Liquid state petroleum hydrocarbon normal temperature dearsenicating agent and preparation method thereof
A technology for liquid petroleum and arsenic removal agent, which is applied in the petroleum industry, refined hydrocarbon oil, etc., and can solve the problems of different design requirements and blanks.
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[0033] The present invention also provides a preparation method of the arsenic removal agent, which comprises loading the active component of the arsenic removal on the mesoporous molecular sieve, and then mixing and molding the mesoporous molecular sieve loaded with the active component and the auxiliary material for structure forming by a conventional method , and finally heat-treat the molded green body to form the arsenic removal agent.
[0034] In a preferred example, the preparation method comprises the steps of:
[0035] (i) Compounding the mesoporous molecular sieve with the active component precursor, wherein said mesoporous molecular sieve has an average pore diameter of about 2-50nm and a specific surface area of about 100m 2 / g~1000m 2 / g;
[0036](ii) adding a structure-forming agent for molding and drying;
[0037] (iii) heat treatment at about 200-700° C. for 0.5-12 hours to obtain the arsenic-removing agent.
[0038] Compared with the existing liquid petr...
Embodiment 1
[0045] Molecular sieve preparation
[0046] 300 mL of water and 1200 g of 2M hydrochloric acid aqueous solution were mixed, placed in a water bath at 40°C, heated and stirred. Add 40.0 grams of ethylene oxide-propylene oxide copolymer to this solution, (purchased from Aldrich Company, average molecular weight 4000, denoted as S123, the same below), continue to stir until the solution is a transparent solution, and then mix 91.0mLTEOS (tetraorthosilicate Ethyl ester) was added dropwise to the above solution. After the dropwise addition, the solution was stirred for 20 h to obtain a white turbid liquid. The mixture was added to a polytetrafluoroethylene-lined crystallizer and crystallized at 80°C for 24 hours. Hours. Filter the obtained solid matter with a glass sand core funnel and wash until there is no chloride ion in the filtrate. After heat treatment at 550° C. for 4 hours, a white powder is obtained. The obtained mesoporous molecular sieve material has an average pore dia...
Embodiment 2
[0052] Weigh 4.11g aluminum isopropoxide, measure 90.0mL tetraethyl orthosilicate and 100mL HCl solution (PH=1.5) and stir and mix with magnetic force to obtain solution A. Weigh 40.0 g of S123 and dissolve it in 1500 mL of HCl solution (PH=1.5) and mix with magnetic stirring to obtain solution B. Add solution A dropwise to solution B under a water bath and stirring condition at 40°C. After the dropwise addition, continue to stir for 5 hours, then transfer it to a polytetrafluoroethylene-lined crystallizer and crystallize at 100°C. After 48 hours, filter the obtained solid matter with a glass sand core funnel and wash until there is no chloride ion in the filtrate. After heat treatment at 550°C for 4 hours, a white powder is obtained. The average pore diameter of the obtained mesoporous molecular sieve material is 7±2nm, and the specific surface 500m 2 / g, the pore volume is 1.1mL / g.
[0053] Catalyst preparation and arsenic removal evaluation are the same as in Example 1, a...
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Abstract
Description
Claims
Application Information
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