5 results about "Acid gas" patented technology

The invention discloses a device and method for carrying out low-concentration SO2 smoke desulfurization through alkaline waste liquid. The device mainly comprises a SO2 smoke absorption tower, an electric mist precipitator, an active ore pulp buffer tank, an active ore pulp absorption-liquid buffer tank, a waste electrolyte buffer tank, a waste electrolyte circulating trough and a tail smoke discharging chimney. Acid gas SO2 in the smelting smoke is absorbed two times through alkaline ingredients in active ore pulp, and then the acid gas SO2 in the smelting smoke is further absorbed through alkaline ingredients in waste electrolytes; meanwhile, ore dust in the smelting smoke is removed, the two kinds of waste alkali liquid including the active ore pulp and the waste electrolytes are greatly used, the technological process is simple, running is reliable, the desulfurization effect is remarkable, investment is low, the floor area is small, operation is easy, desulfurization of the huge amount of low-concentration SO2 smoke can be completed only through low cost, the raw material cost of the desulfurization process is reduced, new waste can not be generated, and the aims that through treatment, environment-friendly collected SO2 meets the standard and economy reaches the standard are achieved in the mode that waste is controlled through waste.

The invention relates to a blast furnace gas power generation purifying device and a treatment method thereof, and belongs to the technical field of gas treatment. The blast furnace gas power generation purifying device comprises a power generation unit and a purifying unit, wherein the power generation unit is used for cooling gas in the power generation process; the purifying unit is used for spraying scrubbing liquid to purify the gas, so as to improve the gas purifying effect; furthermore, the acid gas and water in the gas can be effectively removed. The treatment method adopting the powergeneration purifying device is characterized in that the temperature at an inlet of the purifying unit is reduced by the power generation unit; the scrubbing liquid is sprayed into a reaction tower of the purifying unit to scrub the gas; the acid matter and impurity in the gas are removed; the water in the gas is removed by a dewatering device in the purifying unit, so as to improve the gas purifying effect.

The invention relates to a process for the preparation of an olefinic product comprising ethylene and / or propylene from an oxygenate comprising: a) an oxygenate conversion step wherein a gaseous effluent comprising olefins is obtained; b) separation of water from the effluent; c) compression of the effluent; d) acid gas removal from the effluent wherein the water-depleted compressed gaseous effluent is treated with a caustic solution in a caustic tower and a non-aqueous liquid stream comprising one or more aromatic C7+ hydrocarbons is added to the caustic solution to control the formation of red oil; and e) separating the olefinic product from the gaseous effluent treated in step d).