The invention discloses an aluminum electrolytic cell closed gas collecting device. At least two electrolytic chambers are formed inside an aluminum electrolytic cell through an anode and a cathode; the anode is a self-baking anode, and an anode paste discharging system is arranged above the anode; three groups of flue gas gathering pipelines are arranged on the aluminum electrolytic cell, the first-stage flue gas gathering pipeline directly communicates with an inner space of a cell body, the second-stage flue gas gathering pipeline extends to the position, above the anode, inside the cell body, and the third-stage flue gas gathering pipeline extends into the cell body and is in butt joint with an anode paste feeding port in the top of the self-baking anode through the anode paste discharging system; and the aluminum electrolytic cell is provided with a two layers of sealing structures including the outer sealing structure and the inner sealing structure. By means of the aluminum electrolytic cell closed gas collecting device, the centralized treatment and recovery of the exhaust gas and the waste heat generated by the aluminum electrolytic cell adopting the multiple continuous operation chambers are realized, the ultra-low controllable discharge of air pollutant in the electrolytic cell is realized, the heat preservation state of the electrolytic cell is improved, the heat loss of the electrolytic cell is reduced, and the energy efficiency level of the electrolytic cell is effectively increased.

Aluminum electrolytic cell closed gas collecting device

The invention provides a disposal method and system for molten salt electrolysis tail gas. The disposal method for the molten salt electrolysis tail gas comprises the following steps of carrying out preliminary dust removal on the tail gas generated by molten salt electrolysis, then carrying out water spraying for washing, conducting water-gas separation on the washed gas, and then performing adsorption disposal. The disposal method for the molten salt electrolysis tail gas adopts an external alkali neutralization approach; when a liquid in a water washing spray tower reaches certain acidity,the acid liquid in the water washing spray tower is discharged into a sedimentation tank, the sedimentation tank is utilized to add alkali to carry out acid-alkali neutralization with the acid liquid,and the gas obtained after spraying and washing is subjected to water-gas separation disposal and finally discharged after being adsorbed by an adsorption tower, so that the requirement of tail gas disposal is met. According to the method, a spray circulating system is prevented from being blocked by sediment generated by neutralization of acid and alkali in the water washing spray tower. Compared with a traditional tail gas treatment method, the disposal method has the advantages that because of external acid-base neutralization, the problem of blockage of the circulating system of the waterwashing spray tower is avoided, and a better continuous automated production effect is achieved.

Disposal method and system for molten salt electrolysis tail gas

The invention discloses a device for solving easy clogging of an alkali washing tower during spraying. The device comprises double alkali pumps, double tubes are led out from the double alkali pumps,and are respectively connected to a pipeline 1, a single tube is led out from the double alkali pumps, and is connected to a pipeline 2, one end, away from the double alkali pumps, of the pipeline 1 is communicated with a movable alkali solution filter, one end, away from the pipeline 1, of the movable alkali solution filter is communicated with the alkali washing tower, the pipeline 1 is communicated with an alkali tank, the input end and the output end of the movable alkali solution filter are respectively connected to a bypass liquid tube, a sprayer is arranged on the inner wall, close to the top, of the alkali washing tower, and a pipeline 3 is communicated between the alkali tank and the alkali washing tower. The device effectively prevents the clogging of spray nozzles, and eliminates severe loss caused by shutdown treatment due to no effective treatment measures during severe clogging of the nozzle.

Device for solving easy clogging of alkali washing tower during spraying

The utility model provides an electrolytic aluminum sulfur dioxide tail gas processing device, its characterized in that includes prevent suck -back jar, alkali lye pond, spray tower, adsorption tanksthrough what the flue connected gradually, prevents that suck -back jar mounting height all is higher than the alkali lye pond, and the upper end in alkali lye pond is connected in the spray tower lower extreme through the tobacco pipe, and spraying tower side wall upper end is connected with adsorption tanks through the flue, and the spray tower bottom is through the pipeline and follow ring groove connection, the middle part is provided with atomizer in the spray tower, and atomizer is connected to spray liquid tank bottoms portion, and spray liquid tank deck portion is through the pipelineand follow ring groove connection, be provided with two foraminiferous filters in adsorption tanks, loaded adsorbing medium between two filters. This electrolytic aluminum sulfur dioxide tail gas processing device has adopted tertiary sulfur dioxide absorption processing system, and the absorption is handled including the alkali lye pond, spray tower atomizing absorption handles and absorption ishandled, and the sulfur dioxide tail gas treatment is efficient, and the tail gas after handling can directly discharge.

Electrolytic aluminum sulfur dioxide tail gas processing device

The utility model provides an electrolysis trough gas -collecting device, includes the gas collecting channel, the inside gas collecting chamber that is equipped with of gas collecting channel, gas collecting chamber be to having the discharge of a plurality of bottoms for the wide -mouth, be equipped with in the discharge through the wire respectively with lie in flow valve and the flowmeter thatthe PLC controller on the gas collecting channel is connected, the flow valve lies in the flowmeter below, gas collecting channel middle part top is connected with the blast pipe, blast pipe inside is equipped with suction fan, blast pipe end connection gas cleaning ware. The utility model discloses a discharge of wide -mouth is favorable to the interior gaseous collection of electrolysis trough,improves dangerous gas and gets rid of efficiency, through gas flow in the control of flow valve and flowmeter and the monitoring discharge, make each discharge below negative pressure balanced, reduce thermal loss in the electrolysis trough, the energy saving, blast pipe end connection gas cleaning ware can reduce air pollution with discharging behind the harmful gas cleaning who collects.

Wang Qingxuan

Papers

Electrolytic aluminum sulfur dioxide tail gas processing device

Electrolysis trough gas -collecting device