Crop straw pretreatment reaction tank

Abstract

The invention discloses a crop straw pretreatment reaction tank. The reaction tank includes a tank body arranged in a clamping sleeve. An upper seal head and a lower seal head are respectively arranged on the upper and lower ends of the tank body. The upper seal head is provided with a feeding port, a material sampling port and an air outlet. An oxygen pipe and a stirring conveying device are arranged in the tank body. A discharging pipe is arranged at the lower end of the tank body. The crop straw pretreatment reaction tank can perform aerobic, micro-aerobic or anaerobic pretreatment on cropstraw to promote the decomposition of lignocellulose, and transport materials in the tank and bio-metabolic heat to an anaerobic fermentation tank through an auger conveying mechanism formed by the combination of a spiral agitator and the discharging pipe so as to realize efficient conversion of anaerobic fermentation of the straw.

Description

technical field [0001] The invention relates to a crop straw resource utilization device, in particular to a crop straw pretreatment reaction tank. Background technique [0002] my country is a large agricultural country, and the annual output of crop straw is about 700 million tons. Due to technical and social reasons, the effective utilization rate of crop straws is less than 30% of the total output, and most of the crop straws are piled up in the fields to rot naturally or be directly burned on the spot, which not only causes serious environmental pollution, but also causes a huge waste of resources. Therefore, increasing the comprehensive utilization of crop straw is of great significance to make up for the shortage of resources in our country and promote the sustainable development of agriculture. [0003] Anaerobic fermentation is one of the most effective methods for processing crop straw. Through the metabolism and energy conversion of microorganisms, low-grade ener...

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Problems solved by technology

[0004] At present, the pretreatment methods mainly include physical methods, chemical methods and biological methods. These methods can improve the anaerobic digestibility and gas production rate of straw, but there are also a series of problems, each with its own limitations.

The physical method has the problem of high energy consumption, and the treatment effect is often closely related to the cost input; although the chemical method is simple and convenient, and the treatment effect is good, it has certain requirements for equipment and there are different degrees of pollution to the environment; From the perspective of cost and equipment, it has unique advantages and will not cause environmental pollution, but the pretreatment effect is low, and high-efficiency biological agents are needed

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