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An activated carbon bed safety protection system

An activated carbon bed and safety protection technology, applied in the field of safety protection systems, can solve problems such as fire, temperature out of control, etc., to achieve cooling and fire extinguishing, and to ensure safety

Active Publication Date: 2019-01-25
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an activated carbon bed safety protection system to solve the problem that the activated carbon bed is easy to cause temperature out of control and cause fire in the process of adsorption or desorption in the process of chemical industry and environmental protection.

Method used

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  • An activated carbon bed safety protection system

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Experimental program
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Embodiment 1

[0017] Embodiment 1: as figure 1 As shown, the present invention comprises activated carbon bed 5, bypass system and temperature measuring instrument 6, and described bypass system is connected in parallel with activated carbon bed 5, and the gas inlet of activated carbon bed 5 side is connected first valve 1 by pipeline, and the gas inlet of the other side The gas outlet is connected to the fourth valve 4 through a pipeline, and the bypass system is composed of a heat exchanger 8, a second valve 2 and a third valve 3;

[0018] When the activated carbon bed 5 is at normal working temperature, the second valve 2 and the third valve 3 remain closed, the first valve 1 and the fourth valve 4 remain open, and the gas is discharged after being adsorbed by the activated carbon bed; with the adsorption of high-concentration gas , the temperature of the activated carbon bed increases gradually. When the measured temperature of the temperature measuring instrument 6 is higher than the s...

Embodiment 2

[0020] Example of gas adsorption device containing cyclohexanone

[0021] A certain factory adopts activated carbon to adsorb the gas containing cyclohexanone, and the overheating often occurs, and the spray method is used to cool down, and it takes a long time to recover the adsorption. Gas volume is 15000m 3 / h, the safety device is to install 4 thermometers on the activated carbon bed, set the warning temperature to 90°C, and the circulating ventilation volume to 8000m 3 / h, the area of ​​heat exchanger 8 is 180m 2 . When smoldering occurs, one of the temperature measuring instruments 6 will give an alarm at 90°C, start the system, close the first valve 1 and the fourth valve 4 of the activated carbon bed 5, open the heat exchange circulation system, and the temperature will rise to 102°C at the highest , and then dropped rapidly, about 30 minutes later, the temperature dropped to 50°C, closed the bypass heat exchange system, opened the first valve 1 and the fourth valve...

Embodiment 3

[0023] Adopt the device described in embodiment 1, hot air blows off desorption device example

[0024] A factory uses hot air to blow off and desorb the activated carbon bed. The amount of activated carbon loaded on the activated carbon bed 5 is 2t, and the exhaust volume is 15000m 3 / h, the safety device is to install 4 thermometers on the activated carbon bed 5, set the warning temperature to 130°C, and the circulating ventilation volume to 8000m 3 / h, the area of ​​heat exchanger 5 is 180m 2 . During the desorption process at 120°C, the temperature gradually rises, and one of the temperature measuring instruments 6 sends out an alarm at 130°C, starts the system, closes the first valve 1 and the fourth valve 4 of the activated carbon bed 5, and starts the heat exchange cycle system , the temperature rises to 150°C at the highest, and then drops rapidly. After about 30 minutes, the temperature drops to 110°C. Close the bypass heat exchange system, open the first valve 1 an...

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Abstract

The present invention relates to an active carbon safety protection system. According to the system, the bypass system is connected in the front and on the rear of the pipelines of the active carbon bed, the active carbon bed area is provided with the temperature gauge, the second valve and the third valve are closed and the first valve and the fourth valve are opened when the temperature is at the normal working temperature, and gas is adsorbed by the active carbon bed and then is discharged; when temperature runaway, fire disaster generation and other conditions occur in the active carbon layer, the temperature measured by the temperature gauge is higher than the set temperature, the second valve and the third valve are opened and the first valve and the fourth valve are closed, the high-temperature gas circulates in the bypass closed loop system under the assisted force of the fan, the heat exchanger arranged in the bypass system cools the high-temperature gas circularly discharged by the active carbon bed through the cooling water and finally achieves the cooling on the bed layer, and when the bed layer temperature decreases to less than or equal to the safe temperature, the first valve and the fourth valve can be opened and the second valve and the third valve can be closed so as to normally work. With the system of the present invention, the fire disaster generation safety problem of the active carbon bed can be effectively controlled, the damage effect on the bed layer is low, the equipment is simple, and the automated management can be achieved.

Description

technical field [0001] The invention relates to the technical field of safety protection of activated carbon beds in chemical engineering, environmental protection and other technological processes, in particular to a safety protection system for high-temperature fires of activated carbon beds. Background technique [0002] Activated carbon bed adsorption is widely used in chemical industry, environmental protection and other processes. Since carbon itself is a poor thermal conductor, it is prone to heat accumulation. The activated carbon bed adsorbs high-concentration gases or ketones and other gases, or adsorbs a certain amount of organic matter. When restarting after being idle, abnormal situations such as carbon layer flyover and fire are prone to occur; at the same time, it is not uncommon for the temperature of the adsorption bed to be out of control during the thermal desorption process and cause fires and combustion accidents. [0003] From a safety point of view, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/02
Inventor 羌宁李照海刘涛荀志萌吴娅
Owner TONGJI UNIV