive mainly comprises cyanate and alkylphenol polyoxyethylene, and the preparation mass ratio of the additive is 90:5.
the synthesis method of the reinforcing agent comprises the following steps: step A1: selecting a 304 stainless steel reaction vessel A, putting a proper amount of desalted water, heating the reaction vessel A to 30 ℃ and preserving heat, then adding all substances according to the sequence and proportion of the components of the main agent, stirring for 10min after each substance is added, and stirring all the substances until all the substances are added;
step A2: selecting a 304 stainless steel reaction vessel B, keeping the temperature at 20 ℃, and putting the components into an auxiliary agent for uniformly mixing;
step A3: adding the auxiliary agent which is uniformly stirred in the reaction vessel B into the stirring reaction vessel A, and continuously stirring for 2 hours;
step A4: and (3) selecting a 304 stainless steel reaction vessel C, keeping the temperature at 20 ℃, adding all components in the additive, stirring for 10min, adding the mixture into the reaction vessel A stirred in the step A3, keeping the temperature at 20 ℃, and continuously stirring the slurry in the reaction vessel A for 1h to obtain the reinforcing agent.
The method for preparing the catalyst loaded with the silicon-aluminum-phosphorus molecular sieve with higher content by using the reinforcing agent comprises the following steps: step B1: taking cordierite ceramic honeycomb as a carrier, soaking in dilute nitric acid for 0.5h, taking out, removing excessive dilute nitric acid in the pore channels of the cordierite ceramic honeycomb carrier, and then drying and roasting;
step B2: placing the cordierite ceramic honeycomb carrier treated in the step B1 into a prepared reinforcing agent for soaking for 1h, taking out, removing redundant slurry in pore channels of the cordierite ceramic honeycomb carrier, and then drying and roasting;
step B3: and B2, placing the cordierite ceramic honeycomb carrier treated in the step B2 into reaction slurry prepared by the silicon-aluminum-phosphorus molecular sieve for synthesis operation, wherein the silicon-aluminum-phosphorus molecular sieve generated in the reaction process is attached to the surface and the pore canal of the cordierite ceramic honeycomb carrier, taking out the cordierite ceramic honeycomb carrier after the reaction is finished, removing redundant slurry in the pore canal, drying and roasting to obtain the monolithic catalyst loaded with the silicon-aluminum-phosphorus molecular sieve with higher content.
The preparation method of the reaction slurry prepared by the silicon-aluminum-phosphorus molecular sieve in the step B3 comprises the following steps: mixing silica sol, pseudo-boehmite, phosphoric acid, triethylamine and desalted water at 10-40 ℃ under stirring to obtain initial slurry of the silicon-aluminum-phosphorus molecular sieve, and carrying out hydrothermal crystallization on the slurry at 120 ℃ for 48 hours, wherein the proportion of the silica sol, the pseudo-boehmite, the phosphoric acid, the triethylamine and the desalted water is 0.1:1:0.5:0.5:100.
example 2
The reinforcing agent for reinforcing the adhesive capacity of the catalyst-loaded silicon-aluminum-phosphorus molecular sieve comprises a main agent, an auxiliary agent and an additive, wherein the main agent is prepared from the following components in percentage by mass: auxiliary agent: additive = 90:18:1, wherein the main agent comprises silica sol, ammonia water, nitric acid and desalted water, and the preparation mass ratio is 84:26:1:500; the auxiliary agent comprises polyvinyl alcohol, carboxymethyl cellulose and sesbania powder, and the preparation mass ratio of the auxiliary agent is 30:50:40, a step of performing a; the additive mainly comprises cyanate and alkylphenol polyoxyethylene, and the preparation mass ratio is 95:10.
the synthesis method of the reinforcing agent comprises the following steps: step A1: selecting a 304 stainless steel reaction vessel A, putting a proper amount of desalted water, heating the reaction vessel A to 60 ℃ and preserving heat, then adding all substances according to the sequence and proportion of the components of the main agent, stirring for 30min after each substance is added, and stirring all the substances until all the substances are added;
step A2: selecting a 304 stainless steel reaction vessel B, keeping the temperature at 40 ℃, and putting the components into an auxiliary agent for uniformly mixing;
step A3: adding the auxiliary agent which is uniformly stirred in the reaction vessel B into the stirring reaction vessel A, and continuously stirring for 4 hours;
step A4: and (3) selecting a 304 stainless steel reaction vessel C, keeping the temperature at 40 ℃, adding all components in the additive, stirring for 20min, adding the mixture into the reaction vessel A stirred in the step A3, keeping the temperature at 50 ℃, and continuously stirring the slurry in the reaction vessel A for 4h to obtain the reinforcing agent.
