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Hot-blast stove and drying system

A technology of drying system and hot blast stove, which is applied in drying, drying machine, air heater, etc. It can solve the problems of unsatisfactory drying effect, waste of energy, high construction cost, etc., and achieve simple and fast equipment installation and save auxiliary equipment The area and the effect of burning fully and completely

Pending Publication Date: 2019-06-18
JILIN DANDELION ELECTROMECHANICAL INSTALLATION ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Brick-concrete hot blast stoves take up a lot of space, have a long construction period, high construction costs, and are difficult to construct in low-temperature environments and delay the drying period.
The thermal efficiency of brick-concrete hot blast stoves is low, usually below 70%; most of the dryer process waste gas is discharged freely, without recycling functions to pollute the atmospheric environment and waste energy; some hot blast stoves and ovens with recycling devices appearing in the market Most of the dryers are simple in structure, the drying effect is not ideal, and it is difficult to maintain and overhaul

Method used

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  • Hot-blast stove and drying system
  • Hot-blast stove and drying system
  • Hot-blast stove and drying system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see figure 2 , 5 , 6. In an embodiment of the present invention, a hot blast stove includes a furnace body. The top and both sides of the furnace body are provided with fin-shaped tube air-cooled heat-exchange walls 102, and the fin-shaped tube air-cooled heat-exchange walls 102 are respectively The low-temperature exhaust gas channel distribution cavity 101 connected to the two ends of the furnace body and the bridge heat exchanger incoming air channel distribution cavity 107 are connected, and the low-temperature exhaust gas channel distribution cavity 101 and the bridge heat exchanger incoming air channel distribution cavity 107 are connected to the furnace combustion in the furnace body. Chamber 108, the lower end of the furnace body is provided with a fire grate 14, one side of the fire grate 14 is provided with a coal loading machine 15 for feeding materials, and the fire grate 14 is provided with a number of feeders connected to the waste gas pipeline of the low...

Embodiment 2

[0036] see Figure 1~4 , on the basis of Embodiment 1, the present application proposes a drying system, which includes the above-mentioned hot blast furnace, bridge heat exchanger 2, air heat exchanger 3 and dryer 4, the drying There are three paths in the system, namely:

[0037] 1. Exhaust gas from the low-temperature section of the dryer → hot blast stove (participating in combustion and heat exchange) → high-temperature hot air → high-temperature section of the dryer (pre-drying or thawing grain);

[0038] 2. Exhaust gas from the cooling section of the dryer → cross-bridge heat exchanger (participating in heat exchange) → hot blast stove (participating in heat exchange and air mixing) → high-temperature hot air → high-temperature section of the dryer (pre-drying or thawing grain);

[0039] 3. Natural air + exhaust gas from the cooling section of the dryer → air heat exchanger (participating in heat exchange) → low-temperature hot air → low-temperature section of the drye...

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Abstract

The invention discloses a hot-blast stove and a drying system in the technical field of drying equipment. The hot-blast stove comprises a stove body; finned tube air cooling heat exchange walls are arranged at the top and on two sides of the stove body; the finned tube air cooling heat exchange walls communicate a low-temperature waste gas channel distribution cavity and a bridge crossing heat exchanger air coming channel distribution cavity at two ends of the stove body; a fire grate is arranged at the lower end of the stove body, and is provided with multiple air feeding inlets connected with a dryer low-temperature section waste gas pipeline; a finned tube double-layer stove arch heat exchanger and front and back arch structures are arranged in a combustion chamber in the stove; due tooptimized stove cavity and arch application, the steel hot-blast stove provides more reasonable effective combustion space to fuels, so that the combustion is more sufficient and thorough; due to a heat exchange function with waste gas afterheat recycling, the novel hot-blast stove saves more energy (heat efficiency is above 80%); and dust in waste gas is recovered without being randomly discharged, so that the hot-blast stove achieves higher environmental protection.

Description

technical field [0001] The invention relates to the technical field of drying equipment, in particular to a hot blast stove and a drying system. Background technique [0002] Today, the main energy used in my country's grain drying field is still traditional energy such as fossil fuels. According to relevant statistics, my country needs to dry 90 million tons of grain every year, and it is growing at an annual growth rate of 10%. It takes 0.055 tons of coal to dry one ton of corn, and 4.95 million tons of coal to dry 90 million tons of corn. Moreover, the grain dust in the atmosphere discharged from the drying tower seriously affects the surrounding environment. The existing hot blast stoves in the grain drying market have low efficiency and high coal consumption. [0003] At present, 90% of the hot blast stoves are brick-concrete hot blast stoves. Brick-concrete hot blast stoves take up a lot of space, have a long construction period, high construction costs, and are dif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H3/08F24H9/00F24H9/18F26B21/00F26B25/00A23B9/08
CPCY02P60/85
Inventor 李海龙刘辉刘云笑宋书堂谭信冬刘佳文戴国彬赵泉洋王行胡哲铭孙博
Owner JILIN DANDELION ELECTROMECHANICAL INSTALLATION ENG CO LTD