CN212806066U - Small-size intensification hot-blast furnace suitable for denitration of admittedly giving up - Google Patents
Small-size intensification hot-blast furnace suitable for denitration of admittedly giving up Download PDFInfo
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- CN212806066U CN212806066U CN202021612183.XU CN202021612183U CN212806066U CN 212806066 U CN212806066 U CN 212806066U CN 202021612183 U CN202021612183 U CN 202021612183U CN 212806066 U CN212806066 U CN 212806066U
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Abstract
The utility model discloses a small-size intensification hot-blast furnace suitable for denitration of admittedly giving up, include: the furnace body is provided with a main air channel communicated with the interior of the furnace body, and the air inlet volume of the main air channel is adjustable; the main air channel comprises a main air inlet pipe communicated with an external air source and a plurality of sub air inlet pipes communicated with the main air inlet pipe, and all the sub air inletsThe air pipes are radially distributed along the circumferential direction of the furnace body, one end of the sub air inlet pipe is communicated with the interior of the furnace body, and the other end of the sub air inlet pipe is communicated with the main air inlet pipe; the nozzle end of the burner extends into the furnace body; and an ignition gun which can advance and retreat and extend into the furnace body. The utility model discloses a sufficient burning of fuel can also be guaranteed as far as possible in the time that the hot-blast furnace can guarantee the intensification requirement, guarantees that total exhanst gas outlet CO concentration < 30mg/Nm3。
Description
Technical Field
The utility model relates to a hot-blast furnace field. More specifically, the utility model relates to a small-size intensification hot-blast furnace suitable for solid useless denitration.
Background
The flue gas heating mode on the market mainly has 3 forms: 1. the hot-blast furnace form, whole flue that waits to heat inserts the entry of hot-blast furnace, through the hot-blast furnace heating back, exit linkage flue, and the hot-blast furnace is just as a part of flue, because the flue gas volume is great usually, therefore the hot-blast furnace of this kind of form structure is huge, and the cost is high, and the operation maintenance cost is also very high, and the thermal efficiency is than lower in addition. Have gradually exited the market. 2. The concentric coaxial direct-fired hybrid type burner has the advantages that the flame is surrounded by low-temperature flue gas, the most direct heating is realized, the heat loss is very small, but the form easily causes incomplete combustion. 3. The radial combustion is directly mixed, the central line of the combustor is vertical to the center of the flue, the combustor is provided with a heat storage combustion chamber, fuel generates high-temperature flue gas after being combusted in the combustion chamber, the high-temperature flue gas and the low-temperature flue gas are mixed to realize a heating function, and the form is mainly applied to the flue with a large size and is not suitable for the flue with a small size.
Therefore, the hot blast stove with high combustion efficiency, small volume and simple structure is urgently needed to be developed.
SUMMERY OF THE UTILITY MODEL
In order to realize according to the utility model discloses these objects and other advantages, a small-size intensification hot-blast furnace suitable for admittedly useless denitration is provided, include:
the furnace body is provided with a main air channel communicated with the interior of the furnace body, and the air inlet volume of the main air channel is adjustable; the main air channel comprises a main air inlet pipe communicated with an external air source and a plurality of sub air inlet pipes communicated with the main air inlet pipe, all the sub air inlet pipes are radially distributed along the circumferential direction of the furnace body, one end of each sub air inlet pipe is communicated with the inside of the furnace body, and the other end of each sub air inlet pipe is communicated with the main air inlet pipe;
the nozzle end of the burner extends into the furnace body;
and the ignition gun can advance and retreat and extends into the furnace body.
According to the utility model discloses a preferred embodiment, be applicable to the small-size intensification hot-blast furnace of solid useless denitration, the saddle is installed to the furnace body bottom.
According to the utility model discloses a preferred embodiment, be applicable to the small-size intensification hot-blast furnace of solid useless denitration, the burning torch realizes stretching into of advancing and retreating under advancing device's promotion in the furnace body.
According to the utility model discloses a preferred embodiment, be applicable to the small-size intensification hot-blast furnace of solid useless denitration, set up the fire observation hole on the furnace body.
According to the utility model discloses a preferred embodiment, be applicable to the small-size intensification hot-blast furnace of solid useless denitration, the combustion-supporting wind passageway of combustor intercommunication.
According to the utility model discloses a preferred embodiment, be applicable to the small-size intensification hot-blast furnace of solid useless denitration, the export and the flue intercommunication of furnace body.
According to the utility model discloses a preferred embodiment, be applicable to the small-size intensification hot-blast furnace of solid useless denitration, the attached heat preservation that sets up of furnace body inner wall.
