Sodium cyanide storage tank

Abstract

The invention discloses a sodium cyanide storage tank. Half-pipejackets are arranged on the external wall of the sodium cyanide water solution storage tank; upper ends of half-pipes are 100 to 500 mm lower than a highest liquid level of materials; lower ends of the half-pipes are 100 to 500 mm or more apart from a device base plate; the half-pipes are directly welded to a device body; two ends of the half-pipe jackets are respectively welded to a tail end blocking plate; heat exchange medium inlet and outlet pipes with the diameter of 25 to 80 mm are arranged at two ends of the half-pipes. According to the tank for storing sodium cyanide water solution, when the environmental temperature is too low, the half-pipe jacket can be heated through steam or hot water; when the environmental temperature is too high, low temperature cooling water is utilized inside the half-pipe jacket to remove heat of the solution; temperature of the solution inside the sodium cyanide storage tank is controlled by controlling the outside to add different heat exchange mediums, the temperature of the sodium cyanide water solution is maintained to be at 0 to 25 DEG C, and the purpose of safely and stably storing the sodium cyanide water solution is achieved.

Description

technical field [0001] The invention belongs to the technical field of chemical equipment and relates to the storage problem of sodium cyanide aqueous solution, in particular to a sodium cyanide storage tank. Background technique [0002] Sodium cyanide: highly toxic, can produce trace amounts of hydrogen cyanide gas in the air, keep it in a closed and dry place away from light, its aqueous solution will cause its polymerization when it is above 25°C; it may cause its aqueous solution to solidify when it is below 0°C. At present, the general way of storing sodium cyanide aqueous solution in chemical plants is that the outdoor ordinary storage tank is equipped with a canopy to prevent sunlight exposure, and an insulation layer is set to prevent the sodium cyanide aqueous solution from solidifying at low temperature. The disadvantages are: it is greatly affected by external environmental factors, the cost is high, and space is wasted; in addition, at low temperatures, the temp...

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Problems solved by technology

The disadvantages are: it is greatly affected by external environmental factors, the cost is high, and it wastes space; in addition, at low temperatures, it is necessary to increase the insulation thickness to maintain the temperature, which increases the cost.

Another way is the jacketed container storage tank. Since there will be a gas phase space in the jacket, it may lead to an upgrade of the pressure vessel category, which increases the difficulty of the manufacturing process and increases the cost.

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