JPH06233942A - Scrubber provided to draft chamber - Google Patents

Abstract

PURPOSE:To provide the subject scrubber excellent in gas scrubbing effect in spite of a small size. CONSTITUTION:This scrubber is equipped with a gas inlet 4 introducing the gas generated in a draft chamber, the chemical soln. storage chamber 6 communicating with the gas inlet and storing a chemical soln. subjected to the contact with the gas introduced from the gas inlet, the packing material chamber 11 provided above the chemical soln. storage chamber and provided with a packing material holding the chemical soln. and permitting the gas passed through the chemical soln. storage chamber to pass and the chemical soln. spray chamber 13 provided above the packing material chamber and equipped with a sprayer spraying the chemical soln. subjected to the contact with the gas passed through the packing material chamber. Further, a gas outlet 5 discharging the gas passed through the chemical soln. spray chamber is provided.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a scrubber provided in a draft chamber.

[0002]

2. Description of the Related Art Draft chambers are used for operations such as chemical experiments in which gas is generated. The draft chamber is designed to clean the gas discharged from the exhaust port of the draft chamber and to remove harmful substances contained in the gas. Some have a scrubber that performs a process of reducing the components. And
The scrubber is also installed above the ceiling of the draft chamber because the exhaust port of the draft chamber is generally installed above the ceiling. This type of scrubber is required to have a high gas cleaning effect and to be small in size for installation on the ceiling of the draft chamber.

This type of scrubber is classified into a sump type and a packed tower type. In the former type of scrubber, the gas is passed through a chamber in which the chemical liquid is stored and brought into contact with the chemical liquid, whereby the chemical liquid absorbs the harmful components contained in the gas to reduce the harmful components in the gas.

The latter type of scrubber has a filling chamber filled with an air-permeable substance holding a chemical liquid, and a spray chamber provided with a spray for spraying the chemical liquid, and gas is filled in the filling chamber. By passing through the spray chamber and then washing with a chemical sprayed from the spray, harmful components contained in the gas are reduced.

[0005]

However, in the pool type scrubber, in order to obtain a large cleaning effect, it is necessary to open the gas inlet of the chemical solution storage chamber narrowly. In this case, the gas is stored in the chemical solution storage chamber. There is a large pressure loss when passing through the chamber.

Further, in the packed tower type scrubber, it is necessary to make the packing material in the packing chamber sufficiently thick in order to obtain a sufficient cleaning effect. In this case, the filling chamber becomes large,
As a result, there is a problem that the entire scrubber becomes large and it becomes impossible to meet the demand for downsizing.

The present invention has been made in view of the above circumstances, and an object thereof is to obtain a scrubber provided in a draft chamber which is small in size but has a sufficiently excellent gas cleaning effect.

[0008]

In order to achieve the above-mentioned object, a scrubber provided in a draft chamber of the present invention comprises a gas inlet for introducing gas generated in the draft chamber,
The chemical liquid reservoir chamber which is in communication with the gas inlet and which contacts the gas introduced from the gas inlet, and the chemical liquid reservoir chamber provided above the chemical liquid reservoir chamber for holding the chemical liquid and passing through the chemical liquid reservoir chamber A filling chamber provided with a filling passing therethrough, a chemical spray chamber provided on the upper side of the filling chamber and provided with a spray for spraying a chemical to be brought into contact with the gas passing through the filling chamber, and the chemical spray chamber And a gas outlet for discharging the gas that has passed through.

[0009]

The gas projected from the exhaust port of the draft chamber enters the chemical solution reservoir chamber through the gas inlet and comes into contact with the chemical solution accumulated in the chemical solution reservoir chamber. The gas then passes through the fill in the fill chamber and contacts the chemical held in the fill. Next, the gas enters the chemical spray chamber, comes into contact with the chemical sprayed from the spray, is washed, and is discharged from the gas outlet. As a result, the harmful components contained in the gas are absorbed by the chemical liquid, and the harmful components in the gas are reduced.

According to the above construction, the pressure loss of the chemical liquid reservoir chamber, which is a stored water type scrubber, is prevented from increasing, and the portion lacking the cleaning effect is filled with the filling tower type scrubber and the chemical liquid spray chamber. Is supplemented with. In other words, without increasing the thickness of the filling chamber, the chemical liquid storage chamber compensates for the insufficient cleaning effect of the filling chamber and the chemical spray chamber.

