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    Nox suppression three-step burning method
    152.
    发明专利
    Nox suppression three-step burning method 失效
    NOX抑制三步法

    公开(公告)号：JPS58187712A

    公开(公告)日：1983-11-02

    申请号：JP7214282

    申请日：1982-04-27

    Applicant: Hitachi Zosen Corp

    Inventor： SEKIGUCHI YOSHITOSHI ,  SASAKI KUNIO ,  YAMAZAKI KATSUHIKO ,  SHITAYA HIDEO

    IPC: F23C99/00 ,  F23C6/04

    CPC classification number: F23C6/047 ,  F23C2201/101

    Abstract: PURPOSE:To make it possible to suppress the quantity of soot and dust particularly in the case of using a heavy fuel in a high-load furnace or a small- size furnace by using an emulsified fuel as a secondary fuel. CONSTITUTION:Upon carrying out three-step combustion by successively disposing a primary burner 12, a secondary fuel nozzle 13 and a secondary air nozzle 14 on the rear stream side, an emulsified fuel prepared by mixing and agitating a fuel F and hot water W with each other by a mixer 22 as a fuel supplied to the secondary fuel nozzle 13, is used. Accordingly, the relation between the emulsification ratio of the secondary fuel and the quantity of soots and dirts generated upon the actual burning operation lies in that, as compared with the case where the entire fuel is emulsified, the increase in the heat loss can be suppressed, and a great suppression of the quantity of soot and dust generated becomes possible.

    Abstract translation: 目的：为了能够通过使用乳化燃料作为二次燃料，特别是在高负荷炉或小型炉中使用重质燃料的情况下，可以抑制煤烟尘埃的量。 构成：通过在后排侧依次配置主燃烧器12，二次燃料喷嘴13和二次空气喷嘴14进行三步燃烧，将通过将燃料F和热水W混合并搅拌而制备的乳化燃料 使用作为供给二次燃料喷嘴13的燃料的混合器22。 因此，二次燃料的乳化率与实际燃烧作业产生的烟尘量之间的关系在于，与全部燃料乳化的情况相比，能够抑制热损失的增加 ，并且可以极大地抑制所产生的烟灰和尘埃的数量。

    Gasifying combustion of pulverized coal
    153.
    发明专利
    Gasifying combustion of pulverized coal 失效
    燃烧煤的燃烧

    公开(公告)号：JPS58179710A

    公开(公告)日：1983-10-21

    申请号：JP6175982

    申请日：1982-04-15

    Applicant: Ishikawajima Harima Heavy Ind Co Ltd

    Inventor： TSUJI SHIYOUICHI

    IPC: F23C99/00 ,  F23C6/04 ,  F23D1/00

    CPC classification number: F23C6/047 ,  F23C2201/101 ,  F23L2900/07005 ,  Y02E20/344

    Abstract: PURPOSE:To decrease the exhausting rates of generated NOX and smoke dust by producing reducing gas by gasifying pulverized coal, by feeding the air for primary combustion, which has a specified air ratio and is preheated higher than the specified temperature or is oxygen-enriched, into a combustion chamber together with water content and pulverized coal. CONSTITUTION:At the time of combustion, first, mixture of pulverized coal and water content is fed into the primary combustion chamber 2a from fuel feed pipes 5. At the same time, the air for primary combustion, which has the air ratio of 0.7-0.95 and is preheated higher than 400 deg.C or is enriched with oxygen, is fed into the primary combustion chamber 2a, from the primary combustion air feed pipes 6. Then, fuel is burned, with pulverized coal being gasified. By this method, pulverized coal is promoted to be gasified into reducing gas, and the concentration of CO and H2 is increased in a reducing chamber 2b to increase the reducing rate of NOX. Next, the gas is fed into the secondary combustion chamber 2c which is formed above the reducing chamber 2b, and unreacted reducing gas is burned in the chamber 2c by feeding the air for secondary combustion from air ports 8.

    Abstract translation: 目的：为了通过气化煤粉生产还原气体来减少产生的NO x和烟尘的排放率，通过给预定温度高于规定温度或者富氧的特定空气比的一次燃烧用空气， 与含水量和粉煤一起进入燃烧室。 构成：在燃烧时，首先将粉煤与含水量的混合物从燃料供给管5供给到一次燃烧室2a中。同时，空燃比为0.7〜 0.95，预热高于400℃或富氧，从一次燃烧空气供给管6供给到一次燃烧室2a中。然后，燃煤被粉煤气化。 通过这种方法，促使粉煤气化为还原气体，并且在还原室2b中CO和H 2的浓度增加，以提高NO x的还原率。 接下来，气体被供给到形成在还原室2b上方的二次燃烧室2c中，并且通过从空气端口8供给用于二次燃烧的空气，未反应的还原气体在室2c中燃烧。

    Inverted low nox boiler
    158.
    发明专利
    Inverted low nox boiler 有权
    反转的低NOX锅炉

    公开(公告)号：JP2010139176A

    公开(公告)日：2010-06-24

    申请号：JP2008316721

    申请日：2008-12-12

    Applicant: Kawasaki Plant Systems Ltd ,  カワサキプラントシステムズ株式会社

    Inventor： SUEMITSU NOBUO ,  MUTO SADAYUKI ,  TODA SHINICHI ,  IGARASHI MINORU

    IPC: F22B31/00 ,  F22B37/48 ,  F23C6/04

    CPC classification number: F23C6/04 ,  F23C5/08 ,  F23C6/045 ,  F23C2201/101 ,  F23G5/165

    Abstract: PROBLEM TO BE SOLVED: To provide a low NO X boiler capable of reducing NO x emission and discharging ash without stopping a furnace and enabling nonstop continuous operation even when inferior quality fuel including large nitrogen content and ash content is used. SOLUTION: A high-temperature reduction combustion zone 2 is formed at an upper end part of a cylindrical combustion chamber 1 and a two-stage combustion zone 3 is formed at an intermediate stage part. The lower part of the two-stage combustion zone 3 is narrowed to have a tapered shape in which a combustion chamber wall is positioned at an approximately 35° with respect to the vertical line, and an ash discharge port 8 is provided in the tapered bottom part. A gas outflow port 11 leading to a gas leading passage 12 is provided on the lower side face of the two-stage combustion zone 3. After passing through a steam superheater 13 and an economizer 14, the gas leading passage 12 is connected to a tail-end process. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种能够减少NO x 排放并排出灰分而不停止炉子的低NO SB SBA锅炉，即使在劣质的情况下也能够不间断地连续运行 使用包括大氮含量和灰分含量的优质燃料。 解决方案：在圆筒形燃烧室1的上端形成有高温还原燃烧区2，在中间部形成两级燃烧区3。 两级燃烧区3的下部变窄为具有锥形形状，其中燃烧室壁相对于垂直线定位在大约35°，灰口排出口8设置在锥形底部 部分。 在两级燃烧区3的下侧面设有通向气体导出通道12的气体流出口11.在通过蒸汽过热器13和节能器14之后，气体导出通路12与尾部 -end过程。 版权所有（C）2010，JPO＆INPIT

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