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Equipment and process for synthesizing methanol through solar energy hydrogen production

A technology for synthesizing methanol and solar energy, which is applied in the field of equipment and technology for synthesizing methanol from hydrogen production by solar energy, can solve the problem that water, a by-product of methanol production, is not well utilized, solar energy is not well utilized, and hydrogen raw material preparation efficiency is low. and other issues to achieve the effect of improving solar energy utilization efficiency, reducing heat demand and improving efficiency

Active Publication Date: 2016-12-21
GUANGDONG HYDROGEN ENERGY SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above-mentioned methanol production process, the production efficiency of hydrogen raw materials is low, solar energy is not well utilized, energy waste is serious, and the by-product water produced by methanol production is not well utilized.

Method used

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  • Equipment and process for synthesizing methanol through solar energy hydrogen production
  • Equipment and process for synthesizing methanol through solar energy hydrogen production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Such as figure 1 Shown, a kind of equipment of solar hydrogen production synthetic methanol, comprises:

[0054] The solar heat concentrating system 1 is used for concentrating and collecting heat, and provides thermal energy for the high-temperature water vapor preparation system 2; the solar heat concentrating system includes a solar concentrating heat collector, which is a trough-type solar concentrating Any one of dish solar concentrators, tower solar concentrators, and compound parabolic concentrators;

[0055] High-temperature water vapor production system 2 is used to prepare high-temperature water vapor at 800°C to 900°C by using the heat energy provided by solar heat collection system 1, and the high-temperature water vapor is supplied to high-temperature electrolysis hydrogen production system 3;

[0056] The solar power generation system 4 is used to use solar energy to generate direct current and supply it to the high-temperature electrolytic hydrogen produ...

Embodiment 2

[0070] Such as figure 2 Shown, a kind of equipment of solar hydrogen production synthetic methanol, comprises:

[0071] The solar power generation system 4 is used for solar power generation, and is supplied to the high-temperature water vapor preparation system 2 and the high-temperature electrolytic hydrogen production system 3; the solar power generation system 4 includes solar cells, and the solar cells are monocrystalline silicon solar cells or polycrystalline silicon solar cells or non- Crystalline silicon solar cells;

[0072] The high-temperature steam production system 2 is equipped with an electric heater powered by solar energy (not shown in the figure). The high-temperature steam production system 2 uses the heat energy of the electric heater to produce high-temperature steam at 800°C to 900°C. Supply to the high temperature electrolysis hydrogen production system 3;

[0073] The high-temperature electrolytic hydrogen production system 3 uses the direct current ...

Embodiment 3

[0087] A process for synthesizing methanol from hydrogen produced by solar energy, comprising the following process steps:

[0088] a. Utilize solar heat collection or solar power generation to make the high-temperature water vapor preparation system work, prepare high-temperature water vapor at 800°C to 900°C, and supply it to the high-temperature electrolysis hydrogen production device;

[0089] b. Utilize the solar power generation system to supply direct current to the high-temperature electrolytic hydrogen production device, and the high-temperature electrolytic hydrogen production device electrolyzes high-temperature water vapor to produce hydrogen and oxygen, among which, the high-temperature hydrogen is transported to the gas mixing device; at the same time, the carbon dioxide production system is used to prepare carbon dioxide , sent to the gas mixing device;

[0090] c. In the gas mixing device, high-temperature hydrogen and carbon dioxide are mixed into a medium-tem...

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Abstract

The invention discloses equipment and a process for synthesizing methanol through solar energy hydrogen production. The equipment comprises a solar energy heat accumulation system, a high-temperature water vapor preparation system, a solar power generation system, a high-temperature electrolysis hydrogen production system, a carbon dioxide preparation system, a gas mixing device, a methanol synthesis system, a first heat exchanger, a molecular sieve membrane separator, a methanol storage tank, a water storage tank and a conveying pump, wherein the high-temperature water vapor preparation system is used for preparing high-temperature water vapor at 800-900 DEG C by using heat energy provided by the solar energy heat accumulation system and supplying the high-temperature water vapor to the high-temperature electrolysis hydrogen production system; the first heat exchanger is mounted on a conveying pipe between the methanol synthesis system and the molecular sieve membrane separator; the molecular sieve membrane separator is used for separating water in methanol water-diluted solution, conveying the separated water to the water storage tank, and pumping the water to the high-temperature water vapor preparation system through the conveying pump. The equipment and the process provided by the invention are high in preparation efficiency of hydrogen raw materials and high in utilization rate of solar energy, and can fully utilize by-product water produced during the production of methanol.

Description

technical field [0001] The invention relates to an equipment and process for producing hydrogen and synthesizing methanol through solar energy. Background technique [0002] Methanol (CH 3 OH), is an important organic chemical raw material and high-quality energy. It is mainly used in the manufacture of various organic products such as formaldehyde, acetic acid, methyl chloride, methylammonia, and dimethyl sulfate. It is also one of the important raw materials for pesticides and medicines. Methanol can also be used as a fuel instead of gasoline and in advanced hydrogen reforming processes. In the prior art, methanol manufacturing methods mainly include the following: one, hydrolysis of methyl chloride: CH 3 Cl+H 2 O→CH 3 OH+HCl; Second, partial oxidation of methane, direct oxidation of methane to methanol: 2CH 4 +O 2 →2CH 3 OH; third, the method of producing methanol from coal, coke, oil and other mineral energy sources; fourth, the synthesis of hydrogen and carbon mo...

Claims

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Application Information

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IPC IPC(8): C07C29/152C07C29/76C07C31/04C25B1/04C25B9/04
CPCC07C29/152C07C29/76C25B1/04C25B9/65C07C31/04Y02E60/36Y02P20/133Y02P20/50
Inventor 向华
Owner GUANGDONG HYDROGEN ENERGY SCI & TECH
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