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Liquid bromine metering device

A metering device and liquid bromine technology, applied in liquid bottling, packaging, liquid treatment, etc., can solve the problems of liquid bromine leakage, affecting the control level of the bromination device, the quality of brominated products, and the low measurement accuracy of the metering pump. and low running costs

Active Publication Date: 2014-02-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, it is necessary to use a diaphragm pump made of a material resistant to liquid bromine corrosion, which leads to high costs
At the same time, because there is no quantitative index for the corrosion of liquid bromine on the material of the metering pump, the reliability of the metering pump cannot be effectively guaranteed
Once liquid bromine leaks, the consequences will be very serious
In addition, the measurement accuracy of the metering pump actually used is not high, and the measurement error is as high as more than 15%, which seriously affects the control level of the bromination unit and the quality of the bromination product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] In this example use figure 1 The shown liquid bromine metering device includes a hollow glass interface partition as an interface partition accessory.

[0094] Cylindrical liquid bromine metering tank 1A is made of stainless steel lined with polytetrafluoroethylene, with a volume of 5m 3 , with an aspect ratio of 5. The hollow glass interface separator is non-magnetic, and its overall density is 1.80kg / L. The metering pump 7A is a plunger pump with a nominal accuracy of ±1%. A flow meter (not shown) is provided between the valve 15A and the bromine demand device 5 to measure the liquid bromine flow and its fluctuation on-line.

[0095] Liquid bromine is injected in the liquid bromine measuring tank 1A with the flow rate of 250kg liquid bromine / hour. When liquid bromine reaches 90% by volume of liquid bromine metering tank 1A, stop injecting liquid bromine in liquid bromine metering tank 1A.

[0096] The distilled water is metered into the liquid bromine metering ta...

Embodiment 2

[0099] In this example use figure 2 The liquid bromine metering device shown does not include an interface separation accessory within it.

[0100] Cylindrical liquid bromine measuring tanks 1B and 1C are made of glass-lined stainless steel with a volume of 5m 3 , with an aspect ratio of 2. The metering pumps 7B and 7C are plunger pumps with a nominal accuracy of ±1%. A flow meter (not shown) is provided between the valves 15B, 15C and the bromine demand device 5 to measure the liquid bromine flow and its fluctuation on-line.

[0101] Liquid bromine is injected in the liquid bromine metering tank 1B, 1C with the flow rate of 250kg liquid bromine / hour. When liquid bromine reaches 95% by volume of liquid bromine metering tank 1B, 1C, stop injecting liquid bromine in liquid bromine metering tank 1B, 1C.

[0102] The distilled water is metered into the liquid bromine metering tanks 1B and 1C by metering pumps 7B and 7C at 40.4 kg / h, and thus the liquid bromine is metered into...

Embodiment 3

[0105] In this example use figure 2 The liquid bromine metering device is shown, and includes a Teflon membrane inside as an interface separation accessory.

[0106] Cylindrical liquid bromine metering tanks 1B and 1C are made of Hastelloy (C-276), and the tank body is divided into upper and lower parts. , The PTFE barrel-shaped film that moves freely up and down to the top and bottom of the tank in 1C is used as an interface separation accessory. The volume of liquid bromine metering tank 1B, 1C is 5m 3 , with an aspect ratio of 2. The metering pumps 7B and 7C are plunger pumps with a nominal accuracy of ±1%. A flow meter (not shown) is provided between the valves 15B, 15C and the bromine demand device 5 to measure the liquid bromine flow and its fluctuation on-line.

[0107] Liquid bromine is injected in the liquid bromine metering tank 1B, 1C with the flow rate of 250kg liquid bromine / hour. When liquid bromine reaches 90% by volume of liquid bromine metering tank 1B, ...

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Abstract

The invention relates to a liquid bromine metering device comprising one or more liquid bromine metering tanks and one or more metering pumps which are arranged at the upstream parts of water inlet valves and are used for metering water added into the liquid bromine metering tanks, wherein each liquid bromine metering tank comprises a water inlet and a valve connected with the water inlet at the top of the liquid bromine metering tank, a wastewater outlet and a valve connected with the wastewater outlet at the top of the liquid bromine metering tank, a liquid bromine inlet and a valve connected with the liquid bromine inlet at the bottom of the liquid bromine metering tank, and a liquid bromine outlet as well as a valve and a bromine supply device which are connected with the liquid bromine outlet in sequence at the bottom of the liquid bromine metering tank; the liquid bromine metering tanks and the metering pumps are connected in parallel. The liquid bromine metering device can be used for highly accurately and stably metering liquid bromine for a long term in a continuous or discontinuous manner, and is low in manufacturing and running costs.

Description

technical field [0001] The invention relates to a liquid bromine metering device. Background technique [0002] At present, the metering of liquid bromine during the bromination of butyl rubber is mainly directly metered by metering pumps. Due to the strong corrosiveness of liquid bromine, there are high requirements for the material of the metering pump. For this reason, it is necessary to use a diaphragm pump made of a material resistant to liquid bromine corrosion, which leads to high costs. At the same time, because there is no quantitative index for the corrosion of liquid bromine on the material of the metering pump, the reliability of the metering pump cannot be effectively guaranteed. Once liquid bromine leaks, the consequences will be very serious. In addition, the measurement accuracy of the metering pump actually used is not high, and the measurement error is as high as more than 15%, which seriously affects the control level of the bromination unit and the qua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B67C3/28
Inventor 钟林郑国军徐宏德刘铭包巧云
Owner CHINA PETROLEUM & CHEM CORP
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