CN210786678U - Tail gas recovery equipment in ethylene device - Google Patents

Abstract

The utility model discloses a tail gas recovery equipment among ethylene device, including one-level clean room, second grade clean room, reacting chamber and high-efficient filter chamber, install tail gas import, first baffle, second baffle, third baffle, first landing leg and lower hopper on the one-level clean room, first gas-supply pipe fixedly connected with second grade clean room is passed through to one-level clean room upper end right part, install installation frame, sponge bed course, shower nozzle and water inlet on the second grade clean room. The utility model discloses a set up one-level clean room, second grade clean room, reacting chamber and high-efficient filter chamber, this equipment impurity has carried out multilayer classification to tail gas in, and the result after the processing can be used as other chemical production's raw materials, has saved the raw materials, simultaneously, has also improved the efficiency of purification, has guaranteed operation environment's air quality.

Description

Tail gas recovery equipment in ethylene device

Technical Field

The utility model relates to an ethylene device technical field specifically is a tail gas recovery plant among ethylene device.

Background

The ethylene device is a petrochemical device which takes petroleum or natural gas as raw materials, mainly produces high-purity ethylene and propylene and produces a plurality of petrochemical raw materials as byproducts. The cracking raw material is subjected to high-temperature cracking, compression and separation in an ethylene device to obtain ethylene and important byproducts such as propylene, butadiene, benzene, toluene, xylene and the like. When the ethylene device is operated, a large amount of tail gas is generated, the tail gas has certain toxicity, and the health of operators is seriously threatened if the tail gas is not treated. The tail gas recovery equipment of the existing ethylene device has the disadvantages that tail gas recovery and purification are not comprehensive, tail gas can not be recovered and purified in a classified mode, the purification treatment mode is simple, and the treatment effect is poor. Therefore, a tail gas recovery device in an ethylene device is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a tail gas recovery plant among ethylene device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a tail gas recovery equipment among ethylene device, includes one-level clean room, second grade clean room, reaction chamber and high-efficient filter chamber, install tail gas import, first baffle, second baffle, third baffle, first landing leg and lower hopper on the one-level clean room, one-level clean room upper end right part is through first gas-supply pipe fixedly connected with second grade clean room, install installation frame, sponge bed course, shower nozzle and water inlet on the second grade clean room, second grade clean room upper end right-hand member passes through second gas-supply pipe fixed connection reaction chamber, install reactant filling opening, electric heating rod, agitator rotor, motor and second landing leg on the reaction chamber, reaction chamber upper end right part is through third gas-supply pipe fixedly connected with high-efficient filter chamber, install HEPA high-efficient filter screen, active carbon filter screen, impeller and gas outlet on the high-efficient filter chamber.

Preferably, the inner cavity of the one-level dust removal chamber is sequentially and fixedly provided with a first baffle, a second baffle and a third baffle from left to right, the heights of the first baffle, the second baffle and the third baffle gradually decline in sequence, the tail gas inlet is fixedly connected with at the middle part of the right end of the one-level dust removal chamber, the hopper is fixedly connected with at the middle part of the bottom of the one-level dust removal chamber, the switch valve is installed at the lower end of the hopper, and the first supporting leg is fixedly welded at the left part and the right part of the lower end of the one-level dust removal chamber.

Preferably, the sponge cushion is fixedly mounted on the upper portion of the inner cavity of the secondary dust removal chamber through a mounting frame, the spray head is fixedly mounted at the top end of the secondary dust removal chamber, and the water inlet is fixedly connected to the middle of the upper end of the spray head.

Preferably, the equal fixed mounting in both parts has the electrical heating rod about the reaction chamber inner chamber lower extreme, reaction chamber inner chamber bottom middle part movable mounting has stirring rotor, stirring rotor bottom fixedly connected with motor, reaction chamber top right part fixed connection has the reactant filling opening, the equal fixed welding in both parts has the second landing leg about the reaction chamber lower extreme.

Preferably, high-efficient filter chamber inner chamber from the top down fixed mounting has HEPA high efficiency filter screen, active carbon filter screen and impeller in proper order, impeller middle-end grafting connecting rod, connecting rod bottom mounting pegs graft in the inner ring of bearing, bearing fixed mounting is in the bottom of high-efficient filter chamber, high-efficient filter chamber upper end right part fixedly connected with gas outlet.

