CN219502398U

CN219502398U - Rare earth plant chlorine tail gas absorption tower outage is from opening device

Info

Publication number: CN219502398U
Application number: CN202320716128.2U
Authority: CN
Inventors: 朱利华; 徐浩然; 赵彦玲; 贾凯鑫
Original assignee: Inner Mongolia Aerospace Jinxia Chemical Co ltd
Current assignee: Inner Mongolia Aerospace Jinxia Chemical Co ltd
Priority date: 2023-04-04
Filing date: 2023-04-04
Publication date: 2023-08-11
Anticipated expiration: 2033-04-04

Abstract

The utility model discloses a power-off self-starting device of a chlorine tail gas absorption tower of a rare earth plant, which belongs to the field of rare earth and comprises a reaction system, a tail gas absorption system, an alarm system and an electric control system, wherein a glass fiber reinforced plastic reaction tank is arranged in the reaction system, a chlorine gas detection probe is arranged beside the top of the glass fiber reinforced plastic reaction tank, an opening at the top of the glass fiber reinforced plastic reaction tank is connected with an exhaust pipe, the tail gas absorption tower is arranged in the tail gas absorption system, the top of the absorption tower is connected with an exhaust pipe, a discharge port of a liquid alkali pump is connected to the top of the tail gas absorption tower, the bottom of the tail gas absorption tower is connected to the top of a liquid alkali tank, the alarm system comprises a linkage alarm, the chlorine gas detection probe is connected with the linkage alarm, and a generator, a general control room UPS power supply and a general control cabinet are arranged in the electric control system. The chlorine tail gas generated by the reaction tank is purified and absorbed by the alkali liquor spray tower and then discharged up to the standard, thereby ensuring the personal safety of factories and surrounding masses and meeting the requirements of safety and environmental protection.

Description

Rare earth plant chlorine tail gas absorption tower outage is from opening device

Technical Field

The utility model relates to the field of rare earth, in particular to a power-off self-starting device of a chlorine tail gas absorption tower of a rare earth plant.

Background

Use and function of rare earth: rare earth is known as industrial vitamin, has excellent magnetic, optical and electrical properties which cannot be replaced, and plays a great role in improving product properties, increasing product varieties and improving production efficiency. Because the rare earth has large effect and small dosage, the rare earth becomes an important element for improving the structure of products, improving the technological content and promoting the technical progress of industries, and is widely applied to the fields of metallurgy, military, petrochemical industry, glass ceramic, agriculture, new materials and the like.

The mixed rare earth concentrate containing lanthanum, cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, yttrium, lutetium, ytterbium and yttrium is subjected to direct acid dissolution to extract high-valence elements, chlorine is generated due to uneven local temperature control, the leaked chlorine can irritate the skin or respiratory tract mucous membrane of a patient, the human health is bad, absorption treatment is needed, chlorine monitoring, alarming and liquid alkali spraying automatic absorption devices are often adopted for solving, but a power failure and power failure event can suddenly occur in the production process, a power failure notification is not received in a production workshop before, the materials in a reaction tank continue to react after the power failure, and the chlorine is generated to escape due to the fact that the automatic absorption devices cannot normally run due to the power failure, so that the chlorine leakage event occurs, and the safety is influenced.

Disclosure of Invention

For the existing problems, the utility model aims to provide a power-off self-starting device of a chlorine tail gas absorption tower of a rare earth plant, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a chlorine tail gas absorption tower outage self-starting device of rare earth factory, includes reaction system, tail gas absorption system, warning system, automatically controlled system, reaction system in be equipped with the glass steel retort, install chlorine test probe apart from glass steel retort top side, glass steel retort top opening links to each other with the exhaust pipe, install the tail gas absorption tower in the tail gas absorption system, the exhaust pipe links to each other with the draught fan entry, the draught fan export is connected with tail gas absorption tower bottom, tail gas absorption tower top is connected with the blast pipe, the blast pipe links to each other with the air inlet of air-blower, the air-blower export links to each other with the outlet duct, liquid alkali pump feed inlet is connected to liquid alkali pond, liquid alkali pump feed outlet is connected to tail gas absorption tower top, tail gas absorption tower bottom is connected to liquid alkali pond top, warning system includes the chain alarm, chlorine test probe links to each other with the chain alarm, be equipped with the generator in the automatically controlled system, always accuse room UPS power and always accuse cabinet.

As still further aspects of the utility model: and the generator in the generator room is connected with the master control cabinet.

As still further aspects of the utility model: and the UPS power supply of the master control room is connected with the master control cabinet.

As still further aspects of the utility model: the master control cabinet is connected with the interlocking alarm, the induced draft fan, the blower and the liquid alkali pump.

