Waste heat comprehensive utilization system for rotary kiln

Abstract

The invention relates to a waste heat comprehensive utilization system for a rotary kiln. The waste heat comprehensive utilization system for the rotary kiln comprises a plurality of supporting piers,and further comprises a heat collecting mechanism; the heat collecting mechanism is connected with a heat load; the heat collecting mechanism comprises supporting shafts each of which is rotatably supported between adjacent two supporting piers; the waste heat comprehensive utilization system for the rotary kiln further comprises two heat collecting plates hinged to the supporting shafts; each heat collecting plate comprises a heated arc plate arranged on a rotary kiln body and a control arc plate which is integrally arranged on the heated arc plate; a plurality of gaps are formed in the control arc plate; the two heat collecting plates on the same supporting shaft are arranged in a cross manner; the heat collecting mechanism is connected with a balance device; a heat absorbing pipe usedfor absorbing heat is arranged on the heated arc plate; and a power device is mounted between the two control arc plates on the same supporting shaft. According to the waste heat comprehensive utilization system for the rotary kiln has the effects of changing the heat collecting capacity of the heat absorbing pipe according to seasons and changing the radiating performance of the rotary kiln through the two heat collecting plates hinged to the supporting shaft by controlling the opening degree of the heat collecting plates by means of the power device.

Description

technical field [0001] The invention relates to the technical field of waste heat utilization of a rotary kiln, in particular to a comprehensive utilization system of waste heat of a rotary kiln. Background technique [0002] Rotary kiln is an important equipment in cement plant, used for calcining cement clinker. A rotary kiln is generally composed of a cylinder, a supporting device, a supporting device with retaining wheels, a transmission device, a movable kiln head, a kiln tail sealing device, a coal injection pipe device, a heating device and other components. During cement production, the cement raw material is sent into the kiln through the coal injection pipe device, the heating device heats the temperature in the kiln to above 1000 degrees, and the power transmission device drives the cylinder to rotate so that the raw material in the kiln is gradually calcined into clinker . During the calcination process of raw materials, the outer wall of the rotary kiln cylind...

AI Technical Summary

Problems solved by technology

[0005] Although this waste heat recovery device on the outer wall of the cement rotary kiln can recover and utilize the waste heat of the rotary kiln, the relative position of the heat collector and the rotary kiln is fixed, and the waste heat recovery capacity of the heat collector to the rotary kiln in winter and summer is almost Similarly, the amount of waste heat recovery cannot be adjusted according to seasonal heat load changes, and the heat collector is covered on the outer wall of the rotary kiln, which usually has a great impact on the heat dissipation capacity of the rotary kiln in summer

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