Improved method and device for producing hydrogen from methanol at normal pressure and low temperature of 160 DEG C
By using the method and device of 160 degrees at normal pressure and low temperature in methanol hydrogen production technology, and using high-efficiency catalyst and alloy composite filter separation technology, the problems of inaccurate catalyst temperature setting and low efficiency of separation device are solved, the hydrogen production efficiency and hydrogen collection rate are improved, and the reaction conditions and device structure are optimized.
Patent Information
- Application Number
- CN202510473069.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2025-05-30
AI Technical Summary
In the existing methanol hydrogen production technology, the temperature setting of the catalyst is inaccurate, resulting in low hydrogen production efficiency and poor efficiency of the separation device, which affects the hydrogen collection rate.
The improved hydrogen production method and device for 160 degrees methanol at normal pressure and low temperature are adopted, including preheating methanol and mixing it with the reaction gas, entering a catalytic reactor equipped with high efficiency catalyst for reforming, and then separating the hydrogen gas through alloy composite filter separation technology.
The catalytic efficiency of methanol's low-temperature reformable and cleavable reaction is improved, the hydrogen production efficiency is enhanced, the hydrogen collection standards and yields are improved, the reaction conditions and device structure are optimized, and energy consumption and equipment complexity are reduced.
Smart Images
Figure CN120057856A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of hydrogen production from methanol, and more specifically, to an improved method and device for producing hydrogen from methanol at normal pressure and low temperature of 160 °C. Background Art
[0002] Hydrogen production from methanol is an important hydrogen production technology. During the process of hydrogen production from methanol, a catalyst is required to cause the methanol reforming reaction to generate hydrogen and other gases, and then a separation device is used to separate the hydrogen. Among them, the temperature of the catalyst has a great influence on the effect of producing hydrogen by the reaction, and the separation effect of the separation device will directly affect the collection rate. The temperature of the existing catalyst will be set at low, medium, and high temperatures within a certain range, and the temperature for different devices is not accurate enough to ensure the best catalytic temperature well. And the separation is generally technology such as pressure swing adsorption (PSA), etc., and its collection efficiency is poor. Both of them result in low hydrogen production efficiency. In view of this, we propose an improved method and device for producing hydrogen from methanol at normal pressure and low temperature of 160 °C. Summary of the Invention
[0003] The purpose of the present invention is to provide an improved method and device for producing hydrogen from methanol at normal pressure and low temperature of 160 °C to solve the technical problem of low hydrogen production efficiency.
[0004] To solve the above technical problem, the present invention provides the following technical solution: An improved method and device for producing hydrogen from methanol at normal pressure and low temperature of 160 °C, including the following steps:
[0005] S1. Transport methanol from the methanol storage tank to a preheater for preheating and cool the mixed gas.
[0006] S2. Mix the preheated methanol with the reaction gas and send it to a methanol gas temperature increasing tank for temperature increase, and then enter a catalytic reactor.
[0007] S3. In the catalytic reactor, methanol undergoes a cracking and reforming reaction under the action of a 160 °C high-efficiency catalyst to generate hydrogen and other gases.
[0008] S4. Send the reacted gas to a gas separation device, and separate the mixed hydrogen through an alloy composite filter technology to obtain high-standard mixed hydrogen.
[0009] Preferably, the preheating temperature is 60 °C.
[0010] Preferably, the temperature increase in the methanol gas temperature increasing tank is 230 °C.
[0011] Preferably, the hydrogen production device includes a methanol storage tank, a condensation preheater, and a methanol gas temperature increasing tank;
[0012] A catalytic reaction part, which is composed of a catalytic reactor and a catalytic reaction tank;
[0013] The methanol storage tank, the condensation preheater, the methanol gas temperature increasing tank and the catalytic reaction part are connected through pipelines, and a gas separation device is installed on the catalytic reaction tank.
[0014] Preferably, the gas separation device adopts the alloy composite inorganic membrane separation technology, and a high-efficiency catalyst is installed in the catalytic reactor.
[0015] Preferably, the operating pressure of the catalytic reactor is 0.05 MPa to 0.6 MPa.
[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0017] The catalytic efficiency of the methanol reforming and cracking reactions at low temperature (160 °C) is improved, thereby improving the hydrogen production efficiency; the advanced alloy composite filter separation technology is adopted, the standard and yield of the mixed hydrogen are improved, the reaction conditions and the device structure are optimized, and the energy consumption and the equipment complexity are reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic structural diagram of the hydrogen production device of the present invention.
