Electric heating methanol reformer

Abstract

The invention discloses an electric heating methanol reformer, and aims to provide an electric heating methanol reformer which is compact in structure, small in size, small in occupied space, uniform in heating, high in hydrogen production efficiency and high in reactor starting speed. The reformer comprises a reformer body, and the reformer body is provided with a raw material heat exchange area, a raw material preheating area, an electric heating area, a reforming area, a reformed synthetic gas exhaust loop and a heat insulation area. The tail end of the raw material heat exchange area is communicated with the head end of the raw material preheating area, the tail end of the raw material preheating area is communicated with the head end of the reforming area, and the tail end of the reforming area is communicated with the head end of the reformed synthetic gas exhaust loop. The electric heating area is arranged corresponding to the reforming area and the raw material preheating area. The reformed synthetic gas discharge loop is arranged corresponding to the raw material heat exchange area, and hydrogen-rich gas in the reformed synthetic gas discharge loop exchanges heat with raw materials in the raw material heat exchange area. The invention relates to the technical field of methanol reformers.

Description

technical field [0001] The present invention relates to the technical field of methanol reformer, more precisely relates to an electrically heated methanol reformer. Background technique [0002] The hydrogen production reaction by steam reforming of methanol is an endothermic reaction, and usually the preferred reaction temperature is about 250-280°C. At present, the main heating method is to generate high-temperature gas through fuel combustion, and then use the high-temperature gas to preheat the raw material and supply heat to the reforming chamber. Due to the small specific heat of the gas and the small amount of heat carried, the temperature difference between the positions near and far from the heat source Larger, it is easy to cause uneven heating of the reactor, resulting in low efficiency, and the start-up time is relatively long, usually more than 20 minutes; there are also ways to heat the heat transfer oil by combustion or electric heating, and use the heat tran...

AI Technical Summary

Problems solved by technology

At present, the main heating method is to generate high-temperature gas through fuel combustion, and then use the high-temperature gas to preheat the raw material and supply heat to the reforming chamber. Due to the small specific heat of the gas and the small amount of heat carried, the temperature difference between the positions near and far from the heat source Larger, it is easy to cause uneven heating of the reactor, resulting in low efficiency, and the start-up time is relatively long, usually more than 20 minutes; there are also ways to heat the heat transfer oil by combustion or electric heating, and use the heat transfer oil to preheat the raw materials and supply heat to the reforming chamber , usually complex in structure and large in size

[0003] In addition, there are also combustion flames that directly heat the vaporization chamber and reforming chamber. Due to the high flame temperature, the requirements for the material of the reactor are very high, and it is also easy to cause uneven heating of the reforming chamber.

Because it involves combustion, its application is limited in some relatively closed or poorly ventilated places, or places with explosion-proof requirements

Images