CN213811796U

CN213811796U - Denitration device for copper smelting furnace

Info

Publication number: CN213811796U
Application number: CN202022909099.0U
Authority: CN
Inventors: 许晓利; 杨建桥; 张朝民; 李喜平
Original assignee: Zhengzhou Yongjie Environmental Protection Technology Co ltd
Current assignee: Zhengzhou Yongjie Environmental Protection Technology Co ltd
Priority date: 2020-12-07
Filing date: 2020-12-07
Publication date: 2021-07-27
Anticipated expiration: 2030-12-07

Abstract

The utility model belongs to the technical field of flue gas denitration, in particular to a denitration device of a copper smelting furnace, which comprises a copper smelting furnace, a denitration tank and a urea dissolving tank, urea holding vessel and cooling tank, copper smelting furnace left side upper portion links to each other through intake pipe and cooling tank right side lower part, cooling tank left side middle part is connected with the air-blower through the tuber pipe, cooling tank upside middle part links to each other with denitration jar right side lower part through the gas-supply pipe, the fluid-discharge tube of denitration jar lower surface middle part connection, the fluid-discharge tube below is provided with the liquid-collection box, the filter screen is installed to denitration jar inner lower part, denitration jar inner upper portion is provided with the branch liquid pipe, divide liquid pipe lower surface evenly to install the shower nozzle, divide liquid pipe upper surface middle part to pass through the transfer line and link to each other with urea holding vessel right side lower part, denitration jar right side upper. The device is used for treating the flue gas of the copper smelting furnace, and NO in the flue gas is reduced_XThe emission concentration reaches the standard.

Description

Denitration device for copper smelting furnace

Technical Field

The utility model belongs to the technical field of the flue gas denitration, especially, relate to a copper smelting furnace denitrification facility.

Background

The copper smelting furnace is used for melting and reducing metal copper, and discharges a large amount of flue gas containing a large amount of NO in the production process_X，NO_XDirect discharge into the environment can cause serious harm to the natural environment and human production and life, and the nation has NO harm_XThe emission concentration control of the copper smelting furnace is stricter and the NO of the flue gas discharged in the production process of the copper smelting furnace at present_XExceed standard, need increase denitration device and reform transform, but current copper smelting furnace generally does not set up denitrification facility, perhaps the denitrification facility denitration that sets up is not thorough, the flue gas NO of emission_XThe concentration can not reach the discharge standard; therefore, how to overcome the above technical problems and disadvantages is a problem to be solved.

Disclosure of Invention

The utility model aims at overcoming the not enough of prior art, and provide a copper smelting furnace denitrification facility, utilize this device to handle copper smelting furnace flue gas, reduced NO in the flue gas_XThe emission concentration reaches the standard.

The purpose of the utility model is realized like this: a denitration device of a copper smelting furnace comprises the copper smelting furnace and a denitration tank, and also comprises a urea dissolving tank, a urea storage tank and a cooling tank, wherein the upper part of the left side of the copper smelting furnace is connected with the lower part of the right side of the cooling tank through an air inlet pipe, an exhaust fan A is installed on the air inlet pipe, the inner walls of the left side and the right side of the cooling tank are fixedly connected with a drainage plate, the middle part of the left side of the cooling tank is connected with an air pipe, the other end of the air pipe is connected with an air blower, a temperature sensor is installed on the left side of the inner wall of the upper side of the cooling tank, a display screen is installed on the upper part of the left side of the cooling tank and electrically connected with the temperature sensor, the middle part of the upper side of the cooling tank is connected with the lower part of the right side of the denitration tank through an air pipe, an exhaust fan B is installed on the air pipe, a liquid discharge pipe is connected with the middle part of the lower surface of the denitration tank, a liquid discharge valve is installed on the liquid discharge pipe, and a liquid collection tank is arranged below the liquid discharge pipe, a filter screen is installed at the lower part in the denitration tank, guide plates are fixedly connected with the inner walls of the left side and the right side of the denitration tank, the guide plates are positioned above the filter screen, a liquid distribution pipe is arranged at the upper part in the denitration tank, the left side and the right side of the upper surface of the liquid distribution pipe are connected with the inner wall of the upper side of the denitration tank through connecting rods, spray heads are uniformly installed on the lower surface of the liquid distribution pipe, the spray heads are positioned above the guide plates, the middle part of the upper surface of the liquid distribution pipe is connected with the lower part of the right side of the urea storage tank through a liquid distribution pipe, a flow meter and a jet pump are installed on the liquid distribution pipe, the flow meter is positioned at the right side of the jet pump, an exhaust pipe is connected at the upper part of the denitration tank, a driving motor B is installed at the middle part of the upper surface of the urea storage tank, an output shaft B of the driving motor B is connected with a stirring shaft B, stirring blades B are fixedly connected with a steam inlet pipe on the stirring shaft B, advance to install on the steam pipe and advance the steam valve, urea holding vessel upper surface left side is passed through the conveyer pipe and is linked to each other with urea dissolving tank right side lower part, install the delivery pump on the conveyer pipe, urea dissolving tank upper surface mid-mounting has driving motor A, driving motor A's output shaft has (mixing) shaft A, fixedly connected with stirring vane A on the (mixing) shaft A, urea dissolving tank upper surface right side is connected with the charge door, urea dissolving tank upper surface left side is connected with the inlet tube, install the water intaking valve on the inlet tube.

