Automatic catalyst-feeding method

An automatic feeding and catalyst technology, applied in chemical instruments and methods, feeding devices, chemical/physical processes, etc., can solve the problem of small feeding volume, achieve the effect of increasing feeding volume, increasing equipment investment, and small fluctuations in device operation

Active Publication Date: 2010-08-25
LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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Problems solved by technology

[0003] The purpose of the present invention is to provide a catalyst automatic feeding method to solve the problem tha

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Embodiment

[0055] The method of the invention is adopted to continuously and automatically feed the regenerator of the FCC device of a certain oil refinery. The feeding system is shown in Figure 1. The effective catalyst volume of the feeder 1 is 0.17 cubic meters, and the rated capacity of the catalyst is 153 kilograms. The weighing instrument 32 is an electronic weighing sensor, the model is BM11-200, and the accuracy is ±2‰.

[0056] The regenerator 72 is a regenerator of an FCC device, with a volume of 250 cubic meters and a pressure P5 of 0.20 MPa. The catalyst storage tank 71 has a volume of 500 cubic meters, stores 390 tons of catalyst, and has a material level height of 20 meters. The catalyst is an FCC catalyst, and the grade is GRV-C.

[0057] The nominal diameter of the feed pipe 82 and the feed valve 42 set on the feed pipe 82 and the feed regulating valve 51 is DN50 millimeters, and the length of the feed pipe 82 is 3 meters. The nominal diameter of the discharge pipe 83...

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Abstract

The invention discloses an automatic catalyst-feeding method in order to solve the problem that the feeding amount of the prior small feeder with a weighing function is small in the process of batch-by-batch feeding. In the process of operation, flow-conveying air is constantly charged into a feeder (1), and the pressure P4 of the feeder (1) is constantly lower than or equal to the pressurizing pressure P1 of a catalyst storage tank (71) and higher than the pressure P5 of a regenerator (72). The method mainly includes the following steps: (A) feeding speed regulation, (B) regulative discharge, (C) feeding, and (D) feeding standardization. The method is mainly used in the fluid catalytic cracking technique of the petrochemical industry and the methanol-to-olefins reaction technique of the coal chemical industry, and uses the small feeder (1) with a weighing function to continuously feed a great deal of catalyst in the catalyst storage tank (71) into the regenerator (72).

Description

technical field [0001] The invention relates to a catalyst automatic feeding method, in particular to a catalyst automatic feeding method using a small feeder with a weighing function. Background technique [0002] In the fluid catalytic cracking (FCC) process in the petrochemical industry and the methanol conversion to olefins (MTO) process in the coal chemical industry, the catalyst is an important material participating in the reaction; The catalyst is replenished with fresh catalyst to maintain its activity balance. Domestically, this is generally called catalyst feeding, and the corresponding equipment is called catalyst feeding device. There are many types of feeders, and the small feeder with weighing function is one of them. The powder material automatic metering feeder announced as Chinese patent CN2360147Y is made up of parts such as fluidized tank, weighing sensor, fluidized weighing pallet. The catalyst automatic feeder introduced in the 2002 No. 9 issue of "R...

Claims

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Application Information

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IPC IPC(8): B01J4/00
Inventor 苏秦豫夏金法刘丹张振千刘昱梁龙虎张聚越乔立功施磊
Owner LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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