The method for preparing the catalyst loaded with the silicon-aluminum-phosphorus molecular sieve with higher content by using the reinforcing agent comprises the following steps: step B1: taking cordierite ceramic honeycomb as a carrier, soaking in dilute nitric acid for 3 hours, taking out, removing excessive dilute nitric acid in the pore channels of the cordierite ceramic honeycomb carrier, and then drying and roasting;
step B2: placing the cordierite ceramic honeycomb carrier treated in the step B1 into a prepared reinforcing agent for soaking for 3 hours, taking out, removing redundant slurry in pore channels of the cordierite ceramic honeycomb carrier, and then drying and roasting;
step B3: and B2, placing the cordierite ceramic honeycomb carrier treated in the step B2 into reaction slurry prepared by the silicon-aluminum-phosphorus molecular sieve for synthesis operation, wherein the silicon-aluminum-phosphorus molecular sieve generated in the reaction process is attached to the surface and the pore canal of the cordierite ceramic honeycomb carrier, taking out the cordierite ceramic honeycomb carrier after the reaction is finished, removing redundant slurry in the pore canal, drying and roasting to obtain the monolithic catalyst loaded with the silicon-aluminum-phosphorus molecular sieve with higher content.
The preparation method of the reaction slurry prepared by the silicon-aluminum-phosphorus molecular sieve in the step B3 comprises the following steps: mixing silica sol, pseudo-boehmite, phosphoric acid, triethylamine and desalted water at 40 ℃ under stirring to prepare initial slurry of the silicon-aluminum-phosphorus molecular sieve, and carrying out hydrothermal crystallization on the slurry at 220 ℃ for 72 hours, wherein the ratio of the silica sol to the pseudo-boehmite to the phosphoric acid to the triethylamine to the desalted water is 2:1:2:4:200.
example 3
The reinforcing agent for reinforcing the adhesive capacity of the catalyst-loaded silicon-aluminum-phosphorus molecular sieve comprises a main agent, an auxiliary agent and an additive, wherein the main agent is prepared from the following components in percentage by mass: auxiliary agent: additive = 85:12:1, wherein the main agent comprises aluminum sol, ammonia water, nitric acid and desalted water, and the preparation mass ratio is 75:20:1:200; the auxiliary agent comprises polyvinyl alcohol, carboxymethyl cellulose and dextrin, and the preparation mass ratio is 25:45:30; the additive mainly comprises cyanate and dioctyl phthalate, and the preparation mass ratio is 92:8.
the synthesis method of the reinforcing agent comprises the following steps: step A1: selecting a 304 stainless steel reaction vessel A, putting a proper amount of desalted water, heating the reaction vessel A to 45 ℃ and preserving heat, then adding all substances according to the sequence and proportion of the components of the main agent, stirring for 20min after each substance is added, and stirring all the substances until all the substances are added;
step A2: selecting a 304 stainless steel reaction vessel B, keeping the temperature at 30 ℃, and putting the components into an auxiliary agent for uniformly mixing;
step A3: adding the auxiliary agent which is uniformly stirred in the reaction vessel B into the stirring reaction vessel A, and continuously stirring for 3 hours;
step A4: and (3) selecting a 304 stainless steel reaction vessel C, keeping the temperature at 30 ℃, adding all components in the additive, stirring for 15min, adding the mixture into the reaction vessel A stirred in the step A3, keeping the temperature at 30 ℃, and continuously stirring the slurry in the reaction vessel A for 2h to obtain the reinforcing agent.
