Double-stage direct-current dedusting heat exchange-free hot blast stove
阅读说明:本技术 一种双级直流除尘免换热热风炉 (Double-stage direct-current dedusting heat exchange-free hot blast stove ) 是由 梅丽中 于 2019-10-22 设计创作,主要内容包括:本发明公开了一种双级直流除尘免换热热风炉,包括燃烧炉、风机、送料绞龙和喂料斗,其特征在于:还包括一级直流除尘器、二级直流除尘器、除火星装置、热风罩和混风箱,在混风箱内还设置折流板,除火星装置通过压缩空气使火星破碎后完全燃烧。本发明相比现有技术具有以下优点:无换热器设计,热量利用效率高;双级直流除尘,压降小、成本低、除尘效率高;除火星装置促进火星完全燃烧,安全可靠,混风箱能够灵活调整热风温度,适应性好。(The invention discloses a two-stage direct-current dedusting heat exchange-free hot blast stove, which comprises a combustion furnace, a fan, a feeding auger and a feeding hopper, and is characterized in that: the dust remover also comprises a primary direct current dust remover, a secondary direct current dust remover, a spark removing device, a hot air cover and an air mixing box, wherein a baffle plate is also arranged in the air mixing box, and the spark removing device enables sparks to be completely combusted after being crushed by compressed air. Compared with the prior art, the invention has the following advantages: the design of no heat exchanger is adopted, and the heat utilization efficiency is high; the two-stage direct current dust removal has small pressure drop, low cost and high dust removal efficiency; the spark removing device promotes the spark to be completely combusted, and is safe and reliable, the air mixing box can flexibly adjust the temperature of hot air, and the adaptability is good.)
1. The utility model provides a doublestage direct current removes dust and exempts from heat transfer hot-blast furnace, includes fires burning furnace, fan, pay-off auger and feeding hopper, its characterized in that: the primary direct-current dust remover and the secondary direct-current dust remover are sequentially connected to a flue outlet of the combustion furnace in series, the primary direct-current dust remover is connected with the secondary direct-current dust remover through a U-shaped pipeline, the primary direct-current dust remover comprises a primary airflow rotation starting device, a primary conical air guide sleeve and a primary dust collecting sleeve, the primary airflow rotation starting device is arranged at the flue inlet of the combustion furnace, the primary conical air guide sleeve is in a hollow conical shape and is arranged in the primary dust collecting sleeve, the outlet of the flue penetrates through the side wall of the primary dust collecting sleeve and extends into the primary dust collecting sleeve, the top tip of the primary conical air guide sleeve faces the flue outlet, and the inlet of the U-shaped pipeline extends into the primary dust collecting sleeve from one side of the tail of the primary conical air guide sleeve; the secondary direct current dust collector comprises a secondary airflow rotation starting device, a secondary conical air guide sleeve and a secondary dust collection sleeve, the secondary airflow rotation starting device is arranged at the outlet of the U-shaped pipe, the outlet of the U-shaped pipe extends into the secondary dust collection sleeve, the secondary conical air guide sleeve is in a hollow conical shape and is arranged in the secondary dust collection sleeve, the top tip of the secondary conical air guide sleeve faces the outlet of the U-shaped pipe, a hot air pipe is arranged at the tail part of the secondary conical air guide sleeve, the inlet of the hot air pipe extends into the secondary dust collection sleeve and points to the tail part of the secondary conical air guide sleeve, and the outlet of the hot air pipe is connected with the fan.
2. The dual-stage direct-flow dedusting heat-exchange-free hot blast stove as claimed in claim 1, characterized in that: the top tips of the first-stage conical air guide sleeve and the second-stage conical air guide sleeve respectively extend into the flue outlet and the U-shaped pipe outlet, and the U-shaped pipe inlet and the hot air pipe inlet respectively extend into the tails of the first-stage conical air guide sleeve and the second-stage conical air guide sleeve.