According to the utility model discloses a preferred embodiment, be applicable to the small-size intensification hot-blast furnace of solid useless denitration, main air-supply line include first pipeline and cladding at the outside curved second pipeline of furnace body, first pipeline communicate in the second pipeline, first pipeline communicate in outside wind regime, the second pipeline communicate in sub-air-supply line.
According to the utility model discloses a preferred embodiment, small-size intensification hot-blast furnace suitable for solid useless denitration, still include the flame detector, its sense terminal stretches into in the furnace body.
The utility model discloses at least, include following beneficial effect: the hot blast stove of the utility model has simple structure, small volume and high combustion efficiency, and not onlyCan ensure the full combustion of the fuel as far as possible while ensuring the temperature rise requirement, and ensure that the CO concentration of the total flue gas outlet is less than 30mg/Nm3。
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural diagram of a small-sized heating hot blast stove suitable for solid waste denitration in a preferred embodiment of the present invention.
Fig. 2 is the cross-sectional schematic view of the small-size intensification hot-blast furnace suitable for solid useless denitration in the above-mentioned embodiment of the utility model.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
As shown in fig. 1-2, the utility model discloses a small-size intensification hot-blast furnace suitable for solid useless denitration, include:
the furnace body 1 is provided with a main air channel communicated with the interior of the furnace body, and the air inlet quantity of the main air channel is adjustable; the main air channel comprises a main air inlet pipe 220 communicated with an external air source and a plurality of sub air inlet pipes 210 communicated with the main air inlet pipe, all the sub air inlet pipes are radially distributed along the circumferential direction of the furnace body, one end of each sub air inlet pipe 210 is communicated with the inside of the furnace body 1, and the other end of each sub air inlet pipe is communicated with the main air inlet pipe 220; the main air inlet pipe 220 includes a first pipe 221 and an arc-shaped second pipe 222 covering the outside of the furnace body 1, the first pipe 221 is communicated with the second pipe 222, the first pipe 221 is communicated with an external air source, and the second pipe 222 is communicated with the sub air inlet pipe 210. The air inlet quantity of the main air channel is adjusted by adjusting the opening degree of the air door 13 of the main air inlet pipe 220.
An ignition gun 4 which can advance and retreat and is extended into the furnace body 1; the ignition gun 4 can advance and retreat into the furnace body 1 under the pushing of the propelling device 7.
The nozzle end of the burner 5 extends into the furnace body 1, and an air gun 3 for fuel to enter is arranged in the burner 5; the thermocouple 12 extends into the furnace body 1. The outlet of the furnace body 1 is communicated with the flue.
In the above embodiment, fuel enters from the air gun 3, and is diffused and mixed with swirling combustion-supporting air at the nozzle of the burner 5, the ignition gun 4 is pushed and ignited by the propelling device 7, after ignition is successful, the propelling device 7 withdraws the ignition gun 4, after the burner 5 operates stably, the temperature in the furnace rises rapidly, at this time, the opening degree of the mixed air is continuously adjusted through component detection feedback at the tail of the flue and numerical feedback of the thermocouple 12 until balance is achieved, and after balance, the hot blast stove can meet the temperature rise requirement and can control the release amount of CO to be zero, that is, complete combustion is achieved. Wherein the combustion-supporting air of the burner 5 is taken from a combustion-supporting fan, and the medium is normal-temperature air. The mixed air is also taken from the fan, and the medium is normal-temperature air. The main air channel comprises a main air inlet pipe 220 communicated with an external air source and a plurality of sub air inlet pipes 210 communicated with the main air inlet pipe 220, and the main air inlet pipe 220 comprises a first pipeline 221 and an arc-shaped second pipeline 222 coated outside the furnace body 1, so that air can be well ensured to uniformly enter the furnace body 1 to form cyclone air, and further, sufficient combustion is ensured; the opening position of the sub-air inlet pipe 210 can be determined according to the size of the flame, which is beneficial to the temperature control.
Firstly, the heat exchange quantity, namely the temperature of the flue gas at the outlet of the hot blast stove and the fuel quantity required by the heat exchange energy is calculated according to the temperature rise requirement of the flue gas to be heated, and the fuel quantity can be calculated according to the heat value of the fuel. Secondly, calculating the air quantity entering through the main air channel and meeting the outlet temperature requirement, and finally calculating the flow velocity of the flue gas in the furnace through the combustion speed of the fuel, so as to ensure that the flue gas stays for a short time and just can be completely combusted. The outlet of the hot blast stove is connected with the flue, which is different from the 1 st hot blast stove in the background art, only a small hole is needed to be arranged on the flue, and the high-temperature flue gas in the stove is mixed with the flue gas after coming out, so the hot blast stove is suitable for the flue with smaller size.
