Safe operation system of heat exchanger of risers for coke oven

Abstract

The invention belongs to the technical field of heat exchanger equipment, and relates to a safe operation system of a heat exchanger of risers for a coke oven. The system comprises wall temperature monitoring devices, over-temperature and over-pressure relief devices, flow monitoring devices and a control system. The heat exchanger of the risers comprises a barrel with a certain wall thickness, each wall temperature monitoring device comprises an upper temperature measuring element and a lower temperature measuring element, and the upper temperature measuring elements and the lower temperaturemeasuring elements are arranged in the barrel wall of the barrel. Each over-temperature and over-pressure relief device comprises a pressure measuring device mounted on the barrel and a relief device. Each flow monitoring device comprises a flow monitoring element and a water inlet adjusting valve set, and the control system is electrically connected with the upper temperature measuring elements,the lower temperature measuring elements, the pressure measuring devices, the relief devices, the flow monitoring elements and the water inlet valve adjusting sets. The safe operation system can effectively monitor the internal environment and the external environment of the heat exchanger of the risers, effectively prevent dry burning, over-temperature and other conditions, guarantee safe and reliable operation of the heat exchanger of the risers and improve the safety and stability of a heat exchange device.

Description

technical field [0001] The invention belongs to the technical field of heat exchanger equipment, and relates to a coke oven raw gas waste heat recovery and utilization system in the coking industry, in particular to a safe operation system for a coke oven riser heat exchanger. Background technique [0002] The coking process is mainly that the coking coal is isolated from the air and heated to dry distillation in the coke oven to produce coke. At the same time, a large amount of volatilized raw gas is produced. The sensible heat brought out by the 950-1050 ℃ red coke introduced from the coke oven carbonization chamber accounts for the cost of the coke oven. 37% of heat; 650~800℃ coke oven waste gas brings sensible heat to account for 36% of coke oven output heat; Heat loss accounts for 10% of the coke oven expenditure heat. [0003] In order to recover the heat of high-temperature raw gas, a riser heat exchanger is used in the prior art to exchange heat with demineralized w...

AI Technical Summary

Problems solved by technology

However, due to the special working conditions of coke oven production, affected by factors such as high temperature, dust, and gas, most waste heat utilization systems for raw coal gas are relatively simple

In particular, the riser tube is usually equipped with surface temperature measurement, but it is impossible to understand the abnormal conditions such as water leakage and dry burning inside the riser tube heat exchanger, and the surface temperature of the riser tube cannot accurately reflect the temperature of the inner tube, and the actual temperature of the inner tube cannot be determined. Hidden danger

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