CN207179641U - A kind of boiler of the adherent wind of side wall - Google Patents
A kind of boiler of the adherent wind of side wall Download PDFInfo
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- CN207179641U CN207179641U CN201721073036.8U CN201721073036U CN207179641U CN 207179641 U CN207179641 U CN 207179641U CN 201721073036 U CN201721073036 U CN 201721073036U CN 207179641 U CN207179641 U CN 207179641U
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Abstract
The utility model discloses a kind of boiler of the adherent wind of side wall, belong to coal dust opposed firing boiler field, on the both walls water-cooling wall of boiler furnace, adherent wind perforate is provided with by bending water screen tube, adherent airduct is divided into two sections, back segment is connected with Secondary Air air supply device or heat primary air air supply device, leading portion is stretched into inside burner hearth by the adherent wind perforate, and leading portion uses more resistant to elevated temperatures alloy material with respect to back segment, adherent airduct is bending near water-cooling wall, and its export direction inside burner hearth is upward and is in 0~5 ° of angle with vertical direction.Air can be close to side wall wall by the application, more effectively improve the flue gas atmosphere of side wall near wall, prevent the high temperature corrosion of water-cooling wall near side wall so as to reach and can effectively mitigate the coking situation in the region.
Description
Technical field
The utility model belongs to coal dust opposed firing boiler field, and in particular to a kind of boiler of the adherent wind of side wall.
Background technology
In coal-fired power station boiler, because the coal dust stove that liquidates has the preferably ability of single burner tissue burning and answered
With extensive, however as application of the low NOx technologies in the stove that liquidates, there is benefit always in middle part water cooling wall region for boiler side wall
The problem of wind difficulty.Various methods are employed to improve the air feed problem in the region in order to tackle many companies of this problem.When
The solution method of preceding main flow is that adherent wind is set up in the region close to side wall on front-back wall, yet with temperature in stove compared with high gas flow
Spread quickly, the improvement to flue gas atmosphere near side wall helps limited.The researchers of Ye You Harbin Institute of Technology proposed
The scheme of " preventing water wall high temperature corrosion and the boiler plant of the burner wall of slagging arrangement ", they propose to add on side wall
Adherent wind is filled, simply this method is only cracked gap on side wall, and adherent wind enters burner hearth, can not ensure air-flow energy in horizontal direction
Enough it is close to side wall wall protection side water wall.
Utility model content
The purpose of this utility model is：The coal dust of the existing coal-fired power station boiler stove that liquidates exists in actual moving process
The problems such as side wall high temperature corrosion and coking, many boilers employ adherent wind this technology to solve this problem.But tradition patch
The position of wall wind generally with burner on same face wall be front-back wall on.This adherent wind being arranged on front-back wall exists
Performance in existing station boiler is unsatisfactory, and the high temperature corrosion and coking problem on boiler side wall still have.In order to more preferable
Ground solves high temperature corrosion and coking problem present on side wall, and air can be close to side wall wall, more effectively change by the application
The flue gas atmosphere of kind side wall near wall, prevent the high temperature corrosion of water-cooling wall near side wall so as to reach and can effectively mitigate the area
The coking situation in domain.
The purpose of this utility model is realized by following technical proposals：
A kind of boiler of the adherent wind of side wall, on the both walls water-cooling wall of boiler furnace, is provided with by bending water screen tube
Adherent wind perforate, adherent airduct are divided into two sections, and back segment is connected with Secondary Air air supply device or heat primary air air supply device, and leading portion leads to
The adherent wind perforate is crossed to stretch into inside burner hearth, and leading portion uses more resistant to elevated temperatures alloy material with respect to back segment, adherent airduct is in water
Cold wall is nearby bending, and its export direction inside burner hearth is upwards and is in 0~5 ° of angle with vertical direction.