Compared with the prior art, the beneficial effects of the utility model are that: the tail gas recovery equipment in the ethylene device comprises a first-stage dust removal chamber, a second-stage dust removal chamber, a reaction chamber and a high-efficiency filter chamber, wherein the flow direction of tail gas airflow is changed by utilizing a first baffle, a second baffle and a third baffle, particle impurities in the tail gas sink into a blanking hopper by utilizing the action of inertia force, a sponge cushion layer is sprayed with moisture by utilizing a spray head, the sponge cushion layer can carry out secondary dust removal treatment on the particle impurities in the tail gas, meanwhile, impurities which are easy to dissolve in water in the tail gas are dissolved and sink into the second-stage sinking chamber, a reactant is heated by utilizing an electric heating rod, and a motor is matched to drive a stirring rotor to stir the reactant, so that the reaction efficiency of the tail gas and the reactant is improved, the airflow is blown away by utilizing an impeller, the tail gas is sequentially filtered by an active carbon filter screen and an HEPA high-efficiency filter screen, bacteria in the tail gas are intercepted, comprehensively, the equipment carries out multilayer classification treatment on impurities in tail gas, and the treated product can be used as raw materials of other chemical production, so that the raw materials are saved, meanwhile, the purification efficiency is improved, and the air quality of the operation environment is ensured.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a sectional view of the first-stage dust chamber of the present invention;

FIG. 3 is a sectional view of the second stage dust chamber of the present invention;

FIG. 4 is a cross-sectional view of the reaction chamber of the present invention;

figure 5 is a sectional view of the high efficiency filtering chamber of the present invention.

In the figure: 1 one-level clean room, 11 tail gas import, 12 first baffle, 13 second baffle, 14 third baffle, 15 first landing leg, 16 down the hopper, 2 first gas-supply pipe, 3 second grade clean room, 31 installation frame, 32 sponge bed course, 33 shower nozzles, 34 water inlet, 4 second gas-supply pipes, 5 reaction chambers, 51 reactant filling opening, 52 electric heating rod, 53 stirring rotor, 54 motor, 55 second landing leg, 6 third gas-supply pipe, 7 high-efficient filter chamber, 71 HEPA high-efficient filter screen, 72 active carbon filter screen, 73 impeller, 74 gas outlets.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a tail gas recovery device in an ethylene device comprises a primary dust removal chamber 1, a secondary dust removal chamber 3, a reaction chamber 5 and a high-efficiency filter chamber 7, wherein a tail gas inlet 11, a first baffle plate 12, a second baffle plate 13, a third baffle plate 14, a first leg 15 and a blanking hopper 16 are installed on the primary dust removal chamber 1, a first baffle plate 12, a second baffle plate 13 and a third baffle plate 14 are sequentially and fixedly installed in the inner cavity of the primary dust removal chamber 1 from left to right, the heights of the first baffle plate 12, the second baffle plate 13 and the third baffle plate 14 are sequentially and gradually reduced, the tail gas inlet 11 is fixedly connected to the middle part of the right end of the primary dust removal chamber 1, the blanking hopper 16 is fixedly connected to the middle part of the bottom end of the primary dust removal chamber 1, a switch valve is installed at the lower end of the blanking hopper 16, the first leg 15 is fixedly welded to the left part and the right part of the lower end of the primary dust, the first baffle plate 12, the second baffle plate 13 and the third baffle plate 14 are used for stopping the straight advance of the tail gas airflow, so that the airflow is quickly turned, and tiny particles in the tail gas are separated from the airflow under the action of inertia force and sink into the blanking hopper 16 to wait for centralized recovery processing. 1 upper end right part of one-level clean room is through first gas-supply pipe 2 fixedly connected with second grade clean room 3, install installation frame 31, sponge bed course 32, shower nozzle 33 and water inlet 34 on the second grade clean room 3, there is sponge bed course 32 on the inner chamber upper portion of second grade clean room 3 through installation frame 31 fixed mounting, sponge bed course 32 is corrosion-resistant sponge bed course 32, second grade clean room 3 top fixed mounting has shower nozzle 33, shower nozzle 33 upper end middle part fixedly connected with water inlet 34, in tail gas air current in the one-level clean room 1 flows into second grade clean room 3 through first gas-supply pipe 2, the tail gas air current begins to rise, shower nozzle 33 spun water droplet will spill on sponge bed course 32, makes sponge bed course 32 moist, and the tail gas air current is at the in-process that rises, need pierce through sponge bed course 32, and the porous structure of sponge bed course 32 can carry out secondary dust removal to the dust granule in the tail gas, meanwhile, the easily soluble gas in the tail gas is dissolved and drops into the secondary dust chamber 3. 3 upper end right-hand member of second grade clean room passes through second gas-supply pipe 4 fixed connection and has reaction chamber 5, install reactant filling opening 51, electric heating rod 52, stirring rotor 53, motor 54 and second landing leg 55 on the reaction chamber 5, the equal fixed mounting in two parts has electric heating rod 52 about 5 inner chamber lower extremes of reaction chamber, 5 inner chamber bottom middle part movable mounting of reaction chamber has stirring rotor 53, stirring rotor 53 bottom fixed connection has motor 54, 5 top right part fixedly connected with reactant filling opening 51 in the reaction chamber, 5 lower extremes about the reaction chamber 5 all fixed welding have second landing leg 55, add a quantitative reactant to reaction chamber 5 through reactant filling opening 51 to make second gas-supply pipe 4 insert in the reactant, tail gas flows to the reactant through second gas-supply pipe 4 in, and take place chemical reaction with the reactant, utilize electric heating rod 52 to heat the reactant, and the stirring rotor 53 is driven by the motor 54 to stir the reactant, so that the reaction efficiency of the reactant and the tail gas is improved, and in addition, substances generated by the reaction of the reactant and the tail gas can be used as other raw materials for chemical production. The high-efficiency filter chamber 7 is fixedly connected to the right upper end of the reaction chamber 5 through a third gas pipe 6, an HEPA high-efficiency filter screen 72, an activated carbon filter screen 71, an impeller 73 and a gas outlet 74 are installed on the high-efficiency filter chamber 7, the HEPA high-efficiency filter screen 72, the activated carbon filter screen 71 and the impeller 73 are sequentially and fixedly installed in the inner cavity of the high-efficiency filter chamber 7 from top to bottom, an inserting connection rod is inserted into the middle end of the impeller 73, the bottom end of the connection rod is fixedly inserted into an inner ring of a bearing, the bearing is fixedly installed at the bottom end of the high-efficiency filter chamber 7, the gas outlet 74 is fixedly connected to the right upper end of the high-efficiency filter chamber 7, tail gas obtained after reaction purification flows into the high-efficiency filter chamber 7 and blows the impeller 73 to rotate, under the rotating action of the impeller 73, airflow is dispersed, the efficiency of filtration is, the bacteria in the tail gas are intercepted, so that the tail gas is thoroughly purified.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a tail gas recovery equipment among ethylene device, includes one-level clean room (1), second grade clean room (3), reaction chamber (5) and high-efficient filter chamber (7), its characterized in that: install tail gas import (11), first baffle (12), second baffle (13), third baffle (14), first landing leg (15) and lower hopper (16) on one-level clean room (1), one-level clean room (1) upper end right part is through first gas-supply pipe (2) fixedly connected with second grade clean room (3), install installation frame (31), sponge bed course (32), shower nozzle (33) and water inlet (34) on second grade clean room (3), second grade clean room (3) upper end right-hand member passes through second gas-supply pipe (4) fixed connection reaction chamber (5), install reactant filling opening (51), electric heating rod (52), stirring rotor (53), motor (54) and second landing leg (55) on reaction chamber (5), reaction chamber (5) upper end right part is through third gas-supply pipe (6) fixedly connected with high-efficient filter chamber (7), the efficient filtering chamber (7) is provided with a HEPA efficient filtering net (72), an activated carbon filtering net (71), an impeller (73) and an air outlet (74).