The method for preparing the catalyst loaded with the silicon-aluminum-phosphorus molecular sieve with higher content by using the reinforcing agent comprises the following steps: step B1: taking cordierite ceramic honeycomb as a carrier, soaking in dilute nitric acid for 2 hours, taking out, removing excessive dilute nitric acid in the pore channels of the cordierite ceramic honeycomb carrier, and then drying and roasting;
step B2: placing the cordierite ceramic honeycomb carrier treated in the step B1 into a prepared reinforcing agent for soaking for 2 hours, taking out, removing redundant slurry in pore channels of the cordierite ceramic honeycomb carrier, and then drying and roasting;
step B3: and B2, placing the cordierite ceramic honeycomb carrier treated in the step B2 into reaction slurry prepared by the silicon-aluminum-phosphorus molecular sieve for synthesis operation, wherein the silicon-aluminum-phosphorus molecular sieve generated in the reaction process is attached to the surface and the pore canal of the cordierite ceramic honeycomb carrier, taking out the cordierite ceramic honeycomb carrier after the reaction is finished, removing redundant slurry in the pore canal, drying and roasting to obtain the monolithic catalyst loaded with the silicon-aluminum-phosphorus molecular sieve with higher content.
The preparation method of the reaction slurry prepared by the silicon-aluminum-phosphorus molecular sieve in the step B3 comprises the following steps: mixing silica sol, pseudo-boehmite, phosphoric acid, triethylamine and desalted water at 20 ℃ under stirring to prepare initial slurry of the silicon-aluminum-phosphorus molecular sieve, and carrying out hydrothermal crystallization on the slurry at 160 ℃ for 72 hours, wherein the ratio of the silica sol to the pseudo-boehmite to the phosphoric acid to the triethylamine to the desalted water is 1:1:1.5:2:150.
example 4
The reinforcing agent for reinforcing the adhesive capacity of the catalyst-loaded silicon-aluminum-phosphorus molecular sieve comprises a main agent, an auxiliary agent and an additive, wherein the main agent is prepared from the following components in percentage by mass: auxiliary agent: additive = 90:15:1, wherein the main agent comprises silica sol, ammonia water, hydrochloric acid and desalted water, and the preparation mass ratio is 84:20:1:100; the auxiliary agent comprises polyvinyl alcohol, carboxymethyl cellulose and sesbania powder, and the preparation mass ratio is 25:40:35; the additive mainly comprises cyanate and vinyl acetate resin, and the preparation mass ratio of the cyanate to the vinyl acetate resin is 90:5.
the synthesis method of the reinforcing agent comprises the following steps: step A1: selecting a 304 stainless steel reaction vessel A, putting a proper amount of desalted water, heating the reaction vessel A to 60 ℃ and preserving heat, then adding all substances according to the sequence and proportion of the components of the main agent, stirring for 10min after each substance is added, and stirring all the substances until all the substances are added;
step A2: selecting a 304 stainless steel reaction vessel B, keeping the temperature at 40 ℃, and putting the components into an auxiliary agent for uniformly mixing;
step A3: adding the auxiliary agent which is uniformly stirred in the reaction vessel B into the stirring reaction vessel A, and continuously stirring for 2 hours;
step A4: and (3) selecting a 304 stainless steel reaction vessel C, keeping the temperature at 30 ℃, adding all components in the additive, stirring for 15min, adding the mixture into the reaction vessel A stirred in the step A3, keeping the temperature at 50 ℃, and continuously stirring the slurry in the reaction vessel A for 3h to obtain the reinforcing agent.
The method for preparing the catalyst loaded with the silicon-aluminum-phosphorus molecular sieve with higher content by using the reinforcing agent comprises the following steps: step B1: taking cordierite ceramic honeycomb as a carrier, soaking in dilute nitric acid for 1h, taking out, removing excessive dilute nitric acid in the pore channels of the cordierite ceramic honeycomb carrier, and then drying and roasting;
step B2: placing the cordierite ceramic honeycomb carrier treated in the step B1 into a prepared reinforcing agent for soaking for 1h, taking out, removing redundant slurry in pore channels of the cordierite ceramic honeycomb carrier, and then drying and roasting;
step B3: and B2, placing the cordierite ceramic honeycomb carrier treated in the step B2 into reaction slurry prepared by the silicon-aluminum-phosphorus molecular sieve for synthesis operation, wherein the silicon-aluminum-phosphorus molecular sieve generated in the reaction process is attached to the surface and the pore canal of the cordierite ceramic honeycomb carrier, taking out the cordierite ceramic honeycomb carrier after the reaction is finished, removing redundant slurry in the pore canal, drying and roasting to obtain the monolithic catalyst loaded with the silicon-aluminum-phosphorus molecular sieve with higher content.
