Automatic purging device for dry quenching VOC (volatile organic compound) pipeline flame arrester

Abstract

An automatic purging device for a dry quenching VOC (volatile organic compound) pipeline flame arrester comprises a detachable pipeline flame arrester and an adjustable automatic purging device, the detachable pipeline flame arrester is a drum-shaped flange taper pipe with an annular supporting guide groove in the middle and a rectangular access hole, and a detachable circular grating flame-retardant filter screen with a handle is arranged in the annular supporting guide groove of the detachable pipeline flame arrester. The adjustable automatic blowing device is composed of an arc-shaped blowing pipe, an impact type atomizing nozzle, an electric adjusting valve assembly and the like. The diameter of the circular-arc-shaped purging pipe is slightly smaller than that of the detachable circular grating fire-retardant filter screen with the handle, the impact type atomizing nozzles are uniformly distributed on the circular-arc-shaped purging pipe, and the direction of the nozzles faces the bottom of the circular grating fire-retardant filter screen; parameters such as steam purging pressure and flow are remotely controlled by adjusting the opening degree of the electric valve, and a circular grating fire-retardant filter screen of the dry quenching VOC pipeline fire arrester is automatically purged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to environmental protection technical field, it is a kind of dry quenching VOC pipeline fire arrester fire-retardant filter screen online automatic purging device. BACKGROUND

[0002] Coking plant gas purification engineering needs to treat high oxygen tail gas to reach environmental protection discharge standard.High oxygen tail gas treatment system needs to collect and summarize high oxygen VOCs tail gas from regenerative tail gas of desulfurization unit, super separation residue, ammonia evaporation residue tank, oil depot loading area, then passes through two-stage washing tower, fire arrester, is summarized and is sent to dry quenching air introduction pipe of supporting coke oven, enters dry quenching furnace and is burnt, realizes coke oven environmental protection production.

[0003] To prevent VOCs treatment device from losing control, high-concentration combustible gas from leaking into combustion-supporting air, detachable pipeline fire arrester is arranged on the tail gas main pipeline of dry quenching, to facilitate cleaning and replacement.Industrial naphthalene crystals and other dirt are easily accumulated on the fire arrester filter screen, causing blockage, so the system needs to be stopped for replacement, and the fire arrester needs to be manually cleaned offline regularly.Periodic disassembly and offline cleaning of the fire arrester is an important technical problem.The existing technology has the following problems:1.the fire arrester filter screen needs to be disassembled and operated after the system is stopped for replacement, which seriously restricts the effect of VOCs tail gas treatment;2.it relies on manual operation to clean the fire arrester offline, which is labor-intensive, causes waste of manpower and resources, and easily causes secondary environmental pollution. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a dry quenching VOC pipeline fire arrester filter screen automatic purging device, which can perform online purging operation on the fire arrester filter screen without disassembling the pipeline fire arrester, overcomes the shortcomings of existing stoppage, manual offline purging and maintenance of the fire arrester, and avoids causing secondary environmental pollution.

[0005] The technical scheme of the utility model comprises:

[0006] The dry quenching VOC pipeline fire arrester automatic purging device comprises a detachable pipeline fire arrester and an adjustable automatic purging device.The detachable pipeline fire arrester is a drum-shaped flange cone pipe with an annular support guide groove in the middle and a rectangular access hole, and a handle-dismountable circular grid fire-retardant filter screen is arranged in the annular support guide groove.The adjustable automatic purging device comprises a circular-arc purging pipe and an impact atomizing nozzle and an electric regulating valve assembly.The diameter of the circular-arc purging pipe is slightly smaller than that of the handle-dismountable circular grid fire-retardant filter screen, the impact atomizing nozzles are uniformly distributed on the top of the circular-arc purging pipe, and the nozzles are directed towards the bottom of the circular grid fire-retardant filter screen.

[0007] The dry quenching VOC pipeline flame arrester is automatically purged by adjusting the electric valve opening degree to remotely control the purging pressure, flow and other parameters, and the circular grid flame arrester filter screen is automatically purged to melt the industrial naphthalene crystalline and other blocked dirt, so that the VOC tail gas is smoothly introduced into the dry quenching furnace and used to replace part of the introduced air, which does not affect the normal operation of the dry quenching device, and the VOC tail gas can be effectively treated, and the coke oven environmental protection production is realized.

[0008] The utility model discloses the beneficial effects: after using the device, the dry quenching VOC pipeline flame arrester can not stop machine and stop gas overhauls, and the rectangular maintenance hole on the flame arrester does not need to be disassembled, and the circular grid flame arrester filter screen with handle in the annular support guide groove is taken out to carry out manual offline purging. BRIEF DESCRIPTION OF DRAWINGS

[0009] Fig. 1 It is the front view for pipeline flame arrester automatic purging device.

[0010] Fig. 2 It is the plan view for circular grid flame arrester filter screen.

[0011] Fig. 3 It is the plan view for circular arc purging pipe and regulating valve assembly.

[0012] Fig. 4 It is the enlarged view of impact atomizing nozzle part.

[0013] In the drawing: 1. Flame arrester body, 2. Annular support groove, 3. Circular grid flame arrester filter screen, 4. Square maintenance hole, 5. Circular arc purging pipe, 6. Impact atomizing nozzle, 7. Electric regulating valve assembly, 8. Handle. DETAILED DESCRIPTION

[0014] The embodiment is further illustrated below in combination with the drawings.

[0015] Figs. 1-4The application discloses a dry quenching VOC pipeline flame arrester automatic purging device, which comprises a detachable pipeline flame arrester and an adjustable automatic purging device. The flame arrester body 1 is a drum-shaped flange conical pipe with an annular support guide groove 2 and a rectangular maintenance hole 4. The circular grid flame arrester filter screen 3 is installed in the flame arrester through the annular support guide groove 2. When maintenance is needed, the rectangular maintenance hole 4 is disassembled, the handle 8 is pulled out, and then manual purging is carried out. The adjustable automatic purging device comprises a circular arc purging pipe 5, an impact atomizing nozzle 6 and an electric regulating valve assembly 7. The diameter of the circular arc purging pipe 5 is slightly smaller than that of the circular grid flame arrester filter screen 3 with a handle, and the circular arc purging pipe 5 is directly welded on the conical pipe wall of the flame arrester body 1. The impact atomizing nozzle 6 is uniformly welded on the circular arc purging pipe 5, and the direction of the nozzle 6 is towards the bottom of the circular grid flame arrester filter screen 3. The steam purging pressure, flow and other parameters are remotely controlled by adjusting the opening of the electric valve 7, so that the circular grid flame arrester filter screen 3 of the dry quenching VOC pipeline flame arrester is automatically purged.

Claims

1. A dry quenching VOC pipeline flame arrester automatic purging device, characterized in that: It includes detachable pipeline flame arrester and adjustable automatic purging device; the detachable pipeline flame arrester is a drum-shaped flange conical pipe with annular support guide groove and rectangular inspection hole in the middle, and a detachable circular grid flame arrester filter screen with handle is arranged in the annular support guide groove; the adjustable automatic purging device includes circular arc purging pipe, impact atomizing nozzle and electric regulating valve assembly, the diameter of the circular arc purging pipe is slightly smaller than that of the detachable circular grid flame arrester filter screen with handle, the impact atomizing nozzles are uniformly distributed on the top of the circular arc purging pipe, and the direction of the nozzles is towards the bottom of the circular grid flame arrester filter screen.

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