47results about How to "Zero consumption" patented technology

The invention provides a process technology for granulating blast-furnace slag and utilizing waste heat. The process technology is characterized by comprising the following steps of: performing primary cooling and triple granulation on high-temperature molten slag from a blast furnace in a slag primary cooling device to form fine granules with diameter of less than 3mm and temperature of about 800-1,000 DEG C; discharging the fine granules through a high-temperature slag discharge valve; entering a slag basket and conveying to the upper part of a slag secondary cooling device; falling to the lower part of the slag secondary cooling device along a plurality of layers of baffle heat exchange components which are arranged in the slag secondary cooling device; and cooling to about 200 DEG C and discharging through a low-temperature slag discharging valve, wherein waste heat of normal pressure steam of 200 DEG C can be recovered by the slag primary cooling device; and waste heat of hot circulating air of over 600 DEG C can be recovered by the slag secondary cooling device. The invention provides equipment for granulating blast-furnace slag and utilizing waste heat. The equipment mainlycomprises the slag primary cooling device, the slag secondary cooling device, a waste heat boiler and the like. The process technology and the equipment have the advantages of good granulation effectof the molten slag, small and uniform size of slag granules, almost zero new water consumption and low environmental pollution.

The invention discloses a method for recovering lead from lead-containing waste, comprising the following steps: 1) reacting the lead-containing waste with a complexing agent aqueous solution, so that the lead oxide and / or lead sulfate in the lead-containing waste are completely dissolved, and the reaction After finishing, separate the supernatant containing lead ion and do not contain lead salt precipitate; 2) react the supernatant with precipitant, make the lead ion in the supernatant completely precipitate, and separate the lead salt precipitate and after the reaction finishes. Regenerating the complexing agent aqueous solution; 3) dissolving the lead-containing salt precipitation with the electrolyte A aqueous solution, so that the lead-containing salt precipitation is completely dissolved, and after the reaction finishes, the lead-containing electrolyte B and the precipitation agent are produced; Reclaim the precipitation agent; and Lead-containing electrolyte B is subjected to electrolytic reaction to obtain metal lead, oxygen and regenerated electrolyte A. The complexing agent, the precipitating agent and the electrolyte A used in the recovery process of the method of the present invention can be recycled and used repeatedly, which conforms to the characteristics of atomic economic reaction, thereby realizing zero consumption and zero discharge, and saving production costs.

The invention discloses an optimization process of vacuum potassium carbonate method coke oven gas desulfurization. The process comprises the following steps: shunting regenerated potassium carbonate barren liquor, conveying a part of potassium carbonate barren liquor to the lower segment of a desulfurizing tower to come into reverse contact with coke oven gas flow to be recycled; and conveying the other part of the regenerated potassium carbonate barren liquor to the upper segment of the desulfurizing tower to come into reverse contact with coke oven gas to be washed for the second time so as to be recycled. A washing liquid waste outlet at the bottom part of the upper segment of the desulfurizing tower in the equipment is communicated with the liquid return opening of an alkaline tank, and the input end of the alkaline tank is communicated with a barren liquor outlet at the bottom part of a regenerating tower. In the invention, the potassium carbonate barren liquor is used for replacing the alkaline washing segment NaOH to reduce the NaOH consumption to zero on the condition that the H2S content in the coal gas reaches the standard, so that the production cost is greatly reduced; and meanwhile, the dosage of the desulfurization liquid waste generated by the original alkaline washing segment is reduced to zero, and the total yield of the desulfurization liquid waste is reduced by more than 80%, so that the environmental pollution is reduced.

The invention discloses a preparation system of renewable energy sources. The system comprises a biomass energy generator, a solar heat collector, a photovoltaic power generation device and a slag material treatment system, wherein the biomass energy generator comprises a tank body with a charging opening and a gas collecting bag at the top part, a heat exchange tube arranged at the lower part of the inner cavity of the tank body, a slag slurry lifting pump arranged at the bottom of the inner cavity of the tank body, and a bubbler arranged at the upper part of the inner cavity of the tank body; the outlet of the slag slurry lifting pump is communicated with a slag liquid separator by virtue of a pipeline; the inlet of the bubbler is communicated with the upper part of the slag liquid separator by virtue of a bubbling booster pump; the gas collecting bag of the tank body is communicated with a purification chamber of a biomass energy purifier; a slag hole of the slag liquid separator is engaged with the feeding end of a kong water conveying belt; the discharging end of the kong water conveying belt is engaged with the feeding port of a slag slurry dryer; the bottom of the purification chamber of the biomass energy purifier is communicated with an alkaline solution tank by virtue of the pipeline, and a combustible gas outlet pipe is arranged at the top of the purification chamber of the biomass energy purifier. The preparation system disclosed by the invention has the advantages of integrating solar energy and biomass energy and realizing zero pollution, zero emission and zero consumption.