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    • 21. 发明授权
    • Method for feeding wastes into a boiler
    • 将废物送入锅炉的方法
    • US5976387A
    • 1999-11-02
    • US819936
    • 1997-03-18
    • Tsutomu HigoRoberto Masahiro SerikawaKazuhiro Kondo
    • Tsutomu HigoRoberto Masahiro SerikawaKazuhiro Kondo
    • F23G5/02B09B3/00B09C1/06C02F11/10C02F11/18F23K1/02C02F1/02
    • C02F11/18B09B3/00B09C1/06C02F11/10Y02W10/40Y10S210/919
    • A waste containing organic solids is fed into a boiler after it has been subjected to a hydrothermal reaction treatment in the presence of water. A slurry containing the waste is held under high-temperature and high-pressure conditions to cause a hydrothermal reaction such that an acidic slurry is formed during part of or throughout the process of the hydrothermal reaction. Thereby the content of oxygen in the waste relative to carbon atoms in building molecules of the waste is reduced. This concurrently causes removal of halogens in said building molecule and transferring the halogens into the slurry. The slurry then is cooled and dewatered and fed into a combustion section of the boiler. The waste slurry to be subjected to the hydrothermal reaction can be sorted into two portions for separate storage. One portion is a waste slurry the pH of which will increase as a result of the hydrothermal reaction. The other portion is a waste slurry the pH of which will decrease during the hydrothermal reaction. The two slurries are combined together and subjected to the hydrothermal reaction, with their relative amounts of supply being adjusted such as to form an acidic slurry either during part of or throughout the process of the hydrothermal reaction. Wastes can be supplied as a mass of high heat value into the boiler in such a manner that organic matter is transferred by a smaller amount into the aqueous phase during the hydrothermal reaction, and there is no scale deposit on the surfaces of those areas of the system components in contact with the liquid.
    • 将含有有机固体的废物在水的存在下进行水热反应处理后,进入锅炉。 将含有废物的浆料保持在高温高压条件下进行水热反应,使得在水热反应的一部分或整个过程中形成酸性浆料。 因此,废物中的氧相对于碳原子在废物构建分子中的含量降低。 这同时导致去除所述构建分子中的卤素并将卤素转移到浆料中。 然后将浆料冷却并脱水并进料到锅炉的燃烧部分。 要进行水热反应的废浆料可以分成两部分分开储存。 一部分是由于水热反应而使其pH值增加的废浆料。 另一部分是在水热反应期间其pH将降低的废浆料。 将两种浆料组合在一起并进行水热反应,在水热反应的一部分或整个过程的一部分或整个过程中调节其相对供应量以形成酸性浆料。 可以将废弃物以大量的高