Microsphere fluidizing reagent for start debugging of fluidized bed reactor and preparation method of microsphere fluidizing reagent

A technology of fluidized bed reactor and fluidizing agent, which is applied in the direction of chemical instruments and methods, chemical/physical processes, etc., can solve the problems of high cost and high production cost, and achieve improved anti-wear performance, cost saving, and good anti-wear performance effect

Inactive Publication Date: 2014-07-16
SHANGHAI XIANJIA CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the use of large quantities of more expensive strontium salts, barium salts, cesium salts, and pore volume regulators and high-cost silica sol and aluminum sol binders that must be applied in large quantities to ensure that the wear index is qualified, the overall production cost is very high. Preliminary Estimated not less than 15,000 yuan / ton

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Mix 0.4kg kaolin (dry basis), 0.4kg diatomaceous earth (dry basis), 50g limestone powder, 50g dolomite powder and 1.5kg water, then add 0.3kg water glass, high-speed shear for 30 minutes, and the slurry is aged at room temperature After 2h, spray granulation on a small spray granulation device to obtain microspheres. The microspheres were calcined at 1000°C for 2h to obtain sample MP1. The bulk density, wear index, and particle size distribution are listed in Table 1, and the results of MTO reaction are listed in Table 1. 2.

Embodiment 2

[0017] Mix 0.6kg halloysite (dry basis), 0.1kg sodium bentonite (dry basis), 0.1kg attapulgite (dry basis), 0.1kg calcite powder, 0.1kg magnesia powder and 1.5kg water, then add 0.2 pseudo-boehmite, add 0.1kg hydrochloric acid solution after high-speed shearing for 30 minutes, then high-speed shearing for 20 minutes, the slurry is aged for 2h at room temperature, and then spray granulated on a small spray granulation device to obtain microspheres. The balls were calcined at 1050°C for 1 hour to obtain sample MP2. The bulk density, wear index, and particle size distribution of MP2 are listed in Table 1.

Embodiment 3

[0019] Mix 0.6kg of kaolin (dry basis), 0.2kg of silico-alumina sodium oxide waste slag produced in the production of catalytic cracking catalysts, 0.1kg of chalk (dry basis), 50g of limestone powder and 1.5kg of water, and then add 0.15kg of pseudo-thin water For bauxite, add 50g of formic acid solution to peptize and mix after 30 minutes of high-speed shearing, then add 0.2kg of aluminum sol, high-speed shearing for 30 minutes, aging the slurry at room temperature for 3h, and then spray granulation on a small spray granulation device to obtain micro The microspheres were calcined at 800°C for 2 hours to obtain sample MP3. The bulk density, wear index, and particle size distribution of the microspheres are listed in Table 1, and the results of the MTO reaction are listed in Table 2.

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PUM

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Abstract

The invention relates to a microsphere fluidizing reagent for start debugging of a fluidized bed reactor and a preparation method of the microsphere fluidizing reagent. The microsphere fluidizing reagent comprises the following components in percentage by mass: 70-95 percent of SiO2 and Al2O3, 0.05-15 percent of CaO and MgO, 0.1-10 percent of Na2O and 0-5 percent of P2O5. The preparation method comprises the following steps: performing spray granulation on clay, silicon oxide, silicon aluminum oxides, limestone, dolomite, calcite, chalk soil and magnesite serving as matrixes and water glass, silica sol, alumina sol, silica-alumina gel, phosphorus-aluminum gel and pseudo-boehmite serving as adhesives, and roasting at the temperature of 800-1,200 DEG C. The cost is low.

Description

Technical field [0001] The invention relates to a microsphere fluidizing agent for commissioning a fluidized bed reactor and a preparation method thereof, in particular to a microsphere fluidizing agent for commissioning a fluidized bed reactor using expensive catalysts and adsorbents and The preparation method. Background technique [0002] Many industrial processes in modern petrochemical industry use fluidized bed reactors, such as the petroleum catalytic cracking process, the methanol-to-olefin process, the acrylonitrile production process, the Szorb process for catalytic gasoline adsorption desulfurization, and the light alkane dehydrogenation process. Except for the petroleum catalytic cracking process, the other processes all use expensive catalysts and adsorbents. In the early stage of its industrial plant, it was driven to stable operation, and it was inevitable that accidents such as catalyst and adsorbent pollution, running damage and other accidents would occur, caus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J8/24
Inventor 陆明全陆善祥陈辉支小斌万志保董小东
Owner SHANGHAI XIANJIA CHEM
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