According to the difference of fuels, the combustion temperature in the furnace is different, and the whole size of the furnace is not large, so that the heat-insulating layer and the high-temperature-resistant castable layer in the furnace can be constructed in a factory, baked and delivered out of a factory and integrally supplied. The time of site operation is greatly reduced, and manpower and material resources are saved. Because the primary baking is carried out in the factory, the field can be directly put into operation, and the starting time is saved.
According to the utility model discloses a preferred embodiment, be applicable to the small-size intensification hot-blast furnace of solid useless denitration, saddle 6 is installed to the furnace body bottom.
According to the utility model discloses a preferred embodiment, be applicable to the small-size intensification hot-blast furnace of solid useless denitration, set up on the furnace body and see fire hole 8, observe 1 inside condition of furnace body in the facilitate the use.
According to the utility model discloses a preferred embodiment, be applicable to the small-size intensification hot-blast furnace of solid useless denitration, combustor intercommunication combustion-supporting wind passageway 9 does combustor 5 provides combustion-supporting wind.
According to the utility model discloses a preferred embodiment, be applicable to the small-size intensification hot-blast furnace of solid useless denitration, the attached heat preservation 10 that sets up of furnace body inner wall.
According to the utility model discloses a preferred embodiment, small-size intensification hot-blast furnace suitable for denitration admittedly useless, still include flame detector 11, its sense terminal stretches into in the furnace body 1.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (8)
1. The utility model provides a small-size intensification hot-blast furnace suitable for denitration of admittedly giving up which characterized in that includes:
the furnace body is provided with a main air channel communicated with the interior of the furnace body, and the air inlet volume of the main air channel is adjustable; the main air channel comprises a main air inlet pipe communicated with an external air source and a plurality of sub air inlet pipes communicated with the main air inlet pipe, all the sub air inlet pipes are radially distributed along the circumferential direction of the furnace body, one end of each sub air inlet pipe is communicated with the inside of the furnace body, and the other end of each sub air inlet pipe is communicated with the main air inlet pipe;
the nozzle end of the burner extends into the furnace body; and
and the ignition gun can advance and retreat and extends into the furnace body.
2. The small-sized heating hot blast stove suitable for solid waste denitration according to claim 1, wherein a saddle is installed at the bottom of the stove body.
3. The small-sized heating hot blast stove suitable for denitration of solid waste of claim 1, wherein the ignition gun can be advanced and retreated into the stove body under the pushing of a propelling device.
4. The small-sized heating hot blast stove suitable for solid waste denitration of claim 1, wherein the stove body is provided with a fire observation hole.
5. The small-sized heating hot blast stove suitable for solid waste denitration of claim 1, wherein the burner is communicated with a combustion air channel.
6. The small-sized heating hot blast stove suitable for solid waste denitration of claim 1, wherein the inner wall of the stove body is attached with a heat preservation layer.
7. The small-sized temperature-rising hot blast stove suitable for solid waste denitration of claim 1, wherein the main air inlet pipe comprises a first pipeline and an arc-shaped second pipeline coated outside the stove body, the first pipeline is communicated with an external air source, the first pipeline is communicated with the second pipeline, and the second pipeline is communicated with the sub air inlet pipe.
8. The small-sized heating hot blast stove suitable for solid waste denitration of claim 1, further comprising a flame detector, wherein a detection end of the flame detector extends into the stove body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021612183.XU CN212806066U (en) | 2020-08-06 | 2020-08-06 | Small-size intensification hot-blast furnace suitable for denitration of admittedly giving up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021612183.XU CN212806066U (en) | 2020-08-06 | 2020-08-06 | Small-size intensification hot-blast furnace suitable for denitration of admittedly giving up |
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| Publication Number | Publication Date |
|---|---|
| CN212806066U true CN212806066U (en) | 2021-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021612183.XU Active CN212806066U (en) | 2020-08-06 | 2020-08-06 | Small-size intensification hot-blast furnace suitable for denitration of admittedly giving up |
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| CN (1) | CN212806066U (en) |
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2020
- 2020-08-06 CN CN202021612183.XU patent/CN212806066U/en active Active
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A small heating hot blast stove suitable for solid waste denitrification Effective date of registration: 20220913 Granted publication date: 20210326 Pledgee: Wuhan area branch of Hubei pilot free trade zone of Bank of China Ltd. Pledgor: WUHAN MINGZHENG POWER ENGINEERING Co.,Ltd. Registration number: Y2022420000292 |