How to connect the new and old chlorine systems
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This post was last edited by sunjl1981 on 2013-1-6 at 23:33. Our plant has newly installed a second phase of chlor-alkali production facilities: two electrolyzers, two chlorine drying units, and two sets of chlorine delivery systems (turbines). The chlorine gas is fed into a chlorine distribution station after passing through the pumps, from where it is distributed to two sets of chlorine liquefaction units; the waste gas goes into an hydrochloric acid production system. I wonder if there are two systems with the same connection method as ours; what should be noted during operation? The liquid chlorine storage tanks of the other two liquefaction systems do not have balance pipes, which I consider to be inappropriate; however, I’m not sure what the consequences might be. Could any experts give some advice? # ， ， &
Two sets of return pipes should be installed at the distribution station, with automatic control capabilities. To ensure the stability of the chlorine pressure in both electrolysis systems.
I think the design of your company’s chlorine system is quite reliable and easy to operate; many companies these days use such a design. Abbreviation: “Compressed and merged process line”. You mentioned how to control the second floor as well; that is, “by installing two sets of return pipes and enabling automatic control”. If you use a turbine compressor, things get a bit more complicated due to the three return lines, but the principle remains the same. Additionally, you mentioned the issue of no balance tube on the liquid chlorine storage tank. I assume the gas phase in your storage tank is connected to the exhaust gases and not in equilibrium with the elemental chlorine; this is acceptable. This post was last edited by limingshuguang on 2008-2-15 10:22.]
I’m sorry; when I mentioned the “balance tube,” I was referring to the balance in the gas phase of the liquid chlorine storage tank, not the balance between residual chlorine and original chlorine. Is there an imbalance in the vapor phase on the storage tanks of the old and new systems, resulting in greater pressure fluctuations during operation?
Could the tripping of one system affect the pressure fluctuations in another system, leading to a cascade shutdown? May I ask which company within Shandong uses this method?
Why aren’t there any experts? This topic isn’t very interesting
1. Aren’t the exhaust gases from your two systems combined at the exhaust gas distribution station? 2. If one set of the system stops operating, there will be some fluctuations, but they won’t be significant, as the two sets of systems are essentially independent of each other. It is estimated that the outlet pressure of the chlorine compressor will change and decrease; the unit’s own control mechanisms should be able to keep up with this change, so that the pressure does not reach the interlock value set for the inlet pressure. If necessary, switch to manual adjustment.