Further, the stirring shaft A is connected with the urea dissolving tank through a bearing.

Further, the stirring shaft B is connected with a urea storage tank through a bearing.

Further, the height of the free end of the guide plate is lower than that of the fixed end of the guide plate.

Furthermore, the height of the free end of the drainage plate is lower than that of the fixed end of the drainage plate.

Furthermore, a sealing plug is plugged at the upper end of the feed opening, so that dust can be prevented from entering the urea dissolving tank, and liquid can be prevented from splashing out of the feed opening in the stirring process.

The utility model discloses a copper smelting furnace denitrification facility's beneficial effect:

1. the utility model discloses a copper smelting furnace denitrification facility is provided with a cooling tank, high temperature flue gas generated in the production process of the copper smelting furnace is introduced into the cooling tank by an exhaust fan A, cooling air is blown into the cooling tank by an air blower, the high temperature flue gas is cooled by the cooling air, the inner walls of the left side and the right side of the cooling tank are fixedly connected with a drainage plate, the high temperature flue gas and the cooling air are raised in the cooling tank in an S shape by the drainage plate, the high temperature flue gas can be fully cooled by the cooling air, a temperature sensor is arranged on the left side of the inner wall of the upper side of the cooling tank, the temperature sensor senses the temperature of the cooled flue gas, a display screen is arranged on the upper part of the left side of the cooling tank, the display screen is electrically connected with the temperature sensor, the temperature of the flue gas in the cooling tank can be directly observed from the display screen, the amount of the high temperature flue gas and the cooling air in the cooling tank can be adjusted by controlling the rotating speed of the exhaust fan A and the air blower, cooling the high-temperature flue gas in the cooling tank to 900-1150 ℃ by cooling air, introducing the cooled flue gas into the denitration tank by using an exhaust fan B, and spraying urea solution and then rapidly decomposing the urea solution into NH₃And with NO in the flue gas_XReaction to produce N₂And H₂O。

2. The utility model discloses a copper smelting furnace denitrification facility is provided with urea dissolving tank and urea holding vessel, adds the urea raw materials in to the urea dissolving tank through the charge door, through the inlet tubeAdding hot soft water with the temperature of 30-50 ℃ into a urea dissolving tank, dissolving urea into urea solution with the concentration of 10% by stirring with a stirring blade A on a stirring shaft A, conveying the dissolved urea solution into a urea storage tank under the action of a conveying pump, adding steam into the urea storage tank through a steam inlet pipe, heating the urea solution by stirring with a stirring blade B, conveying the urea solution in the urea storage tank into a liquid separating pipe through a jet pump, spraying the urea solution into the denitration tank through a spray head on the lower surface of the liquid separating pipe, wherein the urea solution moves in the denitration tank from top to bottom, the cooled flue gas moves in a reverse direction from bottom to top in the denitration tank, sufficient denitration is facilitated, guide plates are fixedly connected to the inner walls of the left side and the right side of the denitration tank, and the guide plates enable the urea solution and the flue gas to move in an S shape in the denitration tank, make it fully contact, improve denitration effect, make the flue gas NO who discharges_XReach the standard and do not harm the environment and the production and the life of human beings.