The chemical liquid storage chamber also serves as a portion which is held by the filling material in the filling material chamber and receives the falling chemical liquid. That is, the packed tower type scrubber is provided with a chemical liquid receiving chamber that receives the chemical liquid held by the filling material in the filling chamber and falling, but the chemical liquid reservoir chamber is provided by directly utilizing the space of the chemical liquid receiving chamber. Has been. Therefore, the chemical liquid reservoir can be provided without adding a new space to the packed tower type scrubber. Therefore, the scrubber of the present invention can improve the cleaning effect as compared with the conventional one without increasing the size of the conventional packed tower type scrubber.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. In this embodiment, a pair of a chemical liquid reservoir chamber, a filling chamber and a chemical liquid spray chamber are provided symmetrically in the left and right directions.

In the figure, reference numeral 1 denotes a main body case, which is installed on the ceiling of the draft chamber 21. A pair of vertical partition walls 2 extending vertically in the center of the inside of the body case 1.
Are arranged at a predetermined interval, and a horizontal partition wall 3 extending horizontally is disposed at an intermediate position in the height direction between the pair of vertical partition walls 2.

At the center of the bottom wall of the body case 1, a tubular gas inlet body 4 is attached so as to penetrate the inside and outside of the body case 1. The gas inlet body 4 is connected to an exhaust port (not shown) provided in the ceiling of the draft chamber 21. At the center of the ceiling wall of the main body case 1, a tubular gas outlet body 5 is attached so as to penetrate the inside and outside of the main body case 1.

Between the pair of vertical partition walls 2 and the side wall of the main body case 1 facing the vertical partition walls 2, a chemical liquid reservoir 6 is formed at a lower position in the height direction. Each chemical solution storage chamber 6 is for cleaning the gas and storing the chemical solution Y necessary for removing harmful components.

In each of the chemical liquid reservoirs 6, a gap between the lower end of the pair of vertical partition walls 2 and the bottom wall of the main body case 1 serves as a gas inlet 7, and each vertical partition wall 2 has a gas flow. A movable partition plate 8 for adjusting the opening area of the entrance 7 is provided. That is, when each movable partition plate 8 is moved up and down, the size of the opening area of each gas inflow port 7 can be changed. Each gas inlet 7 communicates with the gas inlet 4 via a gas passage 9 formed between the gas inlet 4 and the lower end of each vertical partition 2.

A drain port 10 is attached to the bottom of the main body case 1 in each chemical liquid reservoir 6. Each drain port body 10 is attached so as to penetrate the inside and outside of the main body case 1. That is, the wall portion of each drainage body 10 is provided so as to rise inside each chemical liquid storage chamber 6, and the slit 10a is formed at each rising portion.

Between the pair of vertical partition walls 2 and the side wall of the main body case 1 facing these vertical partition walls 2, each chemical solution storage chamber 6 is provided.
Filling chambers 11 are respectively provided on the upper side of the.
A filling 12 is provided in each filling chamber 11.

A chemical spray chamber 13 is provided above each filling chamber 11.
Are provided respectively. Gas outlets 15 are formed between the upper ends of the pair of vertical partition walls 2 and the ceiling of the main body case 1. In addition, the upper ends of the pair of vertical partition walls 2 and the main body case 1
The gas passages 16 are formed between the cylinder 14 and the cylinder 14 attached to the center of the ceiling.

Sprays 17 are attached to the ceiling of the main body case 1 in each chemical spray chamber 13, and each spray 17 is connected via a valve 18 to a pump and a chemical tank (not shown). The cylindrical body 14 is provided with a mist separator 19. 20 is a differential pressure gauge. The operation of the scrubber thus configured will be described.

By operating the chemical liquid pump, the chemical liquid Y stored in the chemical liquid tank is sent to the sprays 17 provided in the chemical liquid spray chambers 13 of the main body case 1, and sprayed from the sprays 17 into the chemical liquid spray chambers 13. . The chemical liquid sprayed inside each chemical liquid spray chamber 13 permeates into the inside of the filling material 12 in each filling material chamber 11 located below each chemical liquid spraying chamber 13 and is held in each filling material 12.

Further, the chemical liquid drops from each filling 12 and is stored in each chemical storage chamber 6 located below each filling chamber 11. The chemical liquid stored in each chemical liquid storage chamber 6 is discharged to the chemical liquid tank from each drain port 10 provided on the bottom surface of each chemical liquid storage chamber 6.

The gas discharged from the exhaust port of the draft chamber is divided into two parts from the gas inlet body 4 of the main body case 1, passes through each gas passage 9 on the left and right sides, and enters each chemical solution reservoir chamber 6 from each gas inlet 7. Here, the gas comes into contact with the chemical liquid Y stored in each liquid storage chamber 6. Next, the gas rises and passes through each packing chamber 11 located above each liquid storage chamber 6,
The chemical solution Y held in each filling 12 provided in the above is contacted.

