混合煤气热值实用控制系统

在钢铁联合企业的燃气厂里，为了充分利用能源及减少大气污染，把高炉煤气与焦炉煤气混合后输送给下游的各个煤气用户。混合煤气热值的控制即保持混合煤气的热值为一个恒定值十分重要，因为这直接影响到以混合煤气为燃料的加热炉的燃烧状况。但是，实际情况是在绝大多数的燃气厂中混合煤气的热值没有实现自动控制而是由人工进行配比操作，热值波动较大，导致加热炉难以实现稳定燃烧，影响产品质量：混合煤气加压站操作工人劳动强度大，本文将主要介绍实用煤气热值控制系统，着重介绍热值控制。

A practical control system of the mixed gas calorific value

To utilize the energy source and reduce the atmosphere pollution, the blast furnace gas and coke furnace gas would be mixed according to an appropriate ratio then output it to the heating furnaces in rolling area. The control of the mixed gas calorific value in another word keeping the value a constant is very important to stabilize the combustion of the furnaces in the down stream line production. But nowadays the status is almost that the calorific value is controlled manually not automatically, the follows introduces a practical automation control system of the calorific value of the mixed gas.