211results about How to "Increase dryness" patented technology

The invention discloses an integrated treatment method for thickening, drying and purifying municipal sludge. The method comprises the steps as follows: the municipal sludge is concentrated in a sludge concentrating pool, and the concentrated submerged sludge is transported into a decanter centrifuge; a polyacrylamide cationic flocculating agent in a medicine adding box is added into the decanter centrifuge, wherein 2-3g of polyacrylamide is added into each kilogram of the submerged dried sludge, and solid particles in the submerged sludge are bonded together to form a plurality of particle groups, so that solid is separated from liquid to form a supernate and a mud cake; the mud cake is transported into a sludge treating place by a shaftless screw conveyer, and the supernate is transported to a sludge concentrating pool through a clear liquor pipeline by a water pump in a reflowing way; the supernate in the sludge concentrating pool is transported to the bottom of a filter by an overflowing groove through a pipeline; and the solid is separated from the liquid due to the centrifugal precipitation principle of the decanter centrifuge, the sludge with different charging concentrations is treated by less flocculating agent, and the physical filtering function and the physical absorbing function of the filler are abundantly acted, so that the municipal sludge and the wastewater produced by the municipal sludge can be synchronously treated.

The invention provides a sludge rapid drying device with a crushing device, wherein the sludge rapid drying device includes a tank body; the interior of the tank body is separated into a crushing cavity and a drying cavity through a separating plate; a crushing device is arranged in the crushing cavity; an impurity discharge pipe is arranged on the side wall of the bottom of the crushing cavity; aspiral stirrer and an air-blast drying device are arranged in the drying cavity; the spiral stirrer is composed of a spiral stirring blade, a retaining side and a scraping plate; the air-blast dryingdevice is composed of a transmission box, a second motor, a gas intake pipe, a second rotating shaft and a jet plate; an electric heater is inlaid on the side wall of the drying cavity; a discharge pipe is arranged on the side wall of the bottom of the tank body; a jacket is arranged on the outer surface of the tank body; the side wall of the bottom of the jacket is provided with a dehumidification device. Agglomerated sludge is subjected to crushing treatment by the crushing device; the sludge is circulated and stirred by the spiral stirrer; hot air and the sludge make even contact by the air-blast drying device, so that the sludge is evenly dried.

The invention relates to a brown coal upgrading-power generation co-production system. The brown coal upgrading-power generation co-production system is characterized in that the system comprises a raw coal crusher and a flue gas drier which is connected with the raw coal crusher, a coal outlet of the flue gas drier is connected with a coal inlet of an intermediate wall type roller dryer, a gas inlet of the flue gas drier is connected with a flue gas outlet of a boiler through a pipeline, a gas outlet of the flue gas drier is connected with a flue gas treatment system, a heating unit pipe bundle of the intermediate wall type roller dryer is connected with a steam turbine through the pipeline, extracted steam from the steam turbine flows through the heating unit pipe bundle of the intermediate wall type roller dryer, dries raw coal in the intermediate wall type roller dryer and then is input to a heat regenerative system through the pipeline, the dried upgrading coal is output through a conveyer device, and tail gases output by the intermediate wall type roller dryer are used for preheating air supplied by a boiler in a tail gas air boiler through the pipeline. For the brown coal upgrading-power generation co-production system, flue gas discharged by the boiler is used for carrying out first-stage drying on the brown coal in the flue gas drier, and then extracted steam from the steam turbine is used for carrying out second-stage drying on the brown coal, thereby enabling the brown coal to be at a higher drying degree.