Issues with chlorate decomposition tanks
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This post was last edited by sunjl1981 on 2013-1-6 at 20:52. Our facility has newly installed chlorate decomposition tanks, and there is a section of pipeline whose purpose is unclear; I hope everyone can help explain it； Before the brackish water enters the tank, a 50-mm pipe is directly connected to the chlorine outlet pipe of the decomposition tank; I’m not sure what purpose that serves Furthermore, when steam is used to heat the brine and feed it into the tower, heating occurs simultaneously at both the top and bottom of the tower; could this result in low chlorine purity? Also, when no heating takes place, chlorine may flow back and cause corrosion of the steam valves. # + + hcbbs
Could you upload the drawings of your chlorate decomposition device? The chlorate decomposition devices in each plant differ to some extent; for example, the decomposition device I’m aware of doesn’t have any towers, while yours does. If there are blueprints, I believe sailors will be able to solve this problem.
No picture, no truth – please upload the drawings so everyone can see them.
It does corrode steam valves; I’ve encountered this issue before, and I recommend isolating them
That tube is likely the gas pressure balance tube; for heating brackish water, it is recommended to use a heat exchanger for heating
Replace the valve with a fluorinated valve; F46 lining will suffice. Heating the titanium-palladium alloy plate exchanger with saline can prevent steam or non-condensable gases from reducing chlorine purity. That tube is somewhat useful; when acid is added to the brine flowing into the channel, a large amount of chlorine gas is released, which helps to achieve a balance in gas-liquid separation. It can also be omitted.
This post was last edited by tclvjian on 2012-2-11 at 19:43. Could you upload the drawings of your chlorate decomposition device? Different manufacturers have different technical solutions.
There’s only a single-line diagram; I’ll upload it another day to show it – I didn’t bring it back today
Most of those I’ve seen use direct steam heating, but the amount of steam used is relatively small; the temperature ranges from 88 to 90 degrees, with little variation
Plate heat exchangers are recommended for heat exchange, as they ensure safety and uniform heating. Adding baffles appropriately in the decomposition tank will improve the decomposition effect.
The function of the 50 tubes is to provide drainage. Because the chlorine gas produced from chlorates contains a high amount of water. It also serves to balance pressure. Simultaneous heating causes corrosion to the steam pipes, but the extent of this corrosion is minimal as the steam pressure is higher than that of chlorine. It is important to start by introducing steam before introducing chlorine during operation, and to stop the flow of chlorine first before stopping the steam flow when shutting down.