In the application, the method for arranging is arranged for tubular type, and adherent wind perforate and then access are formed by bending water screen tube
Adherent airduct, arranged different from the fissure type of the perforate only on water-cooling wall.The arrangement that this programme proposes stretches adherent airduct
Enter burner hearth and make adherent wind snout position vertical (or close to vertically) upwards.Air can be close to side walls by this arrangement form
Face, more effectively improve the flue gas atmosphere of side wall near wall, prevent the high temperature corrosion of water-cooling wall near side wall simultaneously so as to reach
The coking situation in the region can effectively be mitigated.Meanwhile the adherent airduct stretched into inside burner hearth is scorched by high temperature gas flow, condition is disliked
It is bad, high temperature resistant material need to be used.Therefore the adherent airduct of the application is divided into two sections, with Secondary Air air supply device or heat primary air air feed
The connected part of device use common material, the resistant to elevated temperatures alloy material in the part of close wind tube outlet.
Alternatively, lateral wall arranges that adherent wind perforate is a row or multi-row, 3 to 8 perforates of often row's setting, and both walls are symmetrical
Arrangement.
Alternatively, wall is provided with burner nozzle and fire air nozzle, adherent wind perforate before or after boiler furnace
Vertical height be located at bottom burner nozzle between fire air nozzle.
The foregoing main scheme of the utility model and its each further selection scheme can be with independent assortments to form multiple schemes,
The scheme that can be used and be claimed for the utility model；And the utility model, (each non conflicting selection) selection between and
Can also independent assortment between other selections.Those skilled in the art are after the present invention program is understood according to prior art and public affairs
Know that general knowledge can understand there are multiple combinations, be the claimed technical scheme of the utility model, do not do exhaustion herein.
The beneficial effects of the utility model：Adherent wind can be sent into exactly by burner hearth side using the arrangement form of the application
Wall medium position, it can will effectively alleviate the high temperature corrosion of side water wall and significantly mitigate the coking situation of the areas adjacent, carry
Rise the global reliability and economy of station boiler.
Brief description of the drawings
Fig. 1 is the structural representation of the adherent airduct arrangement form of the utility model embodiment；
Fig. 2 is the structural representation of the adherent wind hole shape of the utility model embodiment；
Fig. 3 is the adherent airduct alloy section side view of the utility model embodiment；
In figure, 1 is burner hearth, and 2 be wall after boiler, and 3 be adherent airduct, and 4 be boiler side wall, and 5 be boiler front wall, and 6 be burning
Device spout, 7 be fire air nozzle, and 8 be adherent wind perforate, and 9 be side water wall, and 10 be that adherent airduct alloy section exports, and 11 are
Airduct side face, 12 be adherent airduct alloy section entrance.
Embodiment
The utility model is further described with reference to specific embodiments and the drawings.
With reference to shown in figure 1, a kind of boiler of the adherent wind of new side wall.Opposed firing boiler burner hearth 1 is made up of four sides wall, per face
Wall is made up of the fin of water screen tube and connection water screen tube, is wherein disposed with opposed firing device on boiler front-back wall 2,5.Such as figure
1 is burner hearth shown in 1, and 2 be wall after boiler, and 3 be adherent airduct, and 4 be boiler side wall, and 5 be boiler front wall, and 6 be burner nozzle, 7
For fire air nozzle, the adherent position of wind perforate 8 is located on the water-cooling wall of two boiler side wall 4, reaches perforate by bending water screen tube
Purpose.The shape of adherent wind perforate 8 is as shown in Fig. 2 be approximately drop shape.The vertical height of adherent wind perforate 8 is positioned at most
The appropriate height that bottom burner nozzle 6 is arrived between fire air nozzle 7, lateral wall arrangement is a row or multi-row, and often row sets 3 to 8
Individual adherent wind perforate 8, both walls are arranged symmetrically.Adherent airduct 3 is divided to for two sections, and back segment is connected with air supply device, and leading portion passes through this
