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low no x fire tube boiler

A technology of fire tube boilers and combustion tubes, which is applied in the direction of burners, combustion types, water heaters, etc., and can solve problems such as low heat output and air pollution

Active Publication Date: 2019-11-12
美一蓝技术公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] While most fire tube boilers (such as package boilers) have a relatively low heat output compared to the range of industrial burners, and thus can be used alone as a source of relatively clean hot water or steam 132, they are relatively clean when installed. With higher numbers of installations, they can collectively be a significant source of air pollution

Method used

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Examples

Experimental program
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example

[0114] Figure 10 Is a schematic diagram of an experimental setup 1000 for determining the effect of dilution distance between a fuel nozzle and a perforated flame holder according to one embodiment. In this experimental setup, the test ignition was carried out using the following conditions:

[0115] The fuel is methane.

[0116] Fuel pressure varied, but was about 12 psig flux.

[0117] The fuel nozzle (pinhole) diameter is 0.11".

[0118] "Close" the damper in the exhaust stack with about 1 / 4" clearance at all times around the damper. The stack size is about 12 square inches. The 1 / 4" clearance keeps the exhaust stack damper from closing completely.

[0119] The air source (intake air) is natural draft and confined in a 3" hole concentrically positioned with the fuel nozzle tube covering approximately the center 1 / 4" of the 3" hole.

[0120] 3% O in the stack 2 The NOx comparison below.

[0121] The overall thickness (L dimension) of the perforated flame holder was 4"...

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Abstract

A fire tube boiler is disclosed that includes a perforated flame holder configured to maintain a combustion reaction that produces very low nitrogen oxides (NOx).

Description

[0001] Cross references to related patent applications [0002] This application claims co-pending U.S. Provisional Patent Application No. 61 / 931,407, filed January 24, 2014, entitled "LOW NOx FIRE TUBEBOILER" (Attorney Docket No. 2651-205-02 ); this application is a co-pending PCT patent application entitled "HORIZONTALLYFIRED BURNER WITH A PERFORATED FLAME HOLDER" filed September 23, 2014 Continuation-in-Part of No. PCT / US2014 / 057075 (Attorney Docket No. 2651-197-04) and claiming the benefit of priority to that patent application; Continuation-in-Part of PCT Patent Application No. PCT / US2014 / 016632 (Attorney Docket No. 2651-188-04) for "FUELCOMBUSTION SYSTEM WITH A PERFORATED REACTION HOLDER," and Priority benefit is claimed from this patent application; this application is also filed on February 14, 2014, entitled "STARTUP METHOD AND MECHANISM FOR A BURNER HAVING A PERFORATED FLAME HOLDER" (STARTUP METHOD AND MECHANISM FOR A BURNER HAVING A PERFORATED FLAME HOLDER and the A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24H1/24F23D14/26
CPCF23C2203/20F23M9/06F24H1/205F24H1/26F24H1/285F24H9/0015F24H9/0026F24H9/1836F23D14/145
Inventor 道格拉斯·W·卡尔科夫约瑟夫·科兰尼诺伊戈·A·克里克塔弗维奇罗伯特·E·布赖登塔尔克里斯多佛·A·威克洛夫
Owner 美一蓝技术公司