Method of producing gasoline by fluidized bed process methanol

A technology using flow and fluidized bed reactors, applied in the petroleum industry, biological raw materials, preparation of liquid hydrocarbon mixtures, etc., can solve the problems of high energy consumption, large investment, complicated process, etc., and achieve low investment and high heat exchange intensity High, constant catalyst properties

Inactive Publication Date: 2010-07-14
山西天和煤气化科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The MTG process in my country's coal-to-oil projects mainly relies on the introduction of fixed-bed technology from abroad, but this technology has disadvantages such as high energy consumption, complicated process, and large investment

Method used

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  • Method of producing gasoline by fluidized bed process methanol
  • Method of producing gasoline by fluidized bed process methanol
  • Method of producing gasoline by fluidized bed process methanol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Crude methanol is pumped into the preheater from the methanol storage tank through the methanol metering pump, preheated and vaporized in the preheater, and then enters the tank equipped with zirconium-containing ZSM-5 molecular sieve catalyst A with a silicon-aluminum ratio of 80 produced by the Shanxi Coal Chemical Industry Institute of the Chinese Academy of Sciences. Fluidized bed reactor, the reactor temperature is controlled by a program temperature controller to 360°C, the pressure is 0.1MPa, and the space velocity is 1.0h -1 React with the catalyst in the reactor. The catalyst is continuously or intermittently removed from the reactor at a certain speed, and then replenished by the regenerator at the same speed, and the cycle is repeated. The catalyst regeneration conditions are: temperature 500°C; pressure 0.1MPa; regeneration gas is air and N 2 Mixed gas, gravimetric space velocity: 3h -1 , the regeneration time is 2 hours. The reaction product flows out fr...

Embodiment 2

[0023] Crude methanol is pumped into the preheater from the methanol storage tank through the methanol metering pump. After preheating and vaporizing in the preheater, it enters the fluidized bed reactor equipped with catalyst B with a silicon-aluminum ratio of 38 produced by Nankai University. The reactor The temperature is controlled by a program temperature controller to 380°C, at a pressure of 0.22MPa and a space velocity of 1.6h -1 React with the catalyst in the reactor, and others are the same as in Example 1. The regeneration conditions of the catalyst are: temperature 550°C; pressure 0.2MPa; regeneration gas is O 2 with N 2 Mixed gas, weight space velocity: 5h -1 , the regeneration time is 4 hours.

Embodiment 3

[0025] Crude methanol is metered by the methanol metering pump according to the amount required by the test and injected into the preheater from the methanol storage tank. After preheating and vaporizing in the preheater, it enters a certain amount of catalyst C with a silicon-aluminum ratio of 50 produced by Nankai University. The fluidized bed reactor, the reactor temperature is controlled by the program temperature controller to 400 ℃, the pressure is 0.28MPa, the space velocity is 2.0h -1 React with the catalyst in the reactor, and others are the same as in Example 1. The regeneration conditions of the catalyst are: temperature 600°C; pressure 0.2MPa; regeneration gas is O 2 with N 2 Mixed gas, gravimetric space velocity: 10h -1 , the regeneration time is 4 hours.

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Abstract

The invention relates to a method of producing gasoline by fluidized bed process methanol, in which crude methanol steam enters a fluidized bed reactor from the lower part to be contacted and reacted with a catalyst; a part of the catalyst after reaction is taken out continuously or discontinuously from the upper part of the reactor in a certain output amount for regeneration, and then the catalyst is supplemented with the same output amount from the lower part of the reactor by the regenerator, which is repeated and circulated. Reaction products flow out from the top of the fluidized bed reactor, and after gas-solid separation, the obtained catalyst powder enters the fluidized bed reactor again, gas firstly enters to be cooled, then gas-liquid separation is carried out, separated light hydrocarbon gas is collected by a gas holder and then is sent by compression into the fluidized bed reactor for light hydrocarbon circulation, and liquid separation is carried out on the separated liquid to obtain the gasoline and water. The technology used in the invention has the advantages that the catalyst can be regenerated continuously, a spare reactor is not needed, the nature of the catalyst is constant, the quality of the gasoline is high (octane value RON 93 plus), the conversion rate of the methanol is 100 percent, and the heat transfer intensity is high.

Description

technical field [0001] The invention relates to a methanol deep-processing process, in particular to a method for producing gasoline using fluidized bed process methanol. Background technique [0002] At present, the global financial turmoil is gradually affecting the real economy, and the international oil price has turned down due to this influence. But in the long run, due to the non-renewability of oil resources and the lack of good substitutes, under the support of rigid demand, oil prices will rise in the future. Whether the MTG process can gain a foothold in China depends on whether there is a surplus of coal-to-methanol. Once coal methanol is in surplus, MTG may become the successor industry chain of methanol. Statistics show that by the end of 2008, the country's total methanol production capacity exceeded 27 million tons, methanol production was 11.1 million tons, and apparent consumption was around 12 million tons. In the near future, the capacity of my country...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G3/00
CPCY02P30/20
Inventor 原丰贞刘于英王芙蓉王洋程中虎原靖鑫王伟宋新朝胡震夏立森
Owner 山西天和煤气化科技有限公司
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