Control system and method of high-volatility-component pulverized coal preparation and drying technology
A high-volatile, drying process technology, used in the preparation of bulk/powder fuel, combustion methods, drying of solid materials, etc., can solve the problems of non-automatic control, fluctuating production drying load, and high ignition point, avoiding heat waste, The effect of reducing exhaust emissions and controlling process efficiency
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Embodiment 1
[0066] A 400t / d dry pulverized coal gasification plant, wherein the high volatile pulverized coal preparation and drying control system of the present invention provides pulverized coal with qualified particle size and moisture for the gasification unit in the plant. The raw coal is lignite coal, dry basis The volatile matter is 42.3%, the moisture content is 28.3%, and the moisture content of the pulverized coal is controlled at 2% after drying.
[0067] The specific pulverized coal preparation and drying steps are as follows:
[0068] (1) After coal pulverization, drying and feeding test run, through the online monitoring of the thermometer I value of the finished coal powder in the ash hopper of the coal powder collector, and real-time monitoring of the temperature value, the inert gas at the outlet of the coal powder collector is relatively online The relative humidity value of the humidity analyzer (RH%); when the value of the online relative humidity analyzer > the prese...
Embodiment 2
[0076] A 700t / d dry pulverized coal gasification plant, wherein the high volatile pulverized coal preparation and drying control system of the present invention provides pulverized coal with qualified particle size and moisture for the gasification unit in the plant. The raw coal is bituminous coal, dry basis The volatile matter is 7.27%, the moisture content is 6.1%, and the moisture content of pulverized coal is controlled to 2% after drying.
[0077] The specific pulverized coal preparation and drying steps are as follows:
[0078] (1) After coal pulverization, drying and feeding test run, through the on-line monitoring of the thermometer I value of the temperature of the finished coal powder in the ash hopper of the coal powder collector, and real-time monitoring of the temperature value, the outlet of the coal powder collector circulates inert gas The relative humidity value of the online relative humidity analyzer (RH%); when the value of the online relative humidity ana...
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