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Low NOx fire tube boiler

A fire tube boiler and flame technology, applied in the field of low NOx fire tube boilers, can solve problems such as low heat output and air pollution

Active Publication Date: 2016-09-21
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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  • Low NOx fire tube boiler
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Examples

Experimental program
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Effect test

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 a 1 / 4" gap at all times around the damper. The stack size is about 12 square inches. The 1 / 4" gap 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". The over...

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Abstract

The invention discloses a fire tube boiler which includes a perforated flame holder configured to hold a combustion reaction that produces very low oxides of nitrogen (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 NOxFIRE TUBE BOILER" (Attorney Docket No. 2651-205-02 ); this application is a co-pending PCT patent application entitled "HORIZONTALLY FIRED 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 "FUEL COMBUSTION SYSTEM WITH A PERFORATED REACTION HOLDER," and Priority benefit is claimed from this patent application; this application is also filed on February 14, 2014 and is entitled "STARTUP METHODAND MECHANISM FOR A BURNER HAVING A PERFORATED FLAMEHOLDER" (STARTUP METHOD AND MECHANISM FOR A BURNER HAVING A PERFORATED FLAMEHOLDER Inst...

Claims

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Application Information

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Patent Type & Authority Applications(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
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