3. The dual-stage direct-flow dedusting heat-exchange-free hot blast stove as claimed in claim 1, characterized in that: the double-stage direct-current dedusting heat-exchange-free hot blast stove further comprises a spark removing device, the spark removing device comprises an air compressor and a high-pressure spray head, the high-pressure spray head penetrates through the side wall of the flue and points to the center of the flue, and the high-pressure spray head is arranged in the middle section of the flue.
4. The dual-stage direct-flow dedusting heat-exchange-free hot blast stove as claimed in claim 3, characterized in that: the high-pressure spray head is a sand blasting gun head, an air pipe interface of the sand blasting gun head is connected with the air compressor, and a sand pipe interface of the sand blasting gun head is communicated with the bottom of the primary dust collecting sleeve or the secondary dust collecting sleeve.
5. The dual-stage direct-flow dedusting heat-exchange-free hot blast stove as claimed in claim 1, characterized in that: the top tip of the first-stage conical flow guide cover faces downwards, and an ash discharge pipe is arranged at the top tip of the first-stage conical flow guide cover and communicated with the bottom of the first-stage dust collection sleeve.
6. The dual-stage direct-flow dedusting heat-exchange-free hot blast stove as claimed in claim 1, characterized in that: the bottom of the primary dust collecting sleeve and/or the secondary dust collecting sleeve is obliquely arranged, and the lowest part of the bottom of the primary dust collecting sleeve and/or the secondary dust collecting sleeve is provided with an ash discharge passage communicated with an ash chamber of the combustion furnace.
7. The dual-stage direct-flow dedusting heat-exchange-free hot blast stove of claim 6, characterized in that: the outlet of the ash discharge channel is communicated with the ash chamber through an ash conveying auger. The ash content can be initiatively carried to the auger, can control the air current at both ends not circulate simultaneously to effectively prevent the short circuit of crossing wind.
8. The dual-stage direct-flow dedusting heat-exchange-free hot blast stove of claim 7, characterized in that: the ash chamber is provided with an ash discharge auger to discharge ash.
9. The dual-stage direct-flow dedusting heat-exchange-free hot blast stove as claimed in claim 1, characterized in that: the two-stage direct-current dust removal heat-exchange-free hot blast stove further comprises a hot air cover and an air mixing box, the combustion furnace, the primary direct-current dust remover, the secondary direct-current dust remover, the U-shaped pipe and the hot air pipe are all arranged in the hot air cover, the air mixing box is arranged between the fan and the outlet of the hot air pipe, an air inlet and an air outlet are arranged on the hot air cover, the air outlet and the outlet of the hot air pipe are all communicated with the air mixing box, a cold air inlet and an air mixing outlet are further arranged on the air mixing box, the air mixing outlet is connected with the inlet of the fan, and regulating valves are arranged on the air inlet, the air outlet, the outlet of the hot air pipe and the cold.
10. The dual-stage direct-flow dedusting heat-exchange-free hot blast stove of claim 9, characterized in that: the outlet of the hot air pipe, the air outlet and the cold air inlet are communicated with the bottom of the air mixing box, the air mixing outlet is arranged at the top of the air mixing box, and a baffle plate is arranged in the air mixing box.
Technical Field
The invention relates to the field of boiler dust removal, in particular to a double-stage direct-flow dust removal heat exchange-free hot blast stove.
Background
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a double-stage direct-current dedusting heat-exchange-free hot blast stove.
The invention is realized by the following technical scheme: the utility model provides a doublestage direct current removes dust and exempts from heat transfer hot-blast furnace, includes fires burning furnace, fan, pay-off auger and feeding hopper, its characterized in that: the device comprises a combustion furnace, a first-stage direct-current dust remover and a second-stage direct-current dust remover, wherein the first-stage direct-current dust remover and the second-stage direct-current dust remover are sequentially connected to a flue outlet of the combustion furnace in series; second grade direct current dust remover includes that the second grade air current starts to revolve the device, second grade toper kuppe and second grade collection dirt cover, the second grade air current starts to revolve the device and sets up in the export of U type pipe, the export of U type pipe stretches into in the second grade collection dirt cover, second grade toper kuppe is the cavity coniform and sets up in second grade collection dirt cover, the top point of second grade toper kuppe exports towards U type pipe, afterbody at second grade toper kuppe is provided with the hot-blast main, the entry of hot-blast main stretches into in the second grade collection dirt cover and the afterbody of directional second grade toper kuppe, the export.
