RU1805264C - Method for processing agricultural waste - Google Patents

Abstract

Application: in agriculture for drying grain, feed and other materials, heat treatment of waste. SUBSTANCE: air necessary for gasification of waste is supplied by a fan to a channel of a gasifier, where it is heated to a temperature of 100-150 ° C, and is distributed into a gasification chamber and a combustion chamber, and also enters a hopper, where simultaneously with flue gases dries waste before gasification and thereby increases their energy value. 1 ill.

Description

The invention relates to drying equipment and can be used in agricultural production for drying grain, feed and other materials.

The aim of the invention is to increase the efficiency of the use of thermal energy obtained from the disposal of plant waste, and to minimize the consumption of liquid fuel when drying agricultural products.

The goal is achieved in that in the method of processing agricultural plant waste by gasifying it, burning the resulting generator gas, taking the heat of the combustion products from the heat exchanger to heat the drying agent and supplying the resulting drying agent to the treatment of the dried product, it is new that leaving gases and warm air generated when passing through the channel of the gasifier are simultaneously directed

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for heating and drying the burned plant waste, while warm air is also supplied to the gasification chamber and to the combustion chamber.

The drawing shows a diagram of a device that implements a method of processing agricultural plant waste, which includes a gasification chamber 1 with a channel for heating air 2, a channel for extracting gas 3, a fan-exhaust fan 4, a burner 5, a combustion chamber 6, a channel for removing products of combustion 7 , air fans 8, 9, a heat exchanger 10, a generator gas storage chamber 11, a dryer 12, a plant waste storage bin 13.

Agricultural waste from the hopper 13 is fed by a screw conveyor into the gasification chamber 1, where it is heated by indirect heating to a temperature of 800-950 ° C. As a result of thermochemical conversion of waste,

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flue gas, which through the duct 3 is supplied by a fan-exhaust fan 4 to a gas-liquid burner 5 and burned in a mixture with warm air in the combustion chamber 6. In this case, the supply of liquid fuel is reduced or completely stopped. Burner 5 burns a controlled amount of liquid or gaseous fuel, or a mixture thereof.

The gasification chamber 1 is located between the outlet of the combustion chamber 6 and the heat exchanger 10.

The products of combustion 1 are fed through a channel into a gasifier, heated to a gasification temperature, then they enter a heat exchanger, where heat is taken out by a drying agent (air), and cooled to a temperature of 150-200 ° С they are discharged to a hopper 13 for heating and drying plant waste to the minimum humidity. The drying agent 9a enters the dryer 12 and is released into the atmosphere 14 after processing.

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Claims (1)

The air necessary for gasification of waste is supplied by the fan 8 to the channel of the gasifier 2, where it is heated to a temperature of 100-150 ° С and distributed to the gasification chamber 1 and the combustion chamber 6, and also enters the hopper 13, where simultaneously with the flue gases dries waste before gasification and thereby increases their energy value. SUMMARY OF THE INVENTION A method for processing agricultural waste, including feeding the waste into a gasifier with air channels, burning the resulting generator gas, taking the heat of combustion products in a heat exchanger to heat the drying agent, and supplying it to the treatment of the dried product, characterized in that, in order to increase the efficiency of using heat energy, flue gases after the heat exchanger and warm air from the air channels of the gasifier are sent to heat and dry the processed waste. H Editor Compiled by A. Andryushchenko Tehred M. Morgenthal Corrector E. Papp Liquid fuel or gas