Compared with the prior art; the beneficial effects of the utility model are as follows: an exhaust fan is arranged in the factory building; and chlorine gas detection probe equipment is arranged at 8 positions, and the chlorine gas detection probe interlocking alarm and exhaust systems are uniformly distributed around each reaction tank. In normal production, the tail gas recovery system is provided with a UPS power supply and a generator standby power supply, is interlocked with the automatic absorption device, and can be started when the power grid of the tail gas absorption tower is powered off, so that the normal operation of the tail gas absorption tower is maintained, and the chlorine tail gas generated by the reaction tank is purified and absorbed by the alkali liquor spray tower and then discharged after reaching standards, thereby ensuring the personal safety of factories and surrounding masses and meeting the requirements of safety and environmental protection.

Drawings

Fig. 1 is a schematic structural diagram of a power-off self-starting device of a chlorine tail gas absorption tower of a rare earth plant.

In the figure: 1. a glass fiber reinforced plastic reaction tank; 2. a chlorine gas detection probe; 3. an exhaust pipe; 4. a draught fan 4; 5. a tail gas absorption tower; 6. an exhaust pipe; 7. a blower; 8. an air outlet pipe; 9. a liquid alkali pump; 10. a liquid alkali pool; 11. a chain alarm; 12. a generator; 13. a master control room UPS power supply; 14. and a master control cabinet.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "provided," "connected," and "connected" are to be construed broadly; for example, the connection may be fixed connection, detachable connection, or integral connection, mechanical connection, electrical connection, direct connection, indirect connection via an intermediate medium, or communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1, a power-off self-starting device of a chlorine tail gas absorption tower of a rare earth plant comprises a reaction system, a tail gas absorption system, an alarm system and an electric control system, wherein a glass fiber reinforced plastic reaction tank 1 is arranged in the reaction system, a chlorine gas detection probe 2 is arranged beside a manual operation port which is 20cm higher than the top of the glass fiber reinforced plastic reaction tank 1, and an opening at the top of the glass fiber reinforced plastic reaction tank 1 is connected with a phi 200 glass fiber reinforced plastic exhaust pipe 3.

The tail gas absorption system is internally provided with a tail gas absorption tower 5, an exhaust pipe 3 is connected with an inlet of an induced draft fan 4, an outlet of the induced draft fan 4 is connected with an opening at a position 30cm away from a base of the bottom of the tail gas absorption tower 5, the top of the tail gas absorption tower 5 made of polypropylene is connected with an exhaust pipe 6 made of phi 200 polypropylene, the exhaust pipe 6 is connected with an air inlet of a blower 7, an outlet of the blower 7 is connected with an air outlet pipe 8 made of phi 200 polypropylene, a feed inlet DN50 polypropylene pipe of a liquid caustic pump 9 is connected to 0.5m under liquid of a liquid caustic pool 10, a discharge outlet DN40 polypropylene pipe of the liquid caustic pump 9 is connected to the top of the tail gas absorption tower 5, and the bottom of the tail gas absorption tower 5 is connected to the top of the liquid caustic pool 10 with a phi 150 polypropylene pipe.

The alarm system comprises a linkage alarm 11, the chlorine detection probe 2 is connected with the linkage alarm 11, and the linkage alarm 11 is connected with a master control cabinet 14.

The electric control system is internally provided with a generator 12, a master control room UPS power supply 13 and a master control cabinet 14, the generator 12 in the generator room is connected with the master control cabinet 14, the master control room UPS power supply 13 is connected with the master control cabinet 14, the master control cabinet 14 is connected with a linkage alarm 11, an induced draft fan 4, a blower 7 and a liquid alkali pump 9, and manual starting switches are arranged on site.

Description of the overall working principle:

reaction system I: the reaction still goes on after the glass steel retort 1 has suddenly had a power failure, if tail gas absorption system is not started because of having a power failure, the chlorine that the reaction produced can escape from manual operation mouth, and operating personnel can contact chlorine at first and is also dangerous, and with chlorine test probe 2 setting in this place and the distance from the operation mouth be less than the contact distance that people breathed, furthest protection personal safety.

Tail gas absorption system II

Absorption treatment of tail gas containing chlorine: the chlorine-containing tail gas collected at the exhaust pipe 3 is sent to the bottom of the tail gas absorption tower 5 by means of negative pressure formed by the induced draft fan 4, the chlorine-containing tail gas ascends from the bottom of the tail gas absorption tower 5 under positive pressure formed by the induced draft fan 4 and negative pressure formed by the air blower 7, contacts with liquid alkali sprayed at each level of partition boards in the tail gas absorption tower 5, becomes harmless gas after being sprayed and absorbed by the liquid alkali, and enters the air blower 7 through the exhaust pipe 6, and the harmless gas in the exhaust pipe 6 is absorbed by the negative pressure formed by the air blower 7, so that the harmless gas is sent to the air outlet pipe 8 to enter the atmosphere after positive pressure is formed.