3. The utility model discloses a flowmeter and jet pump are installed to copper smelting furnace denitrification facility on the transfer line, and the flowmeter is located the jet pump right side, can control the flow that gets into urea solution in the denitration jar, makes urea solution fully carry out denitration treatment to the flue gas, improves the denitration effect.

Drawings

Fig. 1 is the utility model discloses a copper smelting furnace denitrification facility's schematic structure diagram.

In the figure: 1-a water inlet valve, 2-a water inlet pipe, 3-a driving motor A, 4-a charging port, 5-a conveying pipe, 6-a driving motor B, 7-a steam inlet pipe, 8-a steam inlet valve, 9-a liquid conveying pipe, 10-a liquid separating pipe, 11-a spray head, 12-a connecting rod, 13-an exhaust pipe, 14-a gas conveying pipe, 15-a display screen, 16-a temperature sensor, 17-a cooling tank, 18-a gas inlet pipe, 19-a copper smelting furnace, 20-an exhaust fan A, 21-a drainage plate, 22-a wind pipe, 23-a blower, 24-an exhaust fan B, 25-a denitration tank, 26-a liquid discharging pipe, 27-a liquid collecting tank, 28-a liquid discharging valve, 29-a filter screen, 30-a guide plate and 31-a flow meter, 32-jet pump, 33-urea storage tank, 34-stirring shaft B, 35-stirring blade B, 36-conveying pump, 37-urea dissolving tank and 38-stirring shaft A, 39-stirring blade A.

Detailed Description

The denitration device for the copper smelting furnace of the present invention is described in more detail with reference to the accompanying drawings and specific embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1, a denitration device of a copper smelting furnace comprises a copper smelting furnace 19, a denitration tank 25, a urea dissolving tank 37, a urea storage tank 33 and a cooling tank 17, wherein the upper part of the left side of the copper smelting furnace 19 is connected with the lower part of the right side of the cooling tank 17 through an air inlet pipe 18, an exhaust fan A20 is installed on the air inlet pipe 18, flow guide plates 21 are fixedly connected with the inner walls of the left side and the right side of the cooling tank 17, an air pipe 22 is connected with the middle part of the left side of the cooling tank 17, an air blower 23 is connected with the other end of the air pipe 22, a temperature sensor 16 is installed on the left side of the inner wall of the upper side of the cooling tank 17, a display screen 15 is installed on the upper part of the left side of the cooling tank 17, the display screen 15 is electrically connected with the temperature sensor 16, the middle part of the upper side of the cooling tank 17 is connected with the lower part of the right side of the denitration tank 25 through an air pipe 14, an exhaust fan B24 is installed on the air pipe 14, and a liquid discharge pipe 26 is connected with the middle part of the lower surface of the denitration tank 25, a liquid discharge valve 28 is installed on the liquid discharge pipe 26, a liquid collection tank 27 is arranged below the liquid discharge pipe 26, a filter screen 29 is installed at the lower part in the denitration tank 25, guide plates 30 are fixedly connected to the inner walls of the left side and the right side of the denitration tank 25, the guide plates 30 are positioned above the filter screen 29, a liquid distribution pipe 10 is arranged at the upper part in the denitration tank 25, the left side and the right side of the upper surface of the liquid distribution pipe 10 are connected with the inner wall of the upper side of the denitration tank 25 through connecting rods 12, spray heads 11 are uniformly installed on the lower surface of the liquid distribution pipe 10, the spray heads 11 are positioned above the guide plates 30, the middle part of the upper surface of the liquid distribution pipe 10 is connected with the lower part of the right side of a urea storage tank 33 through a liquid conveying pipe 9, a flow meter 31 and an injection pump 32 are installed on the liquid conveying pipe 9, the flow meter 31 is positioned at the right side of the injection pump 32, an exhaust pipe 13 is connected to the upper part of the right side of the denitration tank 25, and a driving motor B6 is installed at the middle part of the upper surface of the urea storage tank 33, driving motor B6's output shaft has (mixing) shaft B34, fixedly connected with stirring vane B35 on the (mixing) shaft B34, urea holding vessel 33 upper surface right side is connected with into steam pipe 7, it installs into steam valve 8 on the steam pipe 7 to advance, urea holding vessel 33 upper surface left side links to each other with urea dissolving tank 37 right side lower part through conveyer pipe 5, install delivery pump 36 on the conveyer pipe 5, urea dissolving tank 37 upper surface mid-mounting has driving motor A3, driving motor A3's output shaft has (mixing) shaft A38, fixedly connected with stirring vane A39 on the (mixing) shaft A38, urea dissolving tank 37 upper surface right side is connected with charge door 4, urea dissolving tank 37 upper surface left side is connected with inlet tube 2, install water intaking valve 1 on the inlet tube 2.

