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Clean preparation method of hydrotreating catalyst carrier

A catalyst carrier and carrier technology, which is applied in the direction of catalyst carrier, catalyst activation/preparation, physical/chemical process catalyst, etc., can solve the problems of polluting tail gas and emission, and achieve the effect of easy operation and simple preparation method

Active Publication Date: 2015-05-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention provides a catalyst carrier preparation method, which solves the problem of polluting tail gas emissions during the production process of the catalyst carrier by using a composite acid, and at the same time ensures the usability of the catalyst carrier

Method used

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Examples

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Comparison scheme
Effect test

preparation example Construction

[0021] Below in conjunction with the preparation method of hydrotreating catalyst carrier, specifically illustrate the process of the inventive method:

[0022] (1) Prepare an organic acid solution, weigh 1320g of oxalic acid (oxalic acid) white crystals, dissolve it in distilled water stirred at a constant temperature of 50°C, stir for 20 minutes, add 110mL of concentrated phosphoric acid, continue stirring for 20min, and prepare a transparent 5000mL mixture acid solution.

[0023] (2) Weigh 720g of small-pore alumina with a dry basis of 72.2%. Small-pore alumina is commercially available aluminum chloride method to prepare small-pore pseudo-boehmite, with a pore volume of 0.32mL / g and a specific surface area of ​​286m 2 / g, bulk density ~0.42g / cm 3 , the particle size is less than 180 mesh.

[0024] (3) Measure 1180mL of the mixed acid solution in step 1 and slowly add it into the mortar with small holes of alumina. After standing still for 20 minutes, stir evenly to form a...

example 1

[0028] Example 1 (reference scheme)

[0029] Take 1280mL dilute nitric acid solution (concentration: 4g nitric acid / 100mL), gradually add 720g small-pore pseudo-boehmite (SB powder produced in Germany), after standing still for 20min, stir evenly to form a white translucent paste, stand still at room temperature After 8h, the adhesive was prepared. Take 580g of macroporous alumina (produced by Tianjin Chenoya Company, with a pore volume of 0.80mL / g and a specific surface area of ​​295m 2 / g, dry basis 72.1%), add 6g of scallop powder, and add 562.9g of binder, roll for 30 minutes, add an appropriate amount of distilled water to make the mixture into a paste that can be extruded, extruded, extruded machine orifice 1.5mm clover in diameter. The wet strips were dried at 120°C for 4 hours, and then calcined at 550°C for 3 hours, numbered HT-1S.

example 2

[0030] Example 2 (reference scheme)

[0031] The dilute nitric acid solution in Example 1 was replaced with acetic acid solution (concentration: 13.2g acetic acid / 100mL), and the others were the same as in Example 1 to prepare a carrier, numbered HT-2S.

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Abstract

The invention relates to a clean preparation method of a hydrotreating catalyst carrier. The clean preparation method includes following steps: preparing a mixed acid solution, in which phosphorus acid and an organic acid are contained; mixing the mixed acid solution with an oxide precursor to prepare a binding agent; mixing the binding agent with catalyst carrier raw material powders; and performing a moulding process, a drying process and a roasting process to obtain the hydrotreating catalyst carrier. Compared with the prior art, the invention provides the clean preparation method of the hydrotreating catalyst carrier, by which a problem of polluting exhaust gas emission during the preparation process of the catalyst carrier is solved by employing the composite acid, and meanwhile performances of the catalyst carrier are ensured.

Description

technical field [0001] The invention relates to a preparation method of a loaded catalyst carrier, especially NO NO in the preparation process x Process for the preparation of vented hydrotreating catalyst supports. Background technique [0002] As the quality of crude oil becomes heavier and worse year by year, environmental protection regulations become increasingly strict, and the market demand for clean oil products continues to grow, making hydrogenation technology for the production of clean fuels more and more widely used. Distillate oil hydrotreating refers to the catalytic reactions of hydrodesulfurization, hydrodenitrogenation, hydrodeoxygenation, hydrodemetallization and unsaturated hydrocarbon hydrogenation of raw oil and hydrogen on the catalyst surface under high temperature and high pressure. Due to the deterioration of crude oil quality year by year, and in order to improve economic benefits, refineries have generally adopted crude oil vacuum deep drawing te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J37/00B01J27/19
Inventor 杜艳泽王凤来刘昶
Owner CHINA PETROLEUM & CHEM CORP
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