Spraying liquid alkali: the liquid alkali pool 10 is well provided with 6% -10% sodium hydroxide solution, the solution is pumped to the top of the tail gas absorption tower 5 through the liquid alkali pump 9, fine liquid drops are formed by each level of partition boards in the tail gas absorption tower 5 and fully contacted with chlorine-containing tail gas, the sodium hydroxide liquid drops and chlorine gas can quickly react and form sodium chloride and sodium hypochlorite mixed liquid through chemical reaction, the mixed liquid flows back to the liquid alkali pool 10 through the outlet at the bottom of the tail gas absorption tower 5, the mixed liquid is absorbed and enriched to a certain concentration and can be collected to be used as epidemic prevention and disinfection materials, and the liquid alkali pool 10 is re-provided with 6% -10% sodium hydroxide solution for use.

Alarm system III: once the concentration of the chlorine gas detection probe 2 is captured by the chain alarm 11 and reaches the set primary low alarm value AL, namely 100% OEL,1mg/m3 (equivalent to 0.3 ppm), the chain alarm 11 gives an alarm and feeds back to the main control cabinet 14, the tail gas absorbing device is started, and meanwhile, on-duty personnel are reminded of checking whether the equipment is abnormal or not, and if necessary, the tail gas absorbing device is started manually.

And (4) an electric control system IV: the power grid is cut off and the power is cut off when the power passes through a working room, the UPS power supply 13 of the master control room can maintain the normal operation of the master control cabinet 14, the generator 12 in the generator room is started in a chained mode, and after the generator 12 is started, the master control cabinet 14, the connection chained alarm 11, the induced draft fan 4, the blower 7, the liquid alkali pump 9 and the like can be guaranteed to operate normally.

The beneficial effects of the utility model are as follows: an exhaust fan is arranged in the factory building; and chlorine gas detection probe equipment is arranged at 8 positions, and the chlorine gas detection probe interlocking alarm and exhaust systems are uniformly distributed around each reaction tank. In normal production, the tail gas recovery system is provided with a UPS power supply and a generator standby power supply, is interlocked with the automatic absorption device, and can be started when the power grid of the tail gas absorption tower is powered off, so that the normal operation of the tail gas absorption tower is maintained, and the chlorine tail gas generated by the reaction tank is purified and absorbed by the alkali liquor spray tower and then discharged after reaching standards, thereby ensuring the personal safety of factories and surrounding masses and meeting the requirements of safety and environmental protection.

The working principle of the utility model is as follows: the utility model is that

It should be noted in particular; what is the application of the prior art in the present utility model; what is the innovation point of the utility model; which effectively solves the problem of what.

As would be apparent to one skilled in the art; it is obvious that the utility model is not limited to the details of the above-described exemplary embodiments; and without departing from the spirit or essential characteristics of the utility model; the utility model can be embodied in other specific forms. Thus, the method comprises the steps of; from either point of view; the embodiments should be considered as exemplary; and is non-limiting; the scope of the utility model is indicated by the appended claims rather than by the foregoing description; it is therefore intended to include within the utility model all changes that fall within the meaning and range of equivalency of the claims. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it is provided that; it should be understood that; although the present description describes embodiments; but not every embodiment contains only one independent technical solution; this manner of description is for clarity only; the skilled artisan should recognize the specification as a whole; the technical solutions in the embodiments may also be combined appropriately; forming other embodiments as will be appreciated by those skilled in the art.

Claims

1. The utility model provides a chlorine tail gas absorption tower outage self-starting device in rare earth factory, a serial communication port, including reaction system, tail gas absorption system, warning system, automatically controlled system, reaction system in be equipped with glass steel retort (1), the next chlorine test probe (2) of installation in distance glass steel retort (1) top, glass steel retort (1) open-top links to each other with exhaust pipe (3), install tail gas absorption tower (5) in the tail gas absorption system, exhaust pipe (3) link to each other with draught fan (4) entry, draught fan (4) export is connected with tail gas absorption tower (5) tower bottom, tail gas absorption tower (5) top is connected with blast pipe (6), blast pipe (6) links to each other with air inlet of air-blower (7), air-blower (7) export links to each other with outlet duct (8), liquid alkali pump (9) feed inlet is connected to liquid alkali pond (10), liquid alkali pump (9) discharge gate is connected to tail gas absorption tower (5) top, tail gas absorption tower (5) bottom is connected to liquid alkali pond (10) top, warning system includes interlock alarm (11), chlorine test probe (2) link to each other with draught fan (4) entry, power generator (12), total accuse system (14) is equipped with in the interlock alarm cabinet (13).

2. The rare earth plant chlorine tail gas absorption tower power-off self-starting device according to claim 1, wherein the generator (12) in the generator room is connected with the master control cabinet (14).

3. The power-off self-starting device of the chlorine tail gas absorption tower of the rare earth plant according to claim 2, wherein the master control room UPS power supply (13) is connected with the master control cabinet (14).

4. The device for automatically starting and stopping the power-off of the chlorine tail gas absorption tower of the rare earth plant according to claim 3, wherein the master control cabinet (14) is connected with the interlocking alarm (11), the induced draft fan (4), the blower (7) and the liquid alkali pump (9).