Continuous organic fertilizer hydrothermal cracking system

Abstract

The invention discloses a continuous organic fertilizer hydrothermal cracking system which comprises a feeding device, and a feeding buffer tank, a hydrothermal cracking pipe, a hydrothermal cracking tank, a pressure relief device and a discharging pool connected in sequence. The hydrothermal cracking pipe is designed according to a jacket type, and heat conduction oil is introduced as a heat medium. The hydrothermal cracking pipe is arranged according to the material retention time of 45-120 minutes and comprises a first-stage hydrothermal cracking pipe and a second-stage hydrothermal cracking pipe, a first-stage pressure pump is arranged between the first-stage hydrothermal cracking pipe and the feeding buffer tank for connection, and a second-stage pressure pump is arranged between the first-stage hydrothermal cracking pipe and the second-stage hydrothermal cracking pipe for connection. The pressure relief device comprises a pressure relief valve, a venturi pressure relief pipe and a ring pipe, and a wedge-shaped spoiler is further arranged on the divergent section of the venturi pressure relief pipe. The problems of metal material fatigue, energy waste and low production efficiency caused by the periodic transition process of temperature rise, temperature reduction, pressure rise and pressure reduction are avoided, the safety, the production efficiency and the energy efficiency are remarkably improved, and the economical efficiency is increased.

Description

technical field [0001] The invention relates to a continuous hydrothermal cracking system for organic fertilizers, in particular to a continuous hydrothermal cracking system for conditioning and tempering organic wastes such as livestock and poultry manure, straw, agricultural product processing residues, and forestry waste, which belongs to the environmental protection technology and pressure vessels. Background technique [0002] On the one hand, with the development of the farming industry in rural areas, the pollution of water, air and soil caused by farming manure has also attracted attention. Without effective treatment, toxic substances such as germs, hormones, and antibiotics will enter the soil through the agricultural use of livestock and poultry manure. , water bodies, while posing a deep threat to the environment, it will also enter the food chain and constitute a food safety problem. The straw incineration is one of the important causes of air pollution. On th...

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Problems solved by technology

Intermittent operation not only greatly increases material fatigue caused by cyclical thermal stress and leads to possible safety risks, but also leads to adverse results such as reduced operating efficiency and reduced productivity

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