Rotary cement kiln waste heat recoverer with conduit heat pipes embedded
A technology of embedded grooves and heat pipes, applied in the field of waste heat recovery, can solve the problems of low recovery heat transfer efficiency, poor effect, damage to the cement rotary kiln body, etc., and achieve the effect of maintaining normal operation and reducing energy consumption and material consumption
Inactive Publication Date: 2013-12-25
山东省能源与环境研究院
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Problems solved by technology
However, this device can only recover and exchange heat through one working medium, and the working medium flows between the outer sleeve and the surface of the cement rotary kiln body, and directly contacts with the cement rotary kiln body, so the recovery and heat exchange efficiency is low and the effect is insufficient. Good, and have certain damage to the cement rotary kiln body
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[0014] The cement rotary kiln waste heat recovery device with embedded channel heat pipe of the present invention, such as figure 1 As shown, it mainly includes an outer cover 4 , a water wall 2 and a heat exchanger 1 . Both the outer cover 4 and the water wall 2 are hexagonal. The water-cooled wall 2 is arranged on the periphery of the surface of the cement rotary kiln 3 , and there is a gap between the water-cooled wall 2 and the surface of the cement rotary kiln 3 , where the gap forms a first air passage 6 . The outer cover 4 is arranged on the periphery of the water-cooled wall 2 , and a gap is provided between the outer cover 4 and the water-cooled wall 2 , and the second air channel 7 is formed in the gap. The outer cover 4 is provided with an air inlet channel 5 and a cavity communicating with the first air channel 6 and the second air channel 7, and the heat exchanger 1 is arranged in the cavity. The water-cooled wall 2 can be made into two parts symmetrically conne...
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A rotary cement kiln waste heat recoverer with conduit heat pipes embedded comprises an outer cover, a water cooled wall and a heat exchanger. The water cooled wall is arranged on the surficial periphery of a rotary cement kiln, and a clearance is reserved between the water cooled wall and the surface of a rotary kiln to form a first ventilating duct. The outer cover is arranged on the periphery of the water cooled wall, a clearance is reserved between the outer cover and the water cooled wall to form a second ventilating duct, and the first ventilating duct and the second ventilating duct are communicated with each other. The outer cover is provided with an air inlet duct and a hollow cavity communicated with the first ventilating duct and the second ventilating duct, and the heat exchanger is arranged inside the hollow cavity. A working medium channel is arranged inside the water cooled wall, and the working medium outlet of the working medium channel is connected with the heat exchanger. Axial conduit heat pipes are inlaid in the water cooled wall. The rotary cement kiln waste heat recoverer with the conduit heat pipes embedded transmits the heat which is collected on the top portion of the water cooled wall and caused by heat convection inside the water cooled wall downward to achieve the homogenization of the temperature inside the water cooled wall, further achieves the stability of the surficial temperature and normal operation of the rotary cement kiln, and is high in heat recycling exchanging efficiency, and good in effect.
Description
technical field [0001] The invention relates to a device for recovering surface heat of a cement rotary kiln, belonging to the technical field of waste heat recovery. Background technique [0002] The cement industry is an industry with high energy consumption and high pollution. The cement rotary kiln is a typical high energy consumption equipment in the process of dry cement production. The surface temperature of the rotary kiln is relatively high during operation, about 200°C-400°C, and most of the heat is lost in the form of radiation. At the same time, it is necessary to cool the surface of the rotary kiln shell with cold water or cold air. This working method makes the material consumption and brick consumption required in the operation of the cement rotary kiln larger, and also causes a serious waste of energy. [0003] CN102636022A discloses a "Dry Process Cement Rotary Kiln Cylinder Waste Heat Recovery and Heat Exchange Device", which is to have one or more fixed o...
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IPC IPC(8): F27B7/38F27D17/00
CPCY02P10/25Y02P80/15
Inventor 程林杜文静
Owner 山东省能源与环境研究院