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A coke oven gas ammonia online analysis pretreatment system and its application method
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A coke oven gas and pretreatment technology, applied in the preparation of test samples, etc., can solve the problems of corrosion analysis instruments, faults, gas pipeline blockage, etc., and achieve the effects of short analysis lag time, compact layout, and small content error
Active Publication Date: 2021-06-15
HUNAN CHAIRMAN IND INTELLIGENT SYST CO LTD
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[0004] At present, there are few application examples of the online analysis system for ammonia in coke oven gas. Due to the characteristics of high dust, water, oil, and acid in the gas, it is easy to cause gas pipeline blockage, corrosion, or failure of analysis instruments. It is necessary to develop an efficient purification system. The gas pretreatment system that does not affect the content of the components to be measured purifies the gas entering the online analysis instrument
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[0054] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention.
[0055] Such as figure 1 and 2As shown, the present invention provides a coke oven gas ammonia online analysis pretreatment system, including: a sampling probe 2, which is arranged in the gas pipeline 1, communicates with the sampler 4 through the pipeline, and is used to drain the gas in the gas pipeline 1. The coal gas sample is sent to the sampler 4; at the same time, the sampling probe 2 is provided with a coarse fil...
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Abstract
The invention provides an on-line analysis and pretreatment system for coke oven gas and ammonia gas, comprising a sampling probe (2), a flange (3), a sampler (4), a first solenoid valve (6), a second solenoid valve (7 ), third solenoid valve (8), gas-water separator (9), fourth solenoid valve (10), scrubber (11), first three-way connector (12), dryer (13), desulfurization tank (14), air pump (15), first three-way valve (16), precision filter (18), second three-way connector (19), gas flow meter (20), ammonia gas analyzer (21), First exhaust port (22), second exhaust port (23), distributed controller (24), backup dryer (25), controller (26), gas pipeline (27), signal transmission line (28 ), the second three-way valve (29) and the third three-way valve (30). The invention can effectively reduce the content of impurities and dust in the gas sampled and analyzed, and ensure the long-term stable operation of the ammonia online analyzer.
Description
technical field [0001] The invention belongs to the technical field of material component analysis in coke oven gas, and in particular relates to an online analysis and pretreatment system for ammonia in coke oven gas and a method for using the same. Background technique [0002] The coke oven gas produced by the coking plant contains a small amount of ammonia gas. The ammonia gas will cause environmental pollution when it is discharged with the gas combustion products, and it needs to be recycled. In order to achieve the maximum recovery of ammonia, it is necessary to feedback and optimize the operating parameters of this section according to the ammonia content in the outlet gas of the recovery section. At present, manual analysis of the ammonia content in the outlet gas is commonly used, but the sampling and analysis interval of this method is long, and only the data of the ammonia content in the gas at the sampling moment can be obtained, and the real-time ammonia conten...
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