CN209791169U

CN209791169U - Exhaust gas purification device of plasma wood fiber oil-fired boiler

Info

Publication number: CN209791169U
Application number: CN201920273145.7U
Authority: CN
Inventors: 郭秀荣; 王姝婷; 宁宇; 毛建增; 王嘉瑗
Original assignee: Northeast Forestry University
Current assignee: Northeast Forestry University
Priority date: 2019-03-05
Filing date: 2019-03-05
Publication date: 2019-12-17
Anticipated expiration: 2029-03-05

Abstract

The utility model discloses the device mainly comprises high temperature resistant insulating plastic shell, lid and lid sealing device, wood fiber filter core and plasma ionization device. The inside purification treatment that discharges fume that carries out of high temperature resistant insulating plastic shell, lid and lid sealing device can guarantee the leakproofness of purifier that discharges fume at the during operation, and easily change the wood fibre filter core. The wood fiber filter element is used for filtering the smoke discharged by the oil-fired boiler. Meanwhile, annular ionizing electrode plates fixed on two sides of the upper surface of the shell form a plasma generator, an ionizing electric field is formed inside the device, and the gas is ionized on the basis of filtering of the wood fiber filter element, so that harmful gas is further decomposed. The wood fiber filter core is removable in the use, and the inside wood fiber of the filter core that changes down is degradable, and green can not cause secondary pollution to the environment.

Description

Exhaust gas purification device of plasma wood fiber oil-fired boiler

the technical field is as follows:

The utility model discloses the device relates to small-size oil fired boiler exhaust fume purification treatment's problem, and the device mainly utilizes wood fiber material preparation filter core and plasma to discharge fume the processing technique, belongs to environment-friendly oil fired boiler exhaust fume purification device.

Technical background:

In less developed areas of our country, relatively laggard or aged oil boilers are currently used. These oil boilers have problems of low management level, high pollution emission, poor combustion and the like, and particularly, harmful substances such as particulate matters, nitrogen oxides, sulfides and the like are easily generated when the combustion is poor, thereby causing damage to the air quality. How to treat the smoke pollution of the oil-fired boiler is an urgent problem.

the low-temperature plasma waste gas treatment equipment is generally adopted for waste gas treatment in China, but the waste gas treatment equipment still has the problems of heavy volume, low dust removal and desulfurization efficiency, easy corrosion of a treatment device and the like. Therefore, in order to solve the problem of smoke discharge treatment of small and medium-sized oil-fired boilers, a waste gas treatment device which is low in cost, easy to replace and simple in structure needs to be further improved and designed. The development of the smoke exhaust purification device has important significance for protecting the environment.

The utility model has the following contents:

the utility model discloses the device mainly comprises high temperature resistant insulating plastic shell, lid and lid sealing device, wood fiber filter core and plasma ionization device. The inside purification treatment that discharges fume that carries out of high temperature resistant insulating plastic shell, lid and lid sealing device can guarantee the leakproofness of purifier that discharges fume at the during operation, and easily change the wood fibre filter core. The wood fiber filter element is used for filtering the smoke discharged by the oil-fired boiler. Meanwhile, annular ionizing electrode plates positioned on the inner sides of the upper surface and the lower surface of the shell are connected with a plasma generator, an ionizing electric field is formed in the device, and gas is ionized on the basis of filtering of the wood fiber filter element, so that harmful gas is further decomposed. The wood fiber filter core is removable in the use, and the inside wood fiber of the filter core that changes down is degradable, and green can not cause secondary pollution to the environment.

the utility model discloses the device uses natural wood fiber material as exhaust fume purification device's filter core, and purification efficiency is high, and low cost belongs to environment-friendly type product. The original structure of the oil burning boiler is not required to be changed, and the oil burning boiler is simple to install and convenient to replace.

Description of the drawings:

FIG. 1 is a plasma wood fiber smoke exhaust purification device, which comprises a shell 1, an exhaust port 2, a ceramic tube 3, a cover 4, a cover sealing device 5, a plasma generator 6 and a positive electrode 7

FIG. 2 is a sectional view of the exhaust gas purifying apparatus, 8 plasma generator fixing grooves, 9 sealing ring holding grooves, 10 ionizing electrode plates, 11 cartridge fixing grooves I, 12 wood fiber cartridge, 13 cartridge fixing grooves II, and 14 cover edges

FIG. 3 is a three-dimensional view of a wood fiber filter core wire netting frame

