2results about How to "Reduce emissions" patented technology

The utility model discloses a rice screening device which comprises a box body, a motor and a draught fan, the top of the box body is connected with a cover plate through a damping bearing, the top of the cover plate is provided with a feeding port, a screening assembly is arranged in the box body, and a collecting assembly is arranged in the box body. The device is provided with the screening assembly, through the screening assembly, the device can adapt to screening of most rice of different varieties and sizes, targeted adjustment of the rice is achieved, unnecessary harvesting loss is avoided, the screening efficiency is improved to a certain degree, and the practicability of the device is well improved; and secondly, the device is provided with a collecting assembly, through the collecting assembly, the possibility that dust enters the draught fan in the collecting process is reduced, through the acting force of the draught fan, the filtered dust can be collected by the draught fan and fall into a collecting box, and the situation that the dust escapes is reduced to a certain degree.

The application discloses a method for preparing formed fuel by mixing semi-dried sludge and oil-tea camellia fruit hulls, and the method comprises the following steps: (1) washing and drying the oil-tea camellia fruit hulls, then crushing and sieving the oil-tea camellia fruit hulls to obtain oil-tea camellia fruit hull powder; drying high-moisture sludge to obtain semi-dried sludge; (2) baking the oil-tea camellia fruit hull powder under a mixed atmosphere of oxygen and nitrogen to obtain baked oil-tea camellia fruit hulls, or pyrolyzing the oil-tea camellia fruit hull powder under a nitrogen atmosphere to obtain oil-tea camellia fruit hull biochar; (3) mixing and stirring the semi-dried sludge and the baked oil-tea camellia fruit hulls or the oil-tea camellia fruit hull biochar, uniformly placing water, and then preparing formed fuel. The method is simple, easy to operate and low in cost, the prepared formed fuel particles can realize rapid reduction of urban sludge and recycling of energy, and the method has the advantages of low energy consumption, high particle strength, no pollution and the like when the formed particles are prepared.