The preparation method of the reaction slurry prepared by the silicon-aluminum-phosphorus molecular sieve in the step B3 comprises the following steps: mixing silica sol, pseudo-boehmite, phosphoric acid, triethylamine and desalted water at 40 ℃ under stirring to prepare initial slurry of the silicon-aluminum-phosphorus molecular sieve, and carrying out hydrothermal crystallization on the slurry at 220 ℃ for 72 hours, wherein the ratio of the silica sol to the pseudo-boehmite to the phosphoric acid to the triethylamine to the desalted water is 2:1:0.5:0.5:150.
example 5
As shown in figures 1-2, a filling device for the catalyst prepared by the method comprises a furnace body 2, a bottom support 4, a conveyor 7, metal ropes 5, a main wheel shaft 1 and an auxiliary wheel shaft 3, wherein the bottom support 4 is placed in the furnace body 2 in an insertable manner, a circle of upward slots are formed in the periphery of the bottom of the furnace body 2, the center of the bottom support 4 is downward convex, a circle of downward slots are formed in the edge of the bottom support 4 and are mutually inserted with the upward slots in the bottom of the furnace body 2, the main wheel shaft 1 is arranged on the outer side above the furnace body 2, the main wheel shafts 1 are arranged in two and vertically arranged, the auxiliary wheel shafts 3 are arranged in two, the auxiliary wheel shafts 3 are hinged to shaft rods 9, the shaft rods 9 are hinged to the inner wall of the furnace body 2, corresponding embedded grooves 8 for placing the shaft rods 9 and the auxiliary wheel shafts 3 are formed in the inner wall of the furnace body 2, the auxiliary wheel shaft 3 is in a natural state, the shaft rod 9 is placed down to a horizontal state due to the limit of the lower end face of the embedded groove 8, when the bottom support 4 is lifted up from bottom to top, the bottom support 4 drives the shaft rod 9 and the auxiliary wheel shaft 3 to be turned upwards to be embedded in the embedded groove 8, the two auxiliary wheel shafts 3 are respectively positioned at two opposite sides close to the bottom of the furnace body 2, the metal rope 5 is sequentially wound on one main wheel shaft 1, the two auxiliary wheel shafts 3 and the other main wheel shaft 1, the rope loop of the metal rope 5 is gradually conveyed and wound on the other main wheel shaft 1 from the main wheel shaft 1, the conveyor 7 is arranged at the edge of the upper end of the furnace body 2 and used for conveying catalysts into the furnace body 2, and the metal rope 5 is provided with equally-spaced barbs 6.
The application method of the filling device comprises the following steps: step C1: the wooden stick is used for binding cloth to clean the interior of the furnace body 2, impurities in the furnace body 2 are removed, and then the furnace body 2 is aired for 4 to 8 hours, so that the interior of the furnace body 2 is kept in a thoroughly dry state;
step C2: putting the bottom support 4 at the bottom of the furnace body 2 and clamping the bottom support on a slot at the bottom of the furnace body 2 to ensure that the bottom support and the slot are tightly contacted without leaving a gap;
step C3: initially the metal cord 5 is wound around one of the main wheel shafts 1, so that the other end of the metal cord 5 is connected to the other main wheel shaft 1;
step C4: the catalyst is conveyed into the furnace body 2 through the conveyor 7, the metal ropes 5 are gradually and completely wound on the other main wheel shaft 1 from one main wheel shaft 1, and gaps among the catalysts are gradually eliminated through the barbs 6 of the metal ropes 5 by conveying, so that the catalyst is filled and compacted more;
step C5: withdrawing the metal rope 5 and the conveyor 7, and tightly connecting the upper end of the furnace body 2 with the reaction system to finish the filling operation of the whole catalyst;
step C6: after the reaction, separating the reaction system, sleeving a collecting bag on the upper end of the furnace body 2, and introducing compressed air upwards from the bottom outside the furnace body 2 when discharging the catalyst in the furnace body 2, wherein the bottom support 4 ascends, and the whole catalyst enters the collecting bag along the upper end of the furnace body 2.