The specific implementation mode is as follows:

the utility model discloses the device is total an air inlet and two gas vents 2, and the direction that boiler waste gas flows is shown as figure 2 arrow, filters waste gas by the wood fiber filter core of annular tube-shape earlier, and later enters into and carries out the ionization in the electric field and filter, at last by the waste gas after gas vent 2 discharge purifies. As shown in fig. 3, the internal wood fiber filter element 12 is composed of a wire mesh framework and long wood fibers, wherein the wire mesh framework is made into an annular cylinder shape, the long wood fibers with the thickness of 0.05-1mm, the width of 1-10mm and the length of 5-10mm are placed between two layers of wire mesh of the annular framework, and the wood fiber filter element is manufactured by drying. The gas flow movement causes the exhaust gas to pass through the annular cylindrical wood fiber filter element, and the gas is filtered. The inner sides of the upper surface and the lower surface of the shell are respectively fixed with an annular ionizing electrode plate 10 through bonding, and the two ionizing electrode plates have the same shape. The plasma generator 6 is fixed in a plasma generator fixing groove 8 on the upper surface of the housing. The wire connected to the positive electrode 7 and the wire connected to the negative electrode on the other symmetrical surface enter the smoke exhaust device from the ceramic tube 3 on the upper surface and the ceramic tube on the side surface of the shell 1 respectively to be connected with the two ionization electrode plates 10, and the ceramic tubes are sealed by using insulating glue after the wires are installed. The two ionization electrode plates are positively charged and negatively charged, and an electric field formed between the two ionization electrode plates can ionize the waste gas in the smoke exhaust purification device, decompose the waste gas and purify the waste gas. The waste gas after being filtered by the wood fiber filter element and ionized by the ionizing electrode plate is discharged through the two exhaust ports 2. The filtering and ionizing substances, such as carbon black and sulfur, are adsorbed on the wood fiber filter element, the performance of the filter element is reduced along with the increase of the filtered particulate matters, and the filter element can be replaced by a new filter element after the use limit is reached.

Replacing the filter element requires removal of the old filter element and installation of a new filter element. When the filter element is installed, the lower part of the wood fiber filter element 12 is inserted into a filter element fixing groove I11 in the smoke exhaust device, when the cover 4 is buckled, the upper part of the filter element is aligned to a filter element fixing groove II 13 on the cover, and the two-way fixing of the wood fiber filter element 12 is realized through an upper groove and a lower groove. The sealing ring is placed at the sealing ring placing groove 9, and the sealing ring is matched with the edge 14 of the cover when the cover is covered. The lid sealing means 5 consists of a rectangular iron block, a bolt and a nut. The bolt is connected with the plastic shell in an injection molding embedding mode, and the iron block and the nut are fixed on the bolt and can rotate. After the lid 4 is closed, the lid is pressed by the lid sealing means 5 to achieve a sealing effect. The concrete operation is to rotate a rectangular iron block fixed on a bolt towards the direction of the cover, tighten a nut, press the cover by the rectangular iron block, and operate two symmetrical cover sealing devices 5. The operations are opposite when the filter element is taken down, and the structure realizes the replacement of the filter element and ensures the sealing function of the smoke exhaust purification device during the work.

Claims

1. The utility model provides a plasma wood fiber oil fired boiler exhaust fume purification device which characterized in that: the device comprises a high-temperature-resistant insulating plastic shell, a cover sealing device, a wood fiber filter element and a plasma ionization device.

2. The exhaust fume purification device of the plasma wood fiber fuel boiler as recited in claim 1, wherein the wood fiber filter element is composed of a wire gauze frame and wood fibers, the wire gauze frame is a circular cylindrical wire gauze, long wood fibers with thickness of 0.05-1mm, width of 1-10mm and length of 5-10mm are placed between two layers of wire gauze of the circular frame, and the wood fiber filter element is made by drying, and the wood fiber filter element is fixed in two directions by the filter element fixing groove on the cover and the filter element fixing groove on the shell.

3. The plasma wood fiber fuel boiler flue gas purification device of claim 1, wherein the plasma ionization device comprises a plasma generator and two annular ionization electrode plates with the same shape, the annular ionization electrode plates are respectively fixed on the inner sides of the upper surface and the lower surface of the shell through bonding, the plasma generator is fixed in a plasma generator fixing groove on the upper surface of the shell, an electric wire connected to the positive electrode of the plasma generator and an electric wire connected to the negative electrode through the other symmetrical surface, the ceramic tubes respectively enter the interior of the flue gas purification device through the ceramic tube on the upper surface and the ceramic tube on the side surface of the shell, and are connected with the two ionization electrode plates, one of the two ionization electrode plates is positively charged and the other is negatively charged, and an electric field formed between the two ionization electrode plates can ionize the flue gas in.