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Method for preparing methane by petroleum coke catalytic gasification

A technology of petroleum coke and methane, applied in gasification process, petroleum industry, fixed bed gasification, etc., can solve the problems of difficult recovery, corrosion of gasifier, high price, etc., and achieve cost saving, corrosion reduction, and volatile little effect

Inactive Publication Date: 2018-10-12
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditionally used catalysts such as potassium salt and sodium salt catalyst have good catalytic activity, but they are expensive, difficult to recycle, and corrode the gasifier.

Method used

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  • Method for preparing methane by petroleum coke catalytic gasification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Petroleum coke and CaO with a particle size of less than 0.074 mm are respectively introduced into the fluidized bed gasifier, the mass flow rate of petroleum coke is 1 g / min, and the mass flow rate of CaO is 1 g / min. At the same time, at a temperature of 700 ° C, The pressure is 10Mpa, and the water vapor mass flow rate is 1g / min under the working condition of gasification for 120 minutes. The content of each gas component produced is shown in Table 1.

Embodiment 2

[0023] Embodiment 2: In the fluidized bed gasification furnace, feed respectively petroleum coke and ZrO with a particle size less than 0.074mm 2 , the mass flow rate of petroleum coke is 1g / min, ZrO 2 The mass flow rate is 2.14g / min. At the same time, the temperature is 700°C, the pressure is 10Mpa, and the water vapor mass flow rate is 1g / min. Show.

Embodiment 3

[0024] Embodiment 3: In the fluidized bed gasification furnace, feed respectively petroleum coke and ZrO with a particle size less than 0.074mm 2 , the mass flow rate of petroleum coke is 1g / min, Ba 2 TiO 4 The mass flow rate is 5.1g / min. At the same time, the temperature is 700°C, the pressure is 10Mpa, and the water vapor mass flow rate is 1g / min. The gasification is performed for 140 minutes. Show.

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Abstract

The invention discloses a method for preparing methane by petroleum coke catalytic gasification. According to the method, a catalyst is mixed with petroleum coke by adopting a dry mixing method to obtain an experimental sample; the experimental sample is put in a fluidized bed, and performs a catalytic gasification at a temperature of 700 DEG C and a reacting pressure of 10MPa under a work condition that the mass ratio of vapor to the petroleum coke is 1 to prepare methane gas. By adopting the method, the petroleum coke is catalytically gasified by utilizing the catalyst, the gasifying reaction activity can be greatly improved, the average reaction rate can be accelerated, the content of methane can be remarkably increased, and efficient and clean utilization of the petroleum coke can be realized.

Description

technical field [0001] The invention relates to the field of energy and chemical industry, in particular to a method for preparing methane by catalytic gasification of petroleum coke. Background technique [0002] Petroleum coke is a by-product of petroleum coking and cracking, which has the characteristics of high carbon content, high calorific value, low ash content and low volatile matter. In recent years, my country's petroleum coke production has been increasing, and because most of the crude oil imported by my country is low-quality oil, a large amount of high-sulfur petroleum coke has been produced. According to the National Bureau of Statistics, from January to October 2017, the total domestic production of petroleum coke has exceeded 22.6 million tons. At present, domestic low-sulfur petroleum coke is mainly used in electrolytic aluminum and other metallurgical industries. Most of the methods of utilizing high-sulfur petroleum coke are direct combustion. The combus...

Claims

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Application Information

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IPC IPC(8): C10J3/02C10J3/48
CPCC10J3/02C10J3/482C10J2300/0906C10J2300/0909C10J2300/0943C10J2300/0976C10J2300/0986Y02P20/52
Inventor 田伟阎富生史金星梁容真王越吴智勇
Owner NORTHEASTERN UNIV
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