The metal rope 5 is an iron wire rope, and the length of the metal rope 5 is about 6.4-9.5 times of the height of the furnace body 2. The linear speed of the main wheel shaft 1 is 0.3-0.6 times of the conveying speed of the conveyor 7. The filling height of the integral catalyst is 80-95% of the height of the furnace body 2.
The running directions of the two main wheel shafts 1 are opposite, namely, when the main wheel shaft 1 at the lower end runs anticlockwise, the main wheel shaft 1 at the upper end runs clockwise. The metal ropes 5 are distributed in a ring shape in the furnace body 2, namely, the metal ropes 5 extend out of one main wheel shaft 1, then extend into the bottom of the furnace body 2 from one side of the furnace body 2, then extend out of the furnace body 2 upwards in a turnover mode, and then are wound on the other main wheel shaft 1. The metal rope 5 is provided with a node at intervals of 10-20 cm. The nodes have a length of about 1-2cm and a number of 6-10 "barb 6" structures. The metal rope 5 is made of all-carbon material and is softer in texture. The material of the barb 6 structure is high-quality 40# to 45# medium carbon steel, and the texture is very hard.
The diameter of the whole catalyst suitable for the filling device is 1/10 or less of the diameter of the furnace tube.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (5)
1. An enhancer for enhancing the adhesion capability of a catalyst-supported silicon-aluminum-phosphorus molecular sieve, which is characterized in that: comprises a main agent, an auxiliary agent and an additive, wherein the preparation mass ratio of the main agent is as follows: auxiliary agent: additive= (81-90): (8-18) 1), wherein the main agent comprises sol, ammonia water, acid and desalted water, and the preparation mass ratio is (70-84): (15-26): 1: (100-500); the auxiliary agent comprises polyvinyl alcohol, carboxymethyl cellulose and dextrin, and the preparation mass ratio of the auxiliary agent is (20-30): (40-50): (20-40); the additive mainly comprises cyanate and alkylphenol polyoxyethylene, and the preparation mass ratio of the additive is (90-95): (5-10),
the synthesis method of the reinforcing agent comprises the following steps: step A1: selecting a 304 stainless steel reaction vessel A, putting a proper amount of desalted water, heating the reaction vessel A to 30-60 ℃ and preserving heat, then adding all substances according to the sequence and proportion of the components of the main agent, stirring for 10-30min after each substance is added, and stirring all the substances all the time after the addition is finished;
step A2: selecting a 304 stainless steel reaction vessel B, keeping the temperature at 20-40 ℃, and putting the components into an auxiliary agent for uniformly mixing;
step A3: adding the auxiliary agent which is uniformly stirred in the reaction vessel B into the stirring reaction vessel A, and continuously stirring for 2-4h;
step A4: and (3) selecting a 304 stainless steel reaction vessel C, keeping the temperature at 20-40 ℃, adding all components in the additive, stirring for 10-20min, adding the mixture into the reaction vessel A stirred in the step A3, keeping the temperature at 20-50 ℃, and continuously stirring the slurry in the reaction vessel A for 1-4h to obtain the reinforcing agent.
2. The enhancer of claim 1, wherein: the sol is aluminum sol or silica sol, and the acid is hydrochloric acid or nitric acid.
3. The enhancer of claim 1, wherein: the dextrin is replaced by sesbania powder, and the alkylphenol polyoxyethylene ether is replaced by dioctyl phthalate or vinyl acetate resin.
