Design of Furnace Top Coal Gas Left Pressure Power Generation
1 Introduction
Furnace top gas is a kind of clean energy, which is rich in caloric value and widely available. As one of the main sources of energy, coal-fired furnace top gas has long been used for fuel combustion and power generation.However, during combustion of coal, a considerable quantity of carbon-bearing gas, mainly composed of carbon dioxide, carbon monoxide and the low boiling point components like methane, ethylene and propylene, is produced. This gas is usually discharged from the furnace or simply burnt and emitted into the atmosphere. During combustion in the furnace, some gas produced is not completely combusted, while some gas is lost, resulting in the loss of useful energy resources.
Nowadays, in order to better utilize the energy of furnace top gas, the research and application of furnace top gas left pressure power generation has gradually become an important part of energy industry development. This paper will explain the advantage of furnace top coal gas left pressure power generation and analyze the design process of furnace top coal gas left pressure power generation.
2 The Advantages of Employing Furnace Top Coal Gas Left Pressure Power Generation
The energy of coal has always been the main energy source of production and living. As the utilization rate of coal increases, the amount of furnace top coal gas produced has also increased. In addition to being discharged into the atmosphere or used for heating, the high-temperature flammable gas generated during coal combustion can also be used to generate power.
2.1 Utilization of Energy Resource
By utilizing the potential energy of the furnace top gas left pressure, the recovery rate of visible heat energy from furnace top gas can be improved, which can make full use of the energy of the furnace top gas, and ensure that the waste heat of the furnace top gas is not wasted.
2.2 Clean and Efficient
The furnace top coal gas left pressure power station not only makes full use of energy resources, but also reduces environmental pollution. The power generation project of furnace top gas left pressure is to recover the left pressure of coal gas combustion and make good use of it instead of directly discharging it into the atmosphere, thus reducing emissions and environmental pollution.
2.3 Low Operating Costs
The cost of generating electricity by using furnace top coal gas left pressure power station is low. This is mainly because the energy material used by the project is natural energy and the auxiliary fuel is not needed during power generation, which greatly reduces the total production cost.
3 Design Process of Furnace Top Coal Gas Left Pressure Power Generation
3.1 Gas Source Collection
The original gas collected from the furnace top gas left pressure power station needs to be well purged by removing impurities such as dust, particles and sulfur dioxide. The purification of the gas needs to be done by passing it through filters and water scrubbing. The gas needs to be dried with an adsorbent or by passing through molecular sieves after the purification process. After that, the flammable gas is transferred to the storage tank for temporary storage.
3.2 Main Equipment
The main equipment of furnace top gas left pressure power station includes generator, two-stage engine, boiler, gas distributor and compressor. The generator is used to generate electricity which can be connected to the grid. The two-stage engine can be used to convert the furnace top gas energy into mechanical energy and then into electricity. The boiler is used to supply additional energy. The gas distributor is used to evenly distribute the gas in the combustor, while the compressor is used to compress the gas in the gas source tank and transfer it to the combustor.
3.3 Combustion and Heat Transfer
During the combustion process, the furnace top gas needs to be strongly stirred and fully burned. In order to ensure the stability of the combustion process and to increase the efficiency, a certain amount of oxygen can be added to the fuel combustion chamber. The flame control system should also be set up to adjust and control the proper flame temperature. Heat generated during combustion can be used for heating the boiler, which can increase the efficiency of the whole system.
4 Conclusion
Gas left pressure power generation technology is a new type of clean energy technology with higher efficiency and lower pollution. The utilization of gas left pressure power station can not only make fully use of the energy resources, but also reduce environmental pollution. Furnace top coal gas left pressure power station is a useful means to utilize the energy of furnace top coal gas. The design process of furnace top coal gas left pressure power station includes gas source collection, selection and configuration of main equipment and combustion and heat transfer. It is characterized by low cost, high efficiency and high environmental protection. The wide application of furnace top coal gas left pressure power generation will profoundly promote the rational utilization of energy and the development of green energy.