Adherent wind perforate 8 is stretched into inside burner hearth.Adherent airduct 3 is bending near water-cooling wall, and its export direction is upwards and with erecting
Nogata is in 0~5 ° of angle.The adherent airduct 3 stretched into inside burner hearth 1 is scorched by high temperature gas flow, inclement condition, need to use resistance to height
The specific alloy material of temperature.Therefore adherent airduct 3 can be divided into two sections, and the back segment being connected with air supply device can use common material
Matter, the leading portion close to wind tube outlet are as shown in Figure 3 with resistant to elevated temperatures alloy material, alloy segment structure.Adherent wind is from secondary
Wind or heat primary air, air force account for the 1%-5% of total blast volume, wind speed size 30-60m/s, each adherent wind of airduct 3 of lateral wall
Speed can evenly distribute, can also differentiation air distribution be among wind speed high both sides wind speed it is low.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (3)
- A kind of 1. boiler of the adherent wind of side wall, it is characterised in that：On the both walls water-cooling wall of boiler furnace, by bending water cooling Wall pipe is provided with adherent wind perforate, and adherent airduct is divided into two sections, and back segment connects with Secondary Air air supply device or heat primary air air supply device Connect, leading portion is stretched into inside burner hearth by the adherent wind perforate, and leading portion uses more resistant to elevated temperatures alloy material with respect to back segment, adherent Airduct is bending near water-cooling wall, and its export direction inside burner hearth is upward and is in 0~5 ° of angle with vertical direction.
- 2. the boiler of the adherent wind of side wall as claimed in claim 1, it is characterised in that：Lateral wall arrange the adherent row of wind perforate one or Multiple rows of, often row sets 3 to 8 perforates, and both walls are arranged symmetrically.
- 3. the boiler of the adherent wind of side wall as claimed in claim 1, it is characterised in that：Wall is set before or after boiler furnace There are burner nozzle and fire air nozzle, the vertical height of adherent wind perforate is located at bottom burner nozzle to fire air nozzle Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721073036.8U CN207179641U (en) | 2017-08-25 | 2017-08-25 | A kind of boiler of the adherent wind of side wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721073036.8U CN207179641U (en) | 2017-08-25 | 2017-08-25 | A kind of boiler of the adherent wind of side wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207179641U true CN207179641U (en) | 2018-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721073036.8U Active CN207179641U (en) | 2017-08-25 | 2017-08-25 | A kind of boiler of the adherent wind of side wall |
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| Country | Link |
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| CN (1) | CN207179641U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114588A (en) * | 2018-08-31 | 2019-01-01 | 华北水利水电大学 | It is pure to fire high-alkali coal wet bottom boiler low NOx combustion system and method for controlling combustion |
| CN111121003A (en) * | 2018-11-01 | 2020-05-08 | 中国科学院工程热物理研究所 | Burner bottom-mounted pulverized coal fired boiler with wall-attached air and control method thereof |
| CN111256111A (en) * | 2020-03-30 | 2020-06-09 | 西安热工研究院有限公司 | Efficient wall-attached air system and method for preventing water-cooled wall from high-temperature corrosion of front-wall and rear-wall opposed combustion boiler |
| CN113654056A (en) * | 2021-07-27 | 2021-11-16 | 安徽斯的得电力工程有限公司 | Burn burning furnace and make burnt system on line |
-
2017
- 2017-08-25 CN CN201721073036.8U patent/CN207179641U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114588A (en) * | 2018-08-31 | 2019-01-01 | 华北水利水电大学 | It is pure to fire high-alkali coal wet bottom boiler low NOx combustion system and method for controlling combustion |
| CN111121003A (en) * | 2018-11-01 | 2020-05-08 | 中国科学院工程热物理研究所 | Burner bottom-mounted pulverized coal fired boiler with wall-attached air and control method thereof |
| CN111256111A (en) * | 2020-03-30 | 2020-06-09 | 西安热工研究院有限公司 | Efficient wall-attached air system and method for preventing water-cooled wall from high-temperature corrosion of front-wall and rear-wall opposed combustion boiler |
| CN113654056A (en) * | 2021-07-27 | 2021-11-16 | 安徽斯的得电力工程有限公司 | Burn burning furnace and make burnt system on line |
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