CN-121975536-A - Unmanned on duty's high oxygen VOCs monitoring protection integration operation device

Abstract

The invention relates to the technical field of high-oxygen VOCs treatment, in particular to an unattended integrated operation device for monitoring and protecting high-oxygen VOCs, which comprises pressure monitoring equipment, a pressure regulating equipment, a control system, a fan, an analyzer and a cut-off valve, wherein the pressure monitoring equipment is arranged on each waste production container for generating high-oxygen VOCs waste gas, the pressure regulating equipment is also arranged on each waste production container, the control system is in signal connection with the pressure regulating equipment and the pressure monitoring equipment, the fan is connected with each waste production container through a pipeline, the analyzer is arranged on an outlet pipeline of the fan, the analyzer is connected with a first treatment channel for treating qualified waste gas which leads to a dry quenching furnace and a second treatment channel for treating unqualified waste gas which leads to a molecular sieve, the cut-off valve is arranged on the first treatment channel and the second treatment channel, and the cut-off valve and the analyzer are in signal connection with the control system.

Inventors

• ZHU JIANGANG
• LI MINGBO
• HOU XIAOLONG
• Liu sanhe

Assignees

• 新兴铸管股份有限公司

Dates

Publication Date

20260505

Application Date

20260407

Claims (10)

1. 1. Unmanned on duty's high oxygen VOCs monitoring protection integration operation device, a serial communication port, include: A pressure monitoring device for placement on each of the waste receptacles that produce high oxygen VOCs off-gas; A pressure regulating device also disposed on each of the waste containers; The control system is in signal connection with the pressure regulating equipment and the pressure monitoring equipment and is used for learning the pressure change in the waste production container and controlling the pressure regulating equipment to timely discharge waste gas; the fans are connected with the waste producing containers through pipelines so as to collect waste gas generated by the waste producing containers at the same time; The analyzer is arranged on an outlet pipeline of the fan and is used for monitoring whether various indexes in the waste gas reach standards, and the analyzer is connected with a first treatment channel for treating qualified waste gas and a second treatment channel for treating unqualified waste gas, wherein the first treatment channel is communicated with a dry quenching furnace, and the second treatment channel is communicated with a molecular sieve; And the cut-off valve is arranged on the first treatment channel and the second treatment channel so as to control the flow direction of the waste gas, the cut-off valve and the analyzer are both in signal connection with the control system, and the control system is used for controlling the on-off of the cut-off valve according to the analysis result of the analyzer.
2. 2. The unattended operation integrated operation device for monitoring and protecting the high-oxygen VOCs, according to claim 1, is characterized in that the pressure monitoring equipment is an intelligent pressure gauge, the pressure regulating equipment is a regulating valve, and the control system is a computer PC end.
3. 3. The unattended operation integrated device for monitoring and protecting the high-oxygen VOCs, as set forth in claim 2, is characterized in that the control system sets different pressure gears for different waste production containers, and the pressure value is bound with the opening of the corresponding regulating valve, so that the pressure is high to a certain gear, the valve is automatically opened, the pressure is low to a certain gear, the valve is automatically opened and is small, the automatic adaptation of the gas production is realized, and the unattended operation of front-end waste gas collection is realized.
4. 4. The unattended operation integrated device for monitoring and protecting the high-oxygen VOCs, according to any one of claims 1 to 3, is characterized in that the fan is a VOCs centrifugal fan, and a gas-liquid separator is further arranged on a pipeline connected with each waste container by the VOCs centrifugal fan so as to separate liquid in waste gas.
5. 5. The unattended operation integrated device for monitoring and protecting the high-oxygen VOCs, as set forth in any one of claims 1 to 3, is characterized in that the first treatment channel comprises a main channel and a plurality of sub-channels connected with the main channel, the main channel is provided with a VOCs fast-cutting main valve, each sub-channel is led to a dry quenching furnace, and each sub-channel is provided with a VOCs fast-cutting valve.
6. 6. The integrated operation device for monitoring and protecting unattended high-oxygen VOCs according to claim 5, wherein the second treatment channel is provided with an emergency release valve and the molecular sieve, the molecular sieve is provided with an emergency release port, and the emergency release valve, the VOCs fast-cutting total valve and the VOCs fast-cutting valve form the cut-off valve so as to realize unattended rear-end waste gas treatment.
7. 7. The unattended operation integrated device for monitoring and protecting the high-oxygen VOCs according to any one of claims 1 to 3, wherein a water seal device and a jacket heat preservation flame arrester are arranged at the outlet of the fan and the inlet of the dry quenching furnace, the water seal device is used for preventing tempering and explosion, and the jacket heat preservation flame arrester is used for preserving heat so as to avoid naphthalene in waste gas from cooling and crystallizing.
8. 8. The integrated operation device for monitoring and protecting unattended operation of high-oxygen VOCs according to claim 7, wherein a normally open steam pipe in winter is arranged at a position 50cm away from an inlet of each jacket heat preservation flame arrester, and heating is continued, so that naphthalene is further prevented from cooling and crystallizing, and unattended operation of naphthalene treatment is realized.
9. 9. The unattended operation integrated operation device for monitoring and protecting the high-oxygen VOCs according to any one of claims 1 to 3, wherein the safety index set by the analyzer on the exhaust gas is: the carbon monoxide is less than 10000ppm, the hydrogen sulfide is less than 10000ppm, the ammonia is less than 10000ppm, the methane is less than 10000ppm, the oxygen is less than 20%, the hydrogen is less than 20000ppm, and if any index exceeds the standard, the trigger control system controls the cut-off valve to be opened or closed.
10. 10. The integrated operation device for monitoring and protecting unattended operation of high-oxygen VOCs according to claim 9, wherein the reaction time for controlling the on-off of the cut-off valve by the control system is 0.3 seconds, so that unattended safety is ensured.

