The invention relates to the technical field of gas purification and discloses a packing tower for gas purification, which comprises a tower body, an air inlet pipe, a packing layer, a liquid inlet pipe, a water baffle, an air outlet pipe and a sludge pipe, wherein the air inlet pipe is arranged outside the tower body On the one hand, static electricity of solid particles in the waste gas can be eliminated, so that the particles are more convenient in purification, and the safety of the waste gas in treatment is increased; at the same time, the incoming waste gas is converted from low temperature to high temperature, so that the waste gas automatically rises upward upon thermal expansion, and the flow speed of the waste gas is accelerated; and meanwhile, the particles automatically fall downward, so that the tower body maintains a better purification state in use.

Packed tower for gas purification

The invention discloses a furnace gas treatment device and method for a vacuum smelting furnace. The furnace gas treatment device comprises a spray tower connected with the vacuum smelting furnace, adraught fan connected with the spray tower and a chimney connected with the draught fan. A top exhaust port of the vacuum smelting furnace is communicated with an air inlet of the spray tower throughan air inlet pipe, a spray head is arranged in the spray tower and located above an air inlet pipe, an air outlet is formed in a top of the spray tower and connected with an inlet of the draught fan through a first exhaust pipe, an outlet of the draught fan is connected with the chimney through a second exhaust pipe, a precipitator is arranged in the spray tower, and a circulating water pump is arranged outside the spray tower. The device can effectively reduce the emission concentration of harmful waste gas, the emission concentration of cadmium and compounds thereof is reduced to 0.09 mg/m3and is far lower than the national emission standard, the harm of harmful dust to the health of operators is reduced, the pollution of harmful gas to the environment is effectively reduced, and the service life of the furnace is prolonged.

Furnace gas treatment device and method of vacuum smelting furnace

The invention discloses a limestone powder desulfurization and dedusting process. The process comprises the following steps: primary dust removal on flue gas; flue gas desulfurization, and secondary dust removal; limestone powder desulfurization; settling cycle; and flue gas emission. At the same time, a limestone powder desulfurization and dedusting device is disclosed, the limestone powder desulfurization and dedusting device comprises a smoke inlet, a smoke inlet is connected to a dedusting box, the dedusting box is connected to a heat exchange chamber, the heat exchange chamber is connected to a spray tower, a nozzle is arranged in the spray tower, the nozzle is connected to a water tank through a water pipe, an ash bucket is arranged in the spray tower, a reaction tank is arranged atthe bottom of the spray tower, the reaction tank is connected to a sedimentation tank, the sedimentation tank is connected to the water tank through a filter net, a smoke outlet is arranged at the spray tower, a smoke outlet is connected to the heat exchange chamber, and a smoke exhaust outlet is arranged at the heat exchange chamber. The limestone powder desulfurization and dedusting process hassimple process, high efficiency, low cost, and high resource utilization rate, through the use of high temperature in the flue gas by the heat exchange chamber, the circulation of a reaction water supernatant by a circulating pipe is realized, and the resource utilization is increased, desulfurization is carried out by limestone powder, the flue gas reacts thoroughly in the spray tower, and the desulfurization efficiency is high.

Liu Heping

Papers

Limestone powder desulfurization and dedusting process and device thereof