4. A method for preparing a catalyst loaded with a higher content of a silicoaluminophosphate molecular sieve using the enhancer of claim 1, characterized by: the method comprises the following steps: step B1: taking cordierite ceramic honeycomb as a carrier, soaking in dilute nitric acid for 0.5-3h, taking out, removing redundant dilute nitric acid in the pore channels of the cordierite ceramic honeycomb carrier, and then drying and roasting;
step B2: placing the cordierite ceramic honeycomb carrier treated in the step B1 into a prepared reinforcing agent for soaking for 1-3 hours, then taking out, removing redundant slurry in pore channels of the cordierite ceramic honeycomb carrier, and then drying and roasting;
step B3: and B2, placing the cordierite ceramic honeycomb carrier treated in the step B2 into reaction slurry prepared by the silicon-aluminum-phosphorus molecular sieve for synthesis operation, wherein the silicon-aluminum-phosphorus molecular sieve generated in the reaction process is attached to the surface and the pore canal of the cordierite ceramic honeycomb carrier, taking out the cordierite ceramic honeycomb carrier after the reaction is finished, removing redundant slurry in the pore canal, drying and roasting to obtain the monolithic catalyst loaded with the silicon-aluminum-phosphorus molecular sieve with higher content.
5. The method according to claim 4, wherein: the preparation method of the reaction slurry prepared by the silicon-aluminum-phosphorus molecular sieve in the step B3 comprises the following steps: mixing silica sol, pseudo-boehmite, phosphoric acid, triethylamine and desalted water at 10-40 ℃ under stirring to obtain initial slurry of the silicon-aluminum-phosphorus molecular sieve, and carrying out hydrothermal crystallization on the slurry at 120-220 ℃ for 48-72h, wherein the proportion of the silica sol to the pseudo-boehmite to the phosphoric acid to the triethylamine to the desalted water is (0.1-2): 1: (0.5-2): (0.5-4): (100-200).
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| CN202310116768.4A CN115999450A (en) | 2020-08-14 | 2020-08-14 | Filling device of catalyst |
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| CN104492473A (en) * | 2014-12-30 | 2015-04-08 | 华东理工大学 | Molecular sieve-coating cerium oxide composite material and preparation method thereof |
| CN106281050A (en) * | 2016-08-10 | 2017-01-04 | 无锡威孚环保催化剂有限公司 | A kind of preparation method and applications of molecular sieve SCR catalyst binding agent |
| CN107497473A (en) * | 2017-07-20 | 2017-12-22 | 沈阳化工大学 | A kind of Y molecular sieve method for preparing catalyst using cordierite as carrier |
| CN108545759A (en) * | 2018-04-18 | 2018-09-18 | 中国天辰工程有限公司 | A kind of preparation method and its evaluating apparatus of the sial phosphorus molecular sieve of modification |
| CN108816224A (en) * | 2018-06-26 | 2018-11-16 | 中国天辰工程有限公司 | A kind of catalyst and preparation method handling the exhaust gas in the roasting of sial phosphorus molecular sieve |
| CN110981458A (en) * | 2019-12-27 | 2020-04-10 | 中国天辰工程有限公司 | Device for containing silicon-aluminum-phosphorus molecular sieve and preparation method thereof |
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| CN100493715C (en) * | 2006-10-16 | 2009-06-03 | 华东理工大学 | Preparation method of active coating of integral catalyst |
| CN105622079B (en) * | 2015-12-25 | 2016-10-19 | 山东硅元新型材料有限责任公司 | The preparation method of molecular screen membrane supporter |
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| CN104492473A (en) * | 2014-12-30 | 2015-04-08 | 华东理工大学 | Molecular sieve-coating cerium oxide composite material and preparation method thereof |
| CN106281050A (en) * | 2016-08-10 | 2017-01-04 | 无锡威孚环保催化剂有限公司 | A kind of preparation method and applications of molecular sieve SCR catalyst binding agent |
| CN107497473A (en) * | 2017-07-20 | 2017-12-22 | 沈阳化工大学 | A kind of Y molecular sieve method for preparing catalyst using cordierite as carrier |
| CN108545759A (en) * | 2018-04-18 | 2018-09-18 | 中国天辰工程有限公司 | A kind of preparation method and its evaluating apparatus of the sial phosphorus molecular sieve of modification |
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