Method for preparing synchronously synthetic gas and metal zinc

A metal zinc and synthesis gas technology, applied in chemical instruments and methods, non-metallic elements, inorganic chemistry, etc., can solve the problems of poor reaction efficiency, large and complex equipment, low energy utilization efficiency, etc., and achieve simple operation and short process flow Effect

Active Publication Date: 2008-04-09
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The steam reforming reaction is a strong endothermic process with high energy consumption, large and complex equipment, and expensive operation costs. Syngas generation accounts for about 60% to 70% of the total investment and production costs of the entire natural gas chemical industry, and needs to be improved and perfection
The carbon dioxide reforming process is also being studied now, but this process uses natural gas and carbon dioxide as raw materials, and only hydrogen (H 2 ) and carbon monoxide (CO) with a ratio of 1:1 is not conducive to subsequent reprocessing, and two species with high carbon content are used as raw materials for the reaction, and there will be serious carbon deposition problems
However, the partial oxidation technology that has been studied more at present requires the preparation of pure oxygen, and the investment and operating costs of the oxygen production plant are relativel...

Method used

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  • Method for preparing synchronously synthetic gas and metal zinc

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] ① Implementation conditions

[0021] Using zinc oxide as the oxygen carrier, sodium carbonate (Na 2 CO 3 ) and potassium carbonate (K 2 CO 3 ) as a molten salt system, industrial methane as the reaction raw material gas, the reactor is a stainless steel reactor with a length of 550mm and an inner diameter of 28mm, and one end is sealed. Put the zinc oxide powder and mixed carbonate into the reactor after being uniformly ground in advance, the mass of the zinc oxide powder accounts for 35% of the mass of the molten salt, the reactor is placed in a tubular electric furnace, and the temperature is raised to 1173K for heating for 2 hours; Put the air inlet and outlet pipes and the connected sealing caps in the reactor, the air inlet pipes go deep into the bottom of the reactor, tighten the sealing caps, the air outlet pipes first lead into a cold well, then into a container filled with water, check the airtightness, and then Nitrogen (N 2 ) for about 2 hours to empty t...

Embodiment 2

[0025] ① Implementation conditions

[0026] Zinc oxide is used as the oxygen carrier, and the molten salt system selected is sodium carbonate (Na 2 CO 3 ), potassium carbonate (K 2 CO 3 ) and lithium carbonate (Li 2 CO 3 ), industrial methane is the reaction raw material gas, and the reaction is carried out in a stainless steel reactor with a length of 550mm and an internal diameter of 28mm, and one end is sealed. Grind the zinc oxide powder and the mixed carbonate in advance and put them into the reactor. The mass of the zinc oxide powder accounts for 20% of the mass of the molten salt. The reaction temperature is 1223K, the temperature fluctuation range is ±1K, and the gas flow rate is 150Ncm 3 min -1 , the reaction time is 1 hour, and the reaction is an intermittent operation.

[0027] ②Implementation results

[0028] Through the composition analysis of the product gas, it is found that the gas composition is mainly hydrogen (H 2 ) and carbon monoxide (CO), the mol...

Embodiment 3

[0030] ① Implementation conditions

[0031] Zinc oxide is used as the oxygen carrier, and the molten salt system selected is potassium carbonate (K 2 CO 3 ) and lithium carbonate (Li 2 CO 3 ), industrial methane is the reaction raw material gas, and the reaction is carried out in a stainless steel reactor with a length of 550mm and an internal diameter of 28mm, and one end is sealed. The zinc oxide powder and the mixed carbonate are pre-ground evenly and then put into the reactor. The mass of zinc oxide powder accounts for 6% of the molten salt mass, the reaction temperature is 1273K, the temperature fluctuation range is ±1K, and the gas flow rate is 200Ncm 3 min -1 , the reaction time is 7 hours, and the reaction is an intermittent operation.

[0032] ②Implementation results

[0033] Through the composition analysis of the product gas, it is found that the gas composition is mainly hydrogen (H 2 ) and carbon monoxide (CO), the molar ratio of the two is close to 2:1, th...

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Abstract

A synchronization preparation method of syngas and metal zinc is provided. The invention relates to and belongs to the technosphere of energy source and metallurgy, in particular to a method to synchronic prepare syngas and metal zinc in a reaction process. The method has the operation that carbonate molten salt is used as reaction medium in a molten salt reaction vessel, by redox reaction of methane and zinc oxide powder, the synthesis gas of carbon monoxide and hydrogen and metal zinc are synchronously generated. The invention not only achieves the purposes of saving energy and reducing cost, but also avoids generating thermal dam and three wastes. The system simplifies the processing technique of the metal zinc and reduces the production cost; and new energy resource synthesis gas with great application value is achieved at the same time.

Description

technical field [0001] The invention belongs to the technical field of energy and metallurgy, in particular to a method for synchronously producing synthesis gas and metal zinc in one reaction process. Background technique [0002] The three pillars of energy in the world today are oil, coal, and natural gas. The current reserves of oil are estimated to be used by humans for less than 50 years. Therefore, finding alternatives to oil is the most urgent problem in the world today. Methane (CH 4 ) is the main component of natural gas, coalbed methane and methane hydrate (combustible ice). With the increasing depletion of oil resources, abundant methane resources will become one of the most promising alternative energy sources. Experts predict that by the 20th century, in the world's energy structure, methane will increase from the current 25% to 40%, thereby replacing oil as the world's most important energy source, and will also replace oil as the most important chemical raw ...

Claims

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Application Information

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IPC IPC(8): C01B3/36C22B19/00C22B5/12
Inventor 王华胡建杭敖先权魏永刚何方
Owner KUNMING UNIV OF SCI & TECH
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