Referring to fig. 1, the stirring shaft a38 is connected to the urea dissolving tank 37 through a bearing.

Referring to fig. 1, the stirring shaft B34 is connected to the urea storage tank 33 through a bearing.

Referring to fig. 1, the free end of the baffle 30 is at a lower elevation than the fixed end of the baffle 30.

Referring to FIG. 1, the height of the free end of the flow guide plate 21 is lower than the height of the fixed end of the flow guide plate 21.

The upper end of the feed inlet 4 is plugged with a sealing plug, so that dust can be prevented from entering the urea dissolving tank 37, and liquid can be prevented from splashing out of the feed inlet 4 in the stirring process.

The working principle of the embodiment is as follows: utilize air exhauster A20 to lead the high temperature flue gas that produces in 19 production processes of copper smelting furnace to the cooling tank 17 in, utilize air-blower 23 to blow into the cooling tank 17 cooling air, utilize the cooling air to carry out cooling treatment to the high temperature flue gas, the drainage plate 21 that the inner wall of the left and right sides of cooling tank 17 linked firmly makes high temperature flue gas and cooling air be the S-shaped and rises in cooling tank 17, be favorable to the cooling air to carry out abundant cooling to the high temperature flue gas, the temperature sensor 16 induction cooling back of the installation of the upside inner wall left side of cooling tank 17The temperature of the flue gas in the cooling tank 17 can be directly observed from a display screen 15 arranged on the upper part of the left side of the cooling tank 17, the amount of the high-temperature flue gas and the cooling air in the cooling tank 17 is adjusted by controlling the rotating speed of an exhaust fan A20 and an air blower 23, so that the cooling air cools the high-temperature flue gas in the cooling tank 17 to 900-1150 ℃, the cooled flue gas is guided into a denitration tank 25 by an exhaust fan B24, a urea raw material is added into the urea dissolving tank 37 through a feed inlet 4, hot soft water with the temperature of 30-50 ℃ is added into the urea dissolving tank 37 through a water inlet pipe 2, the urea is dissolved into a urea solution with the concentration of 10% by stirring by a stirring blade A39 on a stirring shaft A38, the dissolved urea solution is conveyed into a urea storage tank 33 under the action of a conveying pump 36, steam is added into the urea storage tank 33 through a steam inlet pipe 7, and the urea solution is heated by the stirring blade B35, then the urea solution in the urea storage tank 33 is sent to the liquid distribution pipe 10 through the injection pump 32, the urea solution is sprayed into the denitration tank 25 through the spray head 11 on the lower surface of the liquid distribution pipe 10, the movement direction of the urea solution in the denitration tank 25 is from top to bottom, the movement direction of the cooled flue gas in the denitration tank 25 is from bottom to top and moves reversely, sufficient denitration is facilitated, the guide plates 30 fixedly connected with the inner walls of the left side and the right side of the denitration tank 25 enable the urea solution and the flue gas to move in an S shape in the denitration tank 25 to be in full contact, the denitration effect is improved, and the urea solution is rapidly decomposed into NH after being sprayed₃And with NO in the flue gas_XReaction to produce N₂And H₂O, making discharged flue gas NO_XReach the standard, do not harm the production and life of environment and human, H that the dust in the flue gas was generated in the denitration process₂Flushing O to the lower part of the denitration tank 25, filtering dust by a filter screen 29, and filtering the H₂O enters the header tank 27 through the drain pipe 26 to facilitate its later reuse.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of the terms "a" or "an" and the like in the description and in the claims of this application do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