Next, the gas rises and enters each of the liquid medicine spray chambers 13 located above each of the filling chambers 11, and each of the sprays 17
It is cleaned by coming into contact with the chemical liquid Y sprayed from. afterwards,
The gas passes through the gas outlet 15, the gas passage 16, and further passes through the mist separator 19, and is discharged from the gas outlet body 5 to the outside.

The gas discharged from the exhaust port of the draft chamber 21 as described above contacts the chemical solution Y a plurality of times. As a result, the k chemical absorbs the harmful components contained in the gas and reduces the harmful components in the gas.

In this embodiment, the pressure loss of each chemical liquid storage chamber 6 which is a stored water type scrubber is prevented from increasing so that the insufficient cleaning effect is caused by the filling chamber 11 which is a packed tower type scrubber and the chemical liquid. Supplement with the spray chamber 13. In other words, without increasing the thickness of the filling chamber 11,
The chemical liquid reservoir chamber 6 compensates for the insufficient cleaning effect of the chemical liquid spray chamber 13.

The chemical reservoir 6 is filled with the filling material 12 in the filling material chamber 11.
It also serves as a portion for receiving the chemical solution Y held by and falling. That is, the packed tower type scrubber is provided with a chemical liquid receiving chamber for receiving the chemical liquid Y held by the filling material in the filling chamber and falling, but the chemical liquid reservoir chamber 6 uses the space of the chemical liquid receiving chamber as it is. Is provided. For this reason,
The chemical solution storage chamber 6 can be provided without adding a new space to the packed tower type scrubber. Therefore, the scrubber of the present invention can improve the cleaning effect as compared with the conventional one without further increasing the size of the conventional packed tower type scrubber.

Further, in this embodiment, the movable partition plate 8 can be moved up and down to change the size of the opening area of the gas inflow port 7 in each chemical solution storage chamber 6. By adjusting the opening area of each gas inflow port 7, the degree of cleaning effect and pressure loss in each chemical solution storage chamber 6 changes. This makes it possible to handle a wide range of gas airflow with one model,
Furthermore, it is possible to deal with changes in usage conditions after the start of use.

Each of the liquid outlets 10 provided for discharging the used chemical liquid Y on the bottom surface of each chemical liquid storage chamber 6 rises inside the chemical liquid storage chamber 6, and the slit 10 is formed at the rising portion.
a is formed. During use, the depth of the drug solution Y to be stored is determined according to the rising height of the drainage body 10. When not using the scrubber, the slit 1 of each drain port body 10
Since the chemical liquid Y is discharged from 0a and the chemical liquid Y does not remain inside each chemical liquid storage chamber 6, a condensate does not come out after a long time from the end of use.

In this embodiment, a pair of liquid storage chambers 6, a pair of filling chambers 11 and a pair of chemical liquid spray chambers 13 are symmetrically arranged on the left and right sides centering on the gas inlet body 4 and the gas outlet body 5. . Therefore, there is no bias in the gas flow passing through the scrubber. When the gas flow is unevenly distributed, problems such as increased pressure loss, generation of noise, and reduced cleaning effect may occur. It should be noted that the present invention is not limited to the above-described embodiments, and can be implemented with various modifications.

[0031]

As described above, according to the present invention, since the liquid storage chamber, the filling chamber, and the chemical liquid spray chambers are provided one above the other, they have a small size and an excellent cleaning effect against gas. A scrubber for the draft chamber can be obtained.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of a scrubber according to an embodiment of the present invention.

[Explanation of symbols]

1 ... Main body case, 4 ... Gas inlet body, 5 ... Gas outlet body, 6
... chemical solution storage chamber, 11 ... filling room, 13 ... chemical solution spray chamber.

Claims (1)

[Claims] 1. A gas inlet for introducing the gas generated in the draft chamber, a chemical liquid reservoir chamber for communicating with the gas inlet and storing a chemical liquid with which the gas introduced from the gas inlet contacts, and a chemical liquid reservoir of the chemical liquid reservoir chamber. A filling chamber provided with a filling for holding the chemical liquid provided on the upper side and passing through the chemical liquid storage chamber, and a gas provided on the upper side of the filling chamber and passing through the filling chamber. A scrubber provided in a draft chamber, comprising: a chemical spray chamber having a spray for spraying a chemical to be brought into contact; and a gas outlet for discharging the gas passing through the chemical spray chamber.