Description

Unmanned on duty's high oxygen VOCs monitoring protection integration operation device Technical Field The invention relates to the technical field of high-oxygen VOCs treatment, in particular to an unattended high-oxygen VOCs monitoring and protecting integrated operation device. Background The coking and chemical production of high-oxygen VOCs refers to the mixing of a high-content oxygen in a Volatile Organic Compound (VOCs) mixed system generated in each process link of coking and chemical production, and the system not only contains typical VOCs such as non-methane total hydrocarbons, but also contains toxic and harmful/combustible gases such as hydrogen sulfide, ammonia, hydrogen, carbon monoxide, and the like, and is typical composite waste gas in the coking industry. The industry typically employs front-end collection and end-treatment to treat VOCs off-gas. When the front end is collected, sealing is carried out by adopting a sealing cover, flexible connection and other modes, the unorganized dissipation of VOCs is reduced, independent collecting branch pipes are arranged for each waste production device, local negative pressure is formed by a draught fan, VOCs waste gas is sucked into a collecting main pipe and is collected and then sent to terminal treatment equipment, and the terminal treatment is carried out by adopting an adsorption method, a combustion method or a combined process. For example, patent document CN223144478U discloses a device for recovering the effluent of VOCs in a high oxygen system, which is characterized in that independent air-entraining channels are arranged on each waste production device of coking high oxygen VOCs, all channels are summarized to a VOCs recovery main pipe, the main pipe is arranged in an air inclined manner (the air-entraining end is high end, the treatment end is low end), and a matched fan is used for guiding the waste gas to be conveyed to a VOCs alkaline scrubber and a rear-end VOCs treatment device, a plurality of effluent pipelines are arranged at the bottom of the middle end of the VOCs recovery main pipe, condensate generated in the conveying process of the waste gas is specially collected, the effluent pipelines are summarized to a effluent storage tank, and the device can avoid the problems of production expansion and pipeline blockage caused by the accumulation of waste liquid in pipelines/equipment and ensure the smoothness of the collection and conveying of the waste gas of the high oxygen VOCs. However, in actual operation, the device has certain defects that 1) the device only sets a simple independent air-entraining channel for each waste producing device and gathers the waste gas into a main pipe, the collection amount of waste gas of each waste producing node is not accurately regulated, when the waste gas yield of each device is dynamically changed, the waste gas overflow or excessive negative pressure suction of excessive air is easily caused by insufficient collection, and the high oxygen characteristic of the waste gas is aggravated, 2) the waste gas guide, condensate collection and transportation of the device are realized only by virtue of basic equipment such as a fan, a conveying pump and the like, and lack of monitoring and protecting means, the operation state of each link needs manual inspection and manual control, personnel must be arranged on duty and on duty to ensure the operation, and 3) naphthalene component is contained in the waste gas of the coking high oxygen VOCs, and low-temperature easy crystallization blocking equipment in winter affects the smoothness of waste gas transportation and liquid recovery. Disclosure of Invention The invention provides an unattended integrated operation device for monitoring and protecting high-oxygen VOCs, which aims to solve the technical problem that the prior art lacks an intelligent monitoring and protecting means when the high-oxygen VOCs are treated and needs personnel to be on duty in the whole process. In order to solve the problems, the unattended integrated operation device for monitoring and protecting the high-oxygen VOCs provided by the invention adopts the following technical scheme: unmanned on duty's high oxygen VOCs monitoring protection integration operation device includes: A pressure monitoring device for placement on each of the waste receptacles that produce high oxygen VOCs off-gas; A pressure regulating device also disposed on each of the waste containers; The control system is in signal connection with the pressure regulating equipment and the pressure monitoring equipment and is used for learning the pressure change in the waste production container and controlling the pressure regulating equipment to timely discharge waste gas; the fans are connected with the waste producing containers through pipelines so as to collect waste gas generated by the waste producing containers at the same time; The analyzer is arranged on an outlet pipeline of the fan and is u