The exemplary embodiments of the present invention have been described in detail with reference to the preferred embodiments, however, it will be understood by those skilled in the art that various modifications and changes may be made to the specific embodiments without departing from the concept of the present invention, and various combinations of the technical features and structures of the present invention may be implemented without departing from the scope of the present invention.

Claims

1. The utility model provides a copper smelting furnace denitrification facility, includes copper smelting furnace and denitrating tank, its characterized in that: the device comprises a copper smelting furnace, a denitration tank, a urea dissolving tank, a urea storage tank and a cooling tank, wherein the upper part of the left side of the copper smelting furnace is connected with the lower part of the right side of the cooling tank through an air inlet pipe, an exhaust fan A is installed on the air inlet pipe, the inner walls of the left side and the right side of the cooling tank are fixedly connected with drainage plates, the middle part of the left side of the cooling tank is connected with an air pipe, the other end of the air pipe is connected with an air blower, a temperature sensor is installed on the left side of the inner wall of the upper side of the cooling tank, a display screen is installed on the upper part of the left side of the cooling tank and is electrically connected with the temperature sensor, the middle part of the upper side of the cooling tank is connected with the lower part of the right side of the denitration tank through an air pipe, an exhaust fan B is installed on the air pipe, a liquid discharge pipe is connected with the middle part of the lower surface of the denitration tank, a liquid discharge valve is installed on the liquid discharge pipe, a liquid collection tank is arranged below, and a filter screen is installed on the lower part in the denitration tank, the denitration device is characterized in that guide plates are fixedly connected to the inner walls of the left side and the right side of the denitration tank, the guide plates are positioned above the filter screen, a liquid distribution pipe is arranged at the upper part in the denitration tank, the left side and the right side of the upper surface of the liquid distribution pipe are connected with the inner wall of the upper side of the denitration tank through connecting rods, spray heads are uniformly arranged on the lower surface of the liquid distribution pipe, the spray heads are positioned above the guide plates, the middle part of the upper surface of the liquid distribution pipe is connected with the lower part of the right side of the urea storage tank through a liquid conveying pipe, a flow meter and a jet pump are arranged on the liquid conveying pipe, the flow meter is positioned on the right side of the jet pump, an exhaust pipe is connected to the upper part of the denitration tank, a driving motor B is arranged in the middle part of the upper surface of the urea storage tank, an output shaft of the driving motor B is connected with a stirring blade B, a steam inlet pipe is connected to the right side of the upper surface of the urea storage tank, and a steam inlet valve is arranged on the steam inlet pipe, urea holding vessel upper surface left side is passed through the conveyer pipe and is linked to each other with urea dissolving tank right side lower part, install the delivery pump on the conveyer pipe, urea dissolving tank upper surface mid-mounting has driving motor A, driving motor A's output shaft has (mixing) shaft A, fixedly connected with stirring vane A on the (mixing) shaft A, urea dissolving tank upper surface right side is connected with the charge door, urea dissolving tank upper surface left side is connected with the inlet tube, install the water intaking valve on the inlet tube.

2. The denitration device for the copper smelting furnace according to claim 1, characterized in that: the stirring shaft A is connected with the urea dissolving tank through a bearing.

3. The denitration device for the copper smelting furnace according to claim 1, characterized in that: and the stirring shaft B is connected with a urea storage tank through a bearing.

4. The denitration device for the copper smelting furnace according to claim 1, characterized in that: the height of the free end of the guide plate is lower than that of the fixed end of the guide plate.

5. The denitration device for the copper smelting furnace according to claim 1, characterized in that: the free end of the drainage plate is lower than the fixed end of the drainage plate.

6. The denitration device for the copper smelting furnace according to claim 1, characterized in that: and a sealing plug is plugged at the upper end of the charging opening.