A kind of composite heating hydrothermal reaction device and composite heating method thereof

Abstract

The invention discloses a composite heating hydrothermal reaction device and a composite heating method. The device comprises a hydrothermal reaction tank, a sub-cylinder, a high temperature oil tank and a low temperature oil tank. The hydrothermal reaction tank includes a straight section of the tank body, the bottom of the tank body and the top of the tank body. A plurality of vertically arranged heat-conducting oil heating pipes are arranged in the straight section of the tank body. Connected. The bottom of the tank is provided with a heat-conducting oil coil, which is arranged around and close to the inner wall of the bottom of the tank. to switch. The hydrothermal reaction tank is also provided with steam heating pipes arranged around from bottom to top, and the inlet is connected to the sub-cylinder. Through the composite heat exchange of steam and heat-conducting oil, the present invention can ensure sufficient heat exchange temperature difference between the material and the heat exchange tube to effectively heat the material, and at the same time can effectively reduce the temperature difference between the two, so as to avoid the formation of the material on the outer wall of the heat exchange tube. scab.

Description

technical field [0001] The invention relates to a composite heating hydrothermal reaction device and a composite heating method thereof, in particular to a hydrothermal cracking reaction device used for conditioning organic wastes such as livestock and poultry manure, straw, agricultural product processing residues, forestry wastes and the like , belonging to the field of environmental protection technology and pressure vessels. Background technique [0002] On the one hand, with the development of rural aquaculture, the pollution of water, air and soil in rural areas caused by manure has also attracted attention. Without effective treatment, toxic substances such as bacteria, hormones, and antibiotics will enter the soil through livestock and poultry manure. , In water bodies, while posing a deep threat to the environment, it will also enter the food chain and pose a food safety problem. In situ incineration of straw is one of the important causes of air pollution. On the...

AI Technical Summary

Problems solved by technology

If water vapor is directly added to the hydrothermal cracking device to achieve temperature rise and pressure, it will inevitably make the moisture content of the material in the device uncontrollable

However, the single-wall heat exchange method often has a large heating temperature difference, which makes the material excessively dehydrated and scabs outside the heat exchange tube, affecting heat exchange.

Images