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Detection method of solid particle coking amount in reactor

A technology of solid particles and detection methods, which is applied in the direction of material analysis using sonic emission technology, can solve the problem of inability to accurately measure the carbon deposition of catalysts in real time and online, and achieve strong adaptability, high precision and good technical effect. Effect

Active Publication Date: 2013-03-06
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The technical problem to be solved by the present invention is the problem that the existing technology cannot accurately measure the carbon deposition amount of the catalyst in the reactor in real time online, and a new detection method for the coking amount of solid particles in the reactor is provided

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  • Detection method of solid particle coking amount in reactor
  • Detection method of solid particle coking amount in reactor
  • Detection method of solid particle coking amount in reactor

Examples

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Embodiment 1

[0037] The acoustic emission detection method of catalyst coking amount in the FCC fluidized bed reactor comprises the steps:

[0038] 1) receive the acoustic emission signal that the catalyst inside the reactor hits the wall and produce; be 785mm in height, inner diameter be 50mm, distribution plate is a porous flat plate, in the gas-solid circulating fluidized bed that the plexiglass construction of opening ratio 2.6%, with The air is fluidized gas with a superficial gas velocity of 0.12m / s, and the passive acoustic emission transducer is attached 180mm above the distribution plate. Under the above conditions, the acoustic emission signals of the FCC fresh catalyst and the coked catalyst at the above gas velocity were respectively measured. The frequency of the acoustic emission signal is 0 Hz to 20 MHz, and the frequency of the acoustic emission signal is preferably 0 Hz to 1 MHz.

[0039] 2) Measure the acoustic signals of fresh FCC catalysts and six catalysts with differ...

Embodiment 2

[0046] The acoustic emission detection method of catalyst coking amount in MTO moving bed reactor comprises the following steps:

[0047] 1) Receive the acoustic emission signal generated by the catalyst hitting the wall inside the moving bed reactor; in the gas-solid circulating moving bed made of plexiglass with a size of 8×400mm, the air is used as the gas, and the weight hourly space velocity is 1hr -1 , the passive acoustic emission transducer is placed in the middle of the catalyst particle bed. Under the above conditions, the acoustic emission signals of the MTO fresh catalyst and the coked catalyst at the above gas velocity were respectively measured. The frequency of the acoustic emission signal is 0 Hz to 1 MHz, and the frequency of the acoustic emission signal is preferably 50 Hz to 800 kHz.

[0048] 2) Acoustic signals of fresh MTO catalysts and five catalysts with different coking amounts were measured, analyzed by FFT spectrum, and characteristic peaks were sele...

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Abstract

The invention relates to a detection method of solid particle coking amount in a reactor, mainly solving the problem existing in previous technology that real-time on-line determination of catalyst carbon formation amount in a reactor can not be realized. According to the invention, the technical scheme employed by the invention is as follows: receiving sound emission signals generated by the bump of internal solid particle on a reactor wall at any position of the reactor, analyzing a picture of power spectrum after a fast Fourier transform (FFT) change, combined with smoothing and de-noising treatments, and confirming the amount of coking quantitatively to realize the real-time on-line monitoring of the process of catalyst coking and scorch. Thus the above problem is solved in a better way. The detection method provided in the invention can be used in fluid catalytic cracking (FCC) industry and productive technologies of methanol to olefin (MTO) and gas to olefin (GTO).

Description

technical field [0001] The invention relates to an acoustic emission non-destructive quantitative detection method for the coking amount of solid particles in a reactor. Background technique [0002] In coal chemical industry and petrochemical industry, the problem of catalyst coking exists widely in processes such as crude oil catalytic cracking (FCC), methanol to olefins (MTO) and natural gas to olefins (GTO). Among them, the methanol to olefins (Methanol to Olefins, referred to as MTO) process is a new technology successfully developed in 1995 by UOP of the United States and HYDRO of Norway. The main olefin product. According to different methanol raw materials, there are two routes of natural gas and coal. Methanol to Propylene (MTP) is a process in which coal or natural gas is used as raw material to prepare propylene from methanol. The raw materials of MTP and MTO processes are basically the same, but the target products are different. Strictly speaking, although t...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/14
Inventor 阳永荣曹翌佳钟思青唐玥琪王靖岱王仰东马广伟
Owner CHINA PETROLEUM & CHEM CORP