A kind of organic fertilizer drying fermentation process

Abstract

The invention discloses an organic fertilizer drying and fermentation process, which sequentially performs pre-drying treatment on materials through a pre-dryer, drying treatment through a dryer, and fermentation treatment through a fermentation machine; an air energy heat pump is set to make the air The energy heat pump and the dryer form the first circulation loop to collect or generate the heat required for drying, so that the temperature in the dryer can be maintained at the preset temperature range; at the same time, the air energy heat pump and the fermentation machine form the second The second circulation loop is to collect or generate the heat required for fermentation, so that the temperature in the fermentation machine is maintained at a preset temperature range; supply oxygen to the fermentation machine, and at the same time perform exhaust gas treatment on the air in the second circulation loop And discharge to the outside; heat is collected from the waste gas discharged through the second circulation loop, and the heat is sent to the auxiliary material in the pre-dryer for drying. Using the drying and fermentation process can greatly improve the utilization rate of energy.

Description

technical field [0001] The invention relates to the technical field of organic fertilizer production, in particular to an organic fertilizer drying and fermentation process. Background technique [0002] 70% of the traditional large-scale coarse composting production methods use the tank fermentation process, 20-30% use the strip stacking process, and small-scale composting adopts reactor composting methods such as tower type, drum type, and bin type. In the traditional tank-type fermentation process, the materials are stacked in the fermentation tank, the oxygen required by the materials is provided through the blower system below, and the materials are turned and shifted through the turning and throwing machine. The traditional process has a low degree of automation and a long fermentation period, which generally takes about 15 days. The decomposing efficiency is low, and secondary aging is required, and the aging time is about 30 days. The trough process is an open proce...

AI Technical Summary

Problems solved by technology

However, the oxygenation efficiency of the tank fermentation process is low, and the energy consumption of turning and shifting is large

The fermentation tank is an open process, and the malodorous gas generated during the fermentation stage permeates the entire workshop. The workshop environment is harsh, and it is difficult to recover and purify the malodorous gas.

Recycling is difficult, purification is even more difficult, and it has a great impact on the human body and the environment

The trough fermentation process requires high ventilation, large heat loss, poor fermentation reaction balance, low reaction rate, low degree of decomposition, and generally requires secondary aging

Moreover, there are many blockages and faults in the ventilation system, which makes it more difficult to effectively control the fermentation process.

[0005] In the existing organic fertilizer drying and fermentation process, when the organic fertilizer is fermented and produced, the heat generated in the fermenter is not fully utilized, and is generally discharged directly to the outside, resulting in a large waste of energy and increasing the production cost in disguise.

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