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Composite oxide type coal bed methane dehydrating agent and preparation method thereof

A technology of composite oxides and dehydrating agents, applied in chemical instruments and methods, separation methods, gas fuels, etc., can solve problems such as poor water absorption, and achieve the effects of low cost, simple production process and significant economic benefits

Inactive Publication Date: 2013-09-18
马玉山
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Realize waste treatment with waste, stable desulfurization effect, low cost, but the above patent does not add other additives, poor water absorption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for preparing composite oxide type coal bed gas dehydrating agent, comprising the steps of:

[0018] (a) Take nano-iron oxide powder, manganese carbonate, and zinc nitrate precursor at a molar ratio of 15:5:5, add deionized water, and then form a suspension by ultrasonication;

[0019] (b) Add sodium hydroxide to the suspension to form a mixed solution, keep stirring, then move the mixed solution into a microwave reaction vessel, heat to 200°C at a heating rate of 10°C / min, and keep warm for 1.5h;

[0020] (c) the reactant is cooled to room temperature, and washed repeatedly with deionized water until the pH value is neutral;

[0021] (d) drying the product obtained in step (c) in a vacuum oven at 60° C. for 5 hours to obtain an iron oxide-manganese oxide-zinc oxide composite material;

[0022] (e) After adding copper oxide, calcium carbonate and magnesium oxide to the iron oxide-manganese oxide-zinc oxide composite material, add water glass and water, carry o...

Embodiment 2

[0024] A method for preparing composite oxide type coal bed gas dehydrating agent, comprising the steps of:

[0025] (a) Take nano-iron oxide powder, manganese carbonate, and zinc nitrate precursor at a molar ratio of 20:10:8, add deionized water, and then ultrasonically form a suspension;

[0026] (b) Add sodium hydroxide to the suspension to form a mixed solution, keep stirring, then move the mixed solution into a microwave reaction vessel, heat to 210°C at a heating rate of 12°C / min, and keep warm for 1.5h;

[0027] (c) the reactant is cooled to room temperature, and washed repeatedly with deionized water until the pH value is neutral;

[0028] (d) drying the product obtained in step (c) in a vacuum oven at 65° C. for 6 hours to obtain an iron oxide-manganese oxide-zinc oxide composite material;

[0029] (e) Add copper oxide, calcium carbonate and magnesium oxide to the iron oxide-manganese oxide-zinc oxide composite material, add water glass and water, carry out molding t...

Embodiment 3

[0031] A method for preparing composite oxide type coal bed gas dehydrating agent, comprising the steps of:

[0032] (a) Take nano-iron oxide powder, manganese carbonate, and zinc nitrate precursors in a molar ratio of 25:15:10, add deionized water, and then ultrasonically form a suspension;

[0033] (b) Add sodium hydroxide to the suspension to form a mixed solution, keep stirring, then move the mixed solution into a microwave reaction vessel, heat to 220°C at a heating rate of 15°C / min, and keep it warm for 2h;

[0034] (c) the reactant is cooled to room temperature, and washed repeatedly with deionized water until the pH value is neutral;

[0035] (d) drying the product obtained in step (c) in a vacuum oven at 70° C. for 8 hours to obtain an iron oxide-manganese oxide-zinc oxide composite material;

[0036] (e) After adding copper oxide, calcium carbonate and magnesium oxide to the iron oxide-manganese oxide-zinc oxide composite material, add water glass and water, carry o...

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PUM

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Abstract

The invention relates to a dehydrating agent and a preparation method thereof, and particularly relates to a composite oxide type coal bed methane dehydrating agent and a preparation method thereof. The composite oxide type coal bed methane dehydrating agent comprises the following components in parts by weight: 5-10 parts of magnesium oxide, 20-30 parts of silicon dioxide, 15-25 parts of iron oxide, 5-15 parts of zinc oxide, 5-10 parts of manganese oxide, 5-10 parts of copper oxide and 5-15 parts of calcium oxide. By adopting nano iron oxide as a template, zinc nitrate and manganese carbonate as precursors, sodium hydroxide as a mineralizing agent and deionized water as a raw material, the preparation method provided by the invention comprises the following steps of: obtaining a nano iron oxide-manganese oxide-zinc oxide nano material through a microwave auxiliary hydrothermal reaction; adding the copper oxide, calcium carbonate and magnesium oxide for molding treatment; roasting for 3-5 hours at 500-600 DEG C; and slowly cooling to room temperature to obtain the composite oxide type coal bed methane dehydrating agent. The dehydration effect of the composite oxide type coal bed methane dehydrating agent provided by the invention can exceed 89%; and the composite oxide type coal bed methane dehydrating agent has the advantages of simple production process, convenience in use, low cost, remarkable economic benefits and outstanding social benefits.

Description

technical field [0001] The invention relates to a dehydrating agent and a preparation method thereof, in particular to a composite oxide type coal bed gas dehydrating agent and a preparation method thereof. Background technique [0002] As conventional natural gas resources continue to decrease, energy demand continues to increase, especially the increasingly stringent requirements for environmental protection, coalbed methane, as a huge potential resource, plays an increasingly important role in the global energy structure. Coalbed methane contains impurities such as hydrogen sulfide and water. The existence of these impurities is easy to corrode equipment and pipelines; the sulfur dioxide produced after combustion causes air pollution and causes serious harm to crops, forests, buildings and human health; in addition, when used as a chemical When the raw material is used, the sulfur-containing substances in the coalbed methane can easily lead to the loss of catalytic activi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/26B01D53/81B01D53/52C10L3/10
Inventor 马玉山
Owner 马玉山