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Calorimetry testing method and device for tubular reaction

A technology of tube reaction and test method, applied in the direction of measuring device, calorimeter, measuring heat, etc.

Pending Publication Date: 2019-03-12
SHENYANG RES INST OF CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, based on the constant temperature mode, there are no relevant reports on gas-gas, gas-liquid, gas-solid, liquid-liquid, and liquid-solid tubular reaction calorimetry

Method used

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  • Calorimetry testing method and device for tubular reaction
  • Calorimetry testing method and device for tubular reaction
  • Calorimetry testing method and device for tubular reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] like figure 1 As shown, the device comprises a first feeding system, a second feeding system, a reactor 25, a sampler 26, a material collector 27 and a gas-liquid separator 30, wherein the first feeding system passes through a first input pipeline 34 and reacts The input end of the reactor 25 is connected, the second feeding system is connected with the input end of the reactor 25 through the second input pipeline 37, and the output end of the reactor 25, the sampler 26, the material collector 27 and the gas-liquid separator 30 are connected in series successively, the described The first feeding system includes a raw material liquefaction bottle, a feeding pipeline and a purge gas pipeline 35, the raw material liquefaction bottle is connected to the feeding pipeline one by one, each feeding pipeline and the purge gas pipeline 35 are arranged in parallel and The output ends are all connected to the first input pipeline 34, and ball valves and mass flow meters are sequen...

Embodiment 2

[0085] In this example, acetic anhydride is hydrolyzed to generate acetic acid as an example to illustrate the calorimetric test method of the present invention, and at the same time verify it with data recorded in literature. The feed molar ratio of acetic anhydride and water is 1:22.69, and the reaction temperature T r The temperature is 50°C, the material residence time is 20-30s, and the reaction pressure is 0.1 MPa.

[0086] experiment procedure:

[0087] 1) Air tightness test of the reaction system. Feed nitrogen into the reaction system through the gas replacement port, and control the nitrogen pressure through the decompression gauge. When the nitrogen gas reaches 3.0MPa, stop the nitrogen gas flow and start maintaining the pressure. If within 1 hour, the pressure drop of the reactor system is less than 0.01bar / min, it can be considered that the airtightness of the reaction system is good, and the pressure holding is over.

[0088] 2) Pressure relief. Open the sol...

Embodiment 3

[0103] Present embodiment is with 40% methanol aqueous solution on solid catalyst (catalyst main component is CuO, ZnO, Al 2 o 3 、Na 2 O) take place under the catalysis to generate hydrogen and carbon dioxide as an example, the calorimetric test method of the present invention is described, and further verified by bond energy calculation. The 40% methanol aqueous solution enters at a flow rate of 0.0011g / s, the temperature of the 40% methanol aqueous solution before entering the reactor is 25°C, the reaction temperature is set at 250°C, the residence time of the material is 20-30s, and the reaction pressure is 1.5Mpa.

[0104] experiment procedure:

[0105] 1) Air tightness test of the reaction system. Feed nitrogen into the reaction system through the gas replacement port, and control the nitrogen pressure through the decompression gauge. When the nitrogen gas reaches 3.0MPa, stop the nitrogen gas flow and start maintaining the pressure. If within 1 hour, the pressure drop...

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Abstract

The invention relates to obtaining of reaction heat during a tubular reaction, in particular to a testing method and device for obtaining calorimetry of a gas-gas, gas-liquid, gas-solid, liquid-liquidand liquid-solid solid-phase tubular reaction through a constant-temperature heat flow mode. According to the device, through the constant-temperature heat flow mode, calorimetry testing of the gas-gas, gas-liquid, gas-solid, liquid-liquid and liquid-solid solid-phase tubular reaction is conducted, and real-time on-line measurement and data analysis can be accurately implemented. The device comprises a reactor system, a temperature control system, a pressure control system, a gas replacement system, a gas feeding control system, a liquid feeding control system, a calibration system, a sampling system, a material collecting system, a gas-liquid separating system, a central control system and a data processing system, so that calorimetry testing of the heat release and heat absorbing tubular reaction is realized.

Description

technical field [0001] The invention relates to the acquisition of reaction heat in the process of tubular reaction, specifically a tubular reaction gas-gas, gas-liquid, gas-solid, liquid-liquid, liquid-solid phase tubular reaction obtained through constant temperature heat flow mode Calorimetric testing method and device. Background technique [0002] Chemical production involves chemical reactions, and most chemical reactions are exothermic, with risks such as overtemperature and overpressure, and are prone to accidents such as fire and explosion. Therefore, it is particularly important to measure the potential thermal risks in the process of chemical reactions. Chemical reaction heat The acquisition is inseparable from calorimetric equipment. At present, the existing calorimeters on the market mainly include reaction calorimeter (RC1 / Simular), accelerating calorimeter (ARC), differential scanning calorimeter (DSC) and so on. [0003] Existing calorimetric equipment such...

Claims

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Application Information

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IPC IPC(8): G01K17/00
CPCG01K17/00
Inventor 程春生李全国刘玄魏振云马晓华吕国锋李子亮
Owner SHENYANG RES INST OF CHEM IND
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