2. The apparatus of claim 1 for recovering tail gas from an ethylene plant, comprising: one-level clean room (1) inner chamber from left to right is fixed mounting in proper order has first baffle (12), second baffle (13) and third baffle (14), and the height of first baffle (12), second baffle (13) and third baffle (14) descends gradually in proper order, the right-hand member middle part fixedly connected with tail gas inlet (11) of one-level clean room (1), hopper (16) under the bottom middle part fixedly connected with of one-level clean room (1), the ooff valve is installed to hopper (16) lower extreme down, the equal fixed welding in two parts has first landing leg (15) about the lower extreme of one-level clean room (1).

3. The apparatus of claim 1 for recovering tail gas from an ethylene plant, comprising: the inner chamber upper portion of second grade clean room (3) has sponge bed course (32) through installation frame (31) fixed mounting, second grade clean room (3) top fixed mounting has shower nozzle (33), shower nozzle (33) upper end middle part fixedly connected with water inlet (34).

4. The apparatus of claim 1 for recovering tail gas from an ethylene plant, comprising: the equal fixed mounting in two portions has electrical heating rod (52) about reacting chamber (5) inner chamber lower extreme, reacting chamber (5) inner chamber bottom middle part movable mounting has stirring rotor (53), stirring rotor (53) bottom fixedly connected with motor (54), reacting chamber (5) top right part fixed connection has reactant filling opening (51), the equal fixed welding in two portions has second landing leg (55) about reacting chamber (5) lower extreme.

5. The apparatus of claim 1 for recovering tail gas from an ethylene plant, comprising: high-efficient filter chamber (7) inner chamber from the top down fixed mounting have HEPA high efficiency filter screen (72), active carbon filter screen (71) and impeller (73) in proper order, impeller (73) middle-end grafting connecting rod, connecting rod bottom mounting is pegged graft in the inner ring of bearing, bearing fixed mounting is in the bottom of high-efficient filter chamber (7), high-efficient filter chamber (7) upper end right part fixedly connected with gas outlet (74).

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