针对现有技术存在的不足,本发明的目的在于,提供一种利用氢氧化钾连续化处理废金属钠的装置及工艺,解决现有技术中生产效率不足的技术问题。
In view of the shortcomings of the prior art, the invention aims to provide a device and process for continuously treating waste metal sodium by using potassium hydroxide, so as to solve the technical problem of insufficient production efficiency in the prior art.
本发明具有如下技术特征:
The invention has the following technical features:
所述的反应器采用管式反应器;所述的分离器采用管式分离器;所述的氢氧化钾预热器采用管式预热器。
The reactor adopts a tubular reactor; The separator adopts a tubular separator; The potassium hydroxide preheater adopts a tubular preheater.
所述的多个并联的熔融废金属钠高位罐通过换热器与废金属钠进料口相连。
The plurality of parallel high-level molten waste metal sodium tanks are connected with the waste metal sodium feed port through a heat exchanger.
所述的氢氧化钾预热器的出料口与氢氧化钾进料口通过倒u型连接管相连。
The outlet of the potassium hydroxide preheater is connected with the potassium hydroxide inlet through an inverted U-shaped connecting pipe.
所述的反应器和分离器与一个液封器相连,所述的氢氧化钾预热器与另一个液封器相连。
The reactor and separator are connected with a liquid seal, and the potassium hydroxide preheater is connected with another liquid seal.
本发明还保护一种利用氢氧化钾连续化处理废金属钠的工艺,该工艺采用如上所述的利用氢氧化钾连续化处理废金属钠的装置。
The invention also protects a process for continuously treating waste metal sodium with potassium hydroxide, which adopts the device for continuously treating waste metal sodium with potassium hydroxide as described above.
所述的氢氧化钾含量大于95wt.%;所述的废金属钠的预热温度保持在103~450℃,氢氧化钾的预热温度450~580℃,反应温度450~580℃,反应体系压力为常压。
The potassium hydroxide content is greater than 95wt.%; The preheating temperature of the waste metal sodium is maintained at 103 ~ 450 ℃, the preheating temperature of potassium hydroxide is 450 ~ 580 ℃, the reaction temperature is 450 ~ 580 ℃, and the pressure of the reaction system is normal pressure.
所述的废金属钠、氢氧化钾是在惰性气体保护下先提升高位罐再依靠重力输送反应体系,称重计量;所用惰性气体为氮气、氩气。
The waste metal sodium and potassium hydroxide are first lifted to the high-level tank under the protection of inert gas, and then transported to the reaction system by gravity for weighing and metering; The inert gases used are nitrogen and argon.
所述的废金属钠与氢氧化钾的摩尔比为1:1~1:3。
The molar ratio of waste metal sodium to potassium hydroxide is 1:1 ~ 1:3.
所述的利用氢氧化钾连续化处理废金属钠的装置采用纯镍或镍合金制成。
The device for continuously treating waste metal sodium with potassium hydroxide is made of pure nickel or nickel alloy.
所述的利用氢氧化钾连续化处理废金属钠的装置的加热方式为电加热、燃气加热、燃油加热。
The heating mode of the device for continuously treating waste metal sodium with potassium hydroxide is electric heating, gas heating and fuel oil heating.
本发明与现有技术相比,具有如下技术效果:
Compared with the prior art, the invention has the following technical effects:
(ⅰ)本发明采用一种连续化处置方法,适合所有废金属钠,也包括含金属钾的废金属钠,不仅将钠而且将废料中含有的金属钾也转变成更高价值的金属钾,反应过程可控,更加稳定,显著提高了生产效率。
(I) the invention adopts a continuous treatment method, which is suitable for all waste metal sodium, including waste metal sodium containing metal potassium. It not only converts sodium, but also metal potassium contained in the waste into metal potassium with higher value. The reaction process is controllable, more safe and stable, and significantly improves the production efficiency.
(ⅱ)本发明通过连续式自溢流设计使反应过程中产生的氢氧化钠和氢氧化钾等的混合物可连续导出反应体系,为生产过程连续操作奠定了基础,避免了间歇操作出料过程中的危险性及惰性气体反复置换的繁锁过程。
(II) through the continuous self overflow design, the mixture of sodium hydroxide and potassium hydroxide produced in the reaction process can be continuously exported to the reaction system, which lays a foundation for the continuous operation of the production process, and avoids the danger in the intermittent operation discharge process and the complicated process of repeated replacement of inert gas.
(ⅳ)本发明的工艺过程中产生的氢氧化钠和
氢氧化钾等的混合物可作为碱用于工业炉窑烟气脱硫、脱硝等。
(IV) the mixture of sodium hydroxide and potassium hydroxide produced in the process of the invention can be used as alkali for industrial furnace flue gas desulfurization, denitration, etc.
(ⅲ)本发明将危险废物转换为产物,本发明的工艺过程中不产生废气、废水,避免了其它处置方法产生二次污染的问题。
(III) the invention converts hazardous wastes into safe products. The process of the invention does not produce waste gas and waste water, and avoids the problem of secondary pollution caused by other disposal methods.
(ⅴ)可以通过设计连续反应器的数量、控制原料进料速度等设计处置规模,或灵活安排处置量,完全实现自动化。
(V) the safe disposal scale can be designed by designing the number of continuous reactors and controlling the feed rate of raw materials, or the disposal volume can be flexibly arranged to fully realize automation.
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