(1) 通风管道系统余热利用。在通风除尘系统设置余热锅炉、热管换热器、冷却排管等，用以发生蒸汽、热水、热风，以求最大限度地利用通风系统的余热，提高能源综合利用效率。

(1) waste heat utilization of ventilation pipe system. In the ventilation and dust removal system, the waste heat boiler, heat pipe heat exchanger, cooling pipe and so on are used to produce steam, hot water and hot air in order to make maximum use of the waste heat of ventilation system and improve the efficiency of comprehensive utilization of energy.

(2) 可变烟气量。不少烟气净化系统随工艺要求的不同，在不同时段产生的烟气量也不同，为了适应这种需要，采用多种不同形式的调速装置，以节约能源，减少通风系统的运行费用。

(2) variable smoke volume. Many flue gas purification systems are different with the process requirements, and the amount of smoke produced in different periods is different. In order to adapt to this need, a variety of different forms of speed control devices are adopted to save energy and reduce the operating cost of ventilation system.

(3) 局部排风罩优化设计。局部排风罩形式的优势直接影响通风管道系统的效果。研究局部排风罩的气流特征、局部排风罩昔日气流的流态与操作工人的关系，设计合适工艺特点与工艺设备的局部排风罩，成为当今主要的研究课题。

(3) optimization design of local exhaust hood. The advantage of partial exhaust hood has a direct effect on the ventilation system. It is a major research topic to study the air flow characteristics of the local exhaust hood, the relationship between the flow patterns of the current air flow in the local exhaust hood and the operating workers, and design the appropriate process features and the local exhaust hood of the process equipment.

(4) 积极研究移动、阵发性尘源的控制技术。对固定恒稳产尘的尘源点已有不少成熟的控制技术。但在黑色冶炼、有色冶炼、金属熔铸、港口装卸、矿山采掘等行业，尚存在大陆的移动、阵发性尘源，这些尘源位置是移动的、阵发性的，瞬时散发浓度很高，分散的面积很广。根据实测统计，这部分尘源所排出的粉尘量往往占上述生产厂或生产工序总排尘量的28%~36%。目前较多的采用全面通风换气，投资太高。如何采取相对节省的投资技术措施，达到区域性的控制是目前通风技术研究的重要课题。

(4) actively study the control technology of mobile and paroxysmal dust sources. There are many mature control techniques for dust sources of fixed constant dust. However, in the industries of black smelting, nonferrous smelting, metal casting, port loading and unloading, mining and mining, there are still the movement and paroxysmal dust sources of the mainland. These dust sources are mobile and paroxysmal, and the instantaneous distribution of the dust is very high and the scattered area is very wide. According to the measured statistics, the amount of dust discharged from this part of the dust source often accounts for 28%~36% of the total discharge volume of the above production plants or production processes. At present, more comprehensive ventilation and ventilation are used, and investment is too high. How to adopt relative saving technological measures to achieve regional control is an important topic in the study of ventilation technology at present.