As a further improvement of the scheme, the top tips of the primary conical air guide sleeve and the secondary conical air guide sleeve respectively extend into the flue outlet and the U-shaped pipe outlet, and the U-shaped pipe inlet and the hot air pipe inlet respectively extend into the tail parts of the primary conical air guide sleeve and the secondary conical air guide sleeve.
As a further improvement to the above scheme, the two-stage direct-current dust removal heat-exchange-free hot blast stove further comprises a spark removing device, the spark removing device comprises an air compressor and a high-pressure spray nozzle, the high-pressure spray nozzle penetrates through the side wall of the flue and points to the center of the flue, and the high-pressure spray nozzle is arranged in the middle section of the flue.
As a further improvement to the above scheme, the high-pressure spray head is a sand blasting gun head, an air pipe interface of the sand blasting gun head is connected with an air compressor, and a sand pipe interface of the sand blasting gun head is communicated with the bottom of the primary dust collecting sleeve or the secondary dust collecting sleeve.
As a further improvement to the scheme, the top tip of the primary conical air guide sleeve faces downwards, and an ash discharge pipe is arranged at the top tip of the primary conical air guide sleeve and communicated with the bottom of the primary dust collection sleeve.
As a further improvement of the proposal, the bottom of the primary dust collecting sleeve or the secondary dust collecting sleeve is obliquely arranged, and the lowest part of the bottom of the primary dust collecting sleeve or the secondary dust collecting sleeve is provided with an ash discharge passage communicated with an ash chamber of the combustion furnace.
As a further improvement to the scheme, the outlet of the ash discharge channel is communicated with the ash chamber through an ash conveying auger. The ash content can be initiatively carried to the auger, can control the air current at both ends not circulate simultaneously to effectively prevent the short circuit of crossing wind.
As a further improvement to the scheme, the ash chamber is provided with an ash discharging auger to discharge ash slag.
As a further improvement to the above scheme, the two-stage direct-current dust removal heat-exchange-free hot blast stove further comprises a hot air cover and an air mixing box, the combustion furnace, the first-stage direct-current dust remover, the second-stage direct-current dust remover, the U-shaped pipe and the hot air pipe are arranged in the hot air cover, the air mixing box is arranged between the fan and the outlet of the hot air pipe, an air inlet and an air outlet are arranged on the hot air cover, the outlets of the air outlet and the hot air pipe are communicated with the air mixing box, a cold air inlet and an air mixing outlet are further arranged on the air mixing box, the air mixing outlet is connected with the inlet of the fan, and regulating valves are arranged at the air inlet.
As a further improvement to the above scheme, the outlet of the hot air pipe, the air outlet and the cold air inlet are all communicated with the bottom of the air mixing box, the air mixing outlet is arranged at the top of the air mixing box, and the air mixing box is internally provided with a baffle plate.
Compared with the prior art, the invention has the following advantages: the design of no heat exchanger is adopted, and the heat utilization efficiency is high; the two-stage direct current dust removal has small pressure drop, low cost and high dust removal efficiency; the spark removing device promotes the spark to be completely combusted, and is safe and reliable, the air mixing box can flexibly adjust the temperature of hot air, and the adaptability is good.
Drawings
FIG. 1 is a diagram of the present invention.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
The utility model provides a doublestage direct current removes dust and exempts from heat transfer hot-blast furnace, includes
The top tips of the first-stage conical
The double-stage direct-current dedusting heat-exchange-free hot blast stove further comprises a spark removing device, the spark removing device comprises an
The high-
The top tip of the primary conical air guide sleeve 22 faces downwards, and an
The primary
The outlet of the ash discharge channel 343 is communicated with the
The
The two-stage direct-current dedusting heat-exchange-free hot blast stove further comprises a hot air cover 9 and an
The outlet of the
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
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