A combined utilization method of straw smoldering and rapid humification and its humus fertilizer product
A humification and smoldering technology, which is applied in the fields of fertilizer treatment control, fertilizer treatment heating/cooling, application, etc., can solve the problems of non-point source pollution, severe influence of phenological factors, slow humification process of straw, etc., and achieve energy reduction Consumption and cost, the effect of eliminating particulate matter pollution
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Embodiment 1
[0039] Such as figure 1 As shown, the straw powder is firstly crushed to obtain straw powder. The particle size of the crushed straw powder is 40-100 mesh; A part of straw powder is mixed with smoldering ash, microbial agent and animal manure to form a mixture. Such as figure 2 As shown, the straw powder in the smoldering furnace is ignited by electric heating to generate hot flue gas, which mixes with air and enters the silo-type composting reactor, and the humification system 2 starts to work. The operation process of the smoldering system 1 and the humification system 2 is controlled by the control system 3, which monitors and adjusts the air velocity and oxygen concentration in the smoldering system 1 in real time, as well as the temperature and ventilation in the humification system 2, so as to keep the smoldering System 1 and humification system 2 run stably.
Embodiment 2
[0041] A combined utilization method of straw smoldering and rapid humification, the method specifically includes the following steps:
[0042] (1) Crushing the straw to obtain straw powder, the particle size of the straw powder is 40-100 mesh;
[0043] (2) Use part of the straw powder as smoldering straw powder, control the mass percentage of moisture in the smoldering straw powder to 20%, and then place it in the smoldering furnace to ensure that the bulk density of the smoldering straw powder is 45kg / m 3 , into the air, adopt the reverse smoldering mode, ignite by electric heating, and keep the air flux on the smoldering surface at 7.0L / (m 2 s), the volume fraction of oxygen in the air is 0.6%, and smoldering ash and hot smoke are obtained after smoldering;
[0044](3) Another part of straw powder is used as humus fertilizer raw material, mixed evenly with smoldering ash, microbial agent and animal manure, and placed in a silo-type composting reactor, wherein the humus fer...
Embodiment 3
[0047] A combined utilization method of straw smoldering and rapid humification, the method specifically includes the following steps:
[0048] (1) Crushing the straw to obtain straw powder, the particle size of the straw powder is 100-160 mesh;
[0049] (2) Use part of the straw powder as smoldering straw powder, control the mass percentage of moisture in the smoldering straw powder to 25%, and then place it in the smoldering furnace to ensure that the bulk density of the smoldering straw powder is 40kg / m 3 , into the air, adopt the reverse smoldering mode, ignite by electric heating, and keep the air flux on the smoldering surface at 8.0L / (m 2 s), the volume fraction of oxygen in the air is 0.5%, and smoldering ash and hot smoke are obtained after smoldering;
[0050] (3) Another part of straw powder is used as humus fertilizer raw material, mixed evenly with smoldering ash, microbial agent and animal manure, and placed in a silo-type composting reactor, wherein the humus f...
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