Preparation device and method of high-purity ammonium bifluoride
A technology for the preparation of ammonium bifluoride and ammonium halide, which can solve the problems of inaccurate measurement of hydrogen fluoride and ammonia, insufficient utilization of reaction heat, and insufficient material conversion rate, etc., to achieve long-term stable operation and stable thermal stress changes , Improve the effect of cooling efficiency
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Embodiment 1
[0041] The specific process steps of preparing high-purity ammonium bifluoride are as follows:
[0042] (1) Prepare for driving and check the integrity of each equipment and pipeline.
[0043] (2) Add water to the tail gas absorption tank to a qualified liquid level, turn on the cooling water, and turn on the fan and circulation pump on the tail gas scrubber 10 .
[0044](3) Turn on the hot water circulation system, send 105°C and 130°C hot water air bags into the desalinated water to 1 / 2 liquid level, turn on the heating steam, turn on the circulating pump to send water to the graphite reactor 7, and press 1°C / min The temperature of the reactor 7 is raised cyclically at the heating rate, and finally the temperature of the straight cylinder reaction section 71 is raised to 105°C, the temperature of the block hole graphite heat exchange section 72 is raised to 130°C, and the pressure of the reactor 7 is controlled below 0.6MPa;
[0045] (4) Open raw material tank 1 to cool bri...
Embodiment 2
[0053] The preliminary work of feeding is the same as that of Example 1. After feeding the double materials, close the valve metering pump to circulate the line, control the feeding amount of HF to 5L / min, and control the feeding amount of gas and ammonia to 169.1m 3 / h, observe the discharge situation, adjust the hot water circulation volume, control the discharge temperature to 132°C, analyze the ammonium bifluoride content of the discharge through sampling, and fine-tune the ammonium gas flow rate to achieve rapid quality compliance.
Embodiment 3
[0055] The preliminary work of feeding is the same as that of Example 1. After feeding the double materials, close the valve metering pump to circulate and pay the line, control the feeding amount of HF to 6L / min, and control the feeding amount of gas ammonia to 202.9m 3 / h, observe the discharge situation, adjust the hot water circulation, control the discharge temperature to 135°C, analyze the ammonium bifluoride content of the discharge by sampling, fine-tune the ammonium gas flow rate, and achieve rapid quality compliance.
[0056] The raw material consumption required by the prepared high-purity ammonium bifluoride of the inventive method is shown in Table 1, as can be seen from Table 1, the high-purity ammonium bifluoride is prepared by the method of the present invention, and the material consumption is lower than the existing liquid phase method and traditional method The gas phase method realizes greater utilization of resources.
[0057] Table 1. Material consumption...
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