A countercurrent sludge drying device

Abstract

The invention discloses a counter-current sludge anhydration apparatus, which comprises an anhydration outer cylinder, a rotor, an inlet pipe and a frame used for supporting and positioning the anhydration outer cylinder, the anhydration outer cylinder is horizontally arranged, an inlet chamber is arranged at one end of the anhydration outer cylinder, a settling chamber is arranged at the other end, a heat flue gas inlet is arranged at top of the inlet chamber, a moisture flue gas outlet is arranged at top of the settling chamber, a center gas outlet is arranged at center position at one end of the anhydration outer cylinder on the settling chamber, the rotor is arranged in the anhydration outer cylinder, the rotor passes through the center gas outlet, a rotor inner core is arranged on the rotor, a feed inlet is arranged at one end of the rotor close to the settling chamber, a discharge hatch is arranged at bottom of the settling chamber, several stirring push bars are arranged at external surface of the rotor, a circulation interval is provided between the top of the stirring push bar and the inner wall of the anhydration outer cylinder, and a rotor motor capable of driving the rotor to rotate is arranged on the frame. The counter-current sludge anhydration apparatus is capable of effectively performing anhydration processing on sludge, and has the advantages of high anhydration efficiency and good anhydration effect.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, in particular to a countercurrent sludge drying device. Background technique [0002] A large amount of sludge will be produced in the process of sewage treatment, and the treatment method of these sludges is usually incinerated in a furnace, and the hot flue gas discharged after incineration is about 300 to 400 degrees. Since the initial moisture content of the sludge is about 75% to 85%, the water content is too high to be incinerated. Therefore, before the sludge incineration, the sludge needs to be dried first. After the treatment, the moisture content is greatly reduced. , and then the incineration operation can be carried out. The current sludge drying treatment methods usually adopt centrifugal drying or electric heating. For centrifugal drying, the cost of drying is low, but the degree of water reduction in sludge is limited. After centrifugal treatment, the sludge still has a m...

AI Technical Summary

Problems solved by technology

The current sludge drying treatment methods usually adopt centrifugal drying or electric heating. For centrifugal drying, the cost of drying is low, but the degree of water reduction in sludge is limited. After centrifugal treatment, the sludge still has a moisture content Higher, so it can't meet the combustion requirements; for electric heating, although the drying effect is better, it consumes extra energy, resulting in higher cost

Therefore, although a certain degree of dehydration and drying can be achieved in the prior art, there are still many deficiencies in terms of drying efficiency, degree of drying, uniformity of drying, etc.

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