[0019] Explanation of the reference numerals in the figure:
[0020] 1. Methanol storage tank; 2. Condensation preheater; 3. Methanol gas temperature increasing tank; 4. Catalytic reaction part. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] As Figure 1 shown, an improved atmospheric pressure low temperature 160 °C methanol hydrogen production method and device of the present invention includes a methanol storage tank 1, a condensation preheater 2, a methanol gas temperature increasing tank 3, a catalytic reactor, a catalytic reaction tank, a gas separation device, etc. The catalytic reactor and the catalytic reaction tank form a catalytic reaction part. The methanol storage tank 1, the condensation preheater 2, the methanol gas temperature increasing tank 3 and the catalytic reaction part 4 are connected through pipelines. Various induction and control devices such as the required pressure can be set on the pipelines according to needs. The above is the prior art, so the detailed installation and connection methods will not be described in detail. Among them, the gas separation device adopts the alloy composite inorganic membrane separation technology, and a high-efficiency catalyst is installed in the catalytic reactor.
[0022] The methanol hydrogen production method includes the following steps: After preheating methanol, it is mixed with reaction gas and heated to a higher temperature, and then sent to a catalytic reactor equipped with a high-efficiency catalyst for reforming reaction. The gas after the reaction is separated to obtain hydrogen through the alloy composite filter separation technology. It should be noted that the preheating temperature is 60 °C to the methanol gas generating tank °C, the temperature increasing temperature of the methanol gas temperature increasing tank 3 is 230 °C, and the operating pressure of the catalytic reactor at 160 °C is 0.05 MPa to 0.6 MPa.
[0023] Working principle: This embodiment provides an improved method and device for producing hydrogen from methanol at normal pressure and low temperature of 160 °C. When in use, by improving the catalytic efficiency of the methanol reforming and cracking reactions at low temperature (160 °C), the hydrogen production efficiency is improved; the advanced alloy composite filter technology is adopted to improve the standard and yield of the mixed hydrogen, optimize the reaction conditions and device structure, and reduce the energy consumption and equipment complexity.
[0024] The embodiments disclosed in this invention are preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of this invention, they are within the protection scope of this invention.
Claims
1. An improved method for producing hydrogen from methanol at 160 degrees Celsius at normal pressure, characterized in that: The following steps are involved: S1, transporting methanol from a methanol storage tank to a preheater for preheating to cool the mixed gas; S2, mixing the preheated methanol with the reaction gas and sending them into a methanol gas heating tank for heating, and then entering a catalytic reactor; S3. In the catalytic reactor, methanol undergoes cracking and reforming reactions under the action of a high-efficiency catalyst at 160°C to generate hydrogen and other gases; S4. Send the reacted gas to the gas separation device, and separate the mixed hydrogen through the alloy composite filter separation technology to obtain high-standard mixed hydrogen.
2. The improved method for producing hydrogen from methanol at 160 degrees Celsius at normal pressure and low temperature according to claim 1, characterized in that: The preheating temperature is 60°C.
3. The improved method for producing hydrogen from methanol at 160°C at normal pressure and low temperature according to claim 2, characterized in that: The methanol gas heating tank has a heating temperature of 230°C.
4. A device for applying the improved method for producing hydrogen from methanol at normal pressure and low temperature at 160 degrees as described in any one of claims 1 to 3, characterized in that: It comprises a methanol storage tank (1), a condensation preheater (2) and a methanol gas heating tank (3); A catalytic reaction section (4), the catalytic reaction section (4) is composed of a catalytic reactor and a catalytic reaction tank; The methanol storage tank (1), the condensation preheater (2), the methanol gas warming tank (3) and the catalytic reaction part (4) are connected via a pipeline, and a gas separation device is installed on the catalytic reaction tank.
5. The improved normal pressure low temperature 160 degree methanol hydrogen production device according to claim 4 is characterized in that: The gas separation device adopts alloy composite inorganic membrane separation technology, and the catalytic reactor is equipped with a high-efficiency catalyst.
6. The improved normal pressure low temperature 160 degrees methanol hydrogen production device according to claim 5 is characterized in that: The operating pressure of the catalytic reactor is 0.05 MPa to 0.6 MPa.