Analyzing and detecting device suitable for organic amine in tail gas desulfurization process

Abstract

The utility model relates to an organic amine analysis detection device suitable for a tail gas desulfurization process. The problem that a test bench for reliably testing the organic amine analysis process performance does not exist in an existing detection method is solved. Comprising a desorption device, an organic amine sample, a heater, a desorption solution thermometer, a gas pipe, a desorption tail gas treatment device, an acid gas absorption alkali liquor, a device seal and a thermal insulation material, the desorption device contains the organic amine sample after absorbing the acid gas, the desorption device is connected with the desorption tail gas treatment device through the gas pipe, and the desorption solution thermometer is arranged on the desorption device. The desorption device is wrapped with a thermal insulation material, the desorption tail gas treatment device contains sufficient acid gas absorption alkali liquor, a heater is arranged below the desorption device, and device seals are arranged on the desorption device and the desorption tail gas treatment device. The device has the advantages that materials are easy to obtain, the assembly is simple, the manufacturing cost is low, and the device can be well adapted to the existing amine liquid detection method.

Description

Technical Field

[0001] The utility model relates to a detection device, in particular to an analytical detection device for organic amines in a tail gas desulfurization process. Background Art

[0002] The detection technology of organic amines in tail gas desulfurization process is applied in the fields of petrochemical, metallurgy and sulfuric acid industry technology.

[0003] Organic amine tail gas desulfurization process is applied to the acid gas (CO 2 , H 2 S, etc., and SO in tail gas from metallurgy and sulfuric acid industries 2 Enrichment and reuse process. The organic amine tail gas desulfurization process uses the characteristics of organic amines to adsorb acidic gases at low temperatures and decompose acidic gases at high temperatures to separate acidic gases from tail gas. In the application of the organic amine tail gas desulfurization process, organic amines that remove acidic gases from tail gas by cyclic heating and cooling absorption are prone to generate impurities such as sulfate, thiosulfate and carbonate due to side reactions, and may degrade organic amines due to heating or impurities in the tail gas, resulting in organic amine loss and reduced enrichment efficiency. Therefore, in the design process, it is necessary to study the amine solution decomposition temperature and decomposition steam parameters, and determine the optimal decomposition conditions based on characteristic parameters such as residual ion concentration, sulfate generation, sulfite generation, chromaticity, and foaming rate in the amine solution after decomposition.

[0004] Among the current detection methods, there is no reliable test bench for testing the performance of organic amine analytical processes. Utility Model Content

[0005] The purpose of the utility model is to provide an organic amine analysis detection device suitable for tail gas desulfurization process. The device detects the organic amine analysis process to obtain the optimal heating temperature, reaction end time and characteristic parameters of the amine solution after the reaction.

[0006] The utility model is realized by the following technical solutions:

[0007] A decomposition and detection device for organic amines in a tail gas desulfurization process comprises a decomposition device, an organic amine sample, a heater, a decomposition liquid thermometer, an air pipe, a decomposition tail gas treatment device, an acidic gas absorbing alkali solution, a device seal and a heat-insulating material. The decomposition device contains the organic amine sample after absorbing the acidic gas. The decomposition device is connected to the decomposition tail gas treatment device through the air pipe. A decomposition liquid thermometer is arranged on the decomposition device. The decomposition device is wrapped with heat-insulating material. A sufficient amount of acidic gas absorbing alkali solution is contained in the decomposition tail gas treatment device. A heater is arranged under the decomposition device. A device seal is arranged between the decomposition device and the decomposition tail gas treatment device.

[0008] The heater is a constant temperature heater.

[0009] The utility model provides a test device for optimizing the process parameters of organic amine analysis, which has the advantages of easy material acquisition, simple assembly and low cost, and can be well adapted to the existing amine solution detection method. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the utility model. DETAILED DESCRIPTION

[0011] like Figure 1 As shown, the utility model is a analytical detection device suitable for organic amines in tail gas desulfurization process, including an analytical device 1, an organic amine sample 2, a constant temperature heater 3, an analytical liquid thermometer 4, an air pipe 5, an analytical tail gas treatment device 6, an acid gas absorption alkali solution 7, a device seal 8 and a thermal insulation material 9.

[0012] The analysis device 1 contains an organic amine sample 2 after absorbing acidic gas. The analysis device is connected to the analysis tail gas treatment device 6 through an air pipe 5. A analysis liquid thermometer 4 is arranged on the analysis device 1 to detect the temperature of the analysis liquid. The analysis device 1 is wrapped with a heat-insulating material 9 to increase the heating speed and the heat-insulating effect. The analysis tail gas treatment device 6 contains a sufficient amount of acidic gas absorption alkali solution 7. A constant temperature heater 3 is arranged under the analysis device 1 to realize constant temperature heating of the analysis device 1. Device seals 8 are arranged on the analysis device 1 and the analysis tail gas treatment device 6 to ensure that the gas does not leak.

[0013] The main operating steps of the analytical detection device include:

[0014] Step S0: Assembling the organic amine analysis and detection device 1.

[0015] Step S1: placing the organic amine sample 2 after absorbing the acidic gas in the analytical detection device 1 .

[0016] Step S2: Design the analysis temperature range and different heating time points for each temperature point. For example, if the analysis temperature range provided by the organic amine supplier is 100-120°C, then the analysis temperature points are designed to be 100°C, 105°C, 110°C, 115°C, and 120°C, and the sampling is designed at the time of reaching each temperature point 0min, 1min, 2min...

[0017] Step S3: The sample in the analysis device 1 is heated and analyzed by the constant temperature heater 3. In the different temperature intervals designed in S2, samples are taken at each heating time point to test characteristic parameters such as ion concentration (NH+, Na+, K+, Fe3+, Fe2+, Cl-, F-...), pH, foaming rate, moisture, color, etc.

[0018] Step S4: harmless treatment of alkali solution and organic amine absorbent.

[0019] The utility model has the advantages that in the tail gas desulfurization process design stage, the device can be used to more accurately obtain the optimal process parameters for organic amine analysis, and provide design reference values ​​such as heating steam flow and steam parameters for the tail gas desulfurization process design, which can avoid the increase of side reactions and organic amine sulfur precipitation caused by insufficient analysis.

[0020] According to the test results, in the actual application stage of the tail gas desulfurization process, the degree of analytical reaction can be quickly determined by comparing the test results of the bench test with the test results of the organic amine sampling, which can greatly improve the accuracy and convenience of adjusting the process parameters of the process.

Claims

1. A analytical detection device for organic amines in tail gas desulfurization process, characterized by: The invention comprises an analysis device, an organic amine sample, a heater, an analysis liquid thermometer, an air pipe, an analysis tail gas treatment device, an acid gas absorption alkali solution, a device seal and a heat-insulating material. The analysis device contains the organic amine sample after absorbing the acid gas. The analysis device is connected with the analysis tail gas treatment device through the air pipe. An analysis liquid thermometer is arranged on the analysis device. The analysis device is wrapped with heat-insulating material. The analysis tail gas treatment device contains a sufficient amount of acid gas absorption alkali solution. A heater is arranged under the analysis device. A device seal is arranged between the analysis device and the analysis tail gas treatment device.

2. The analytical detection device for organic amines in tail gas desulfurization process according to claim 1 is characterized in that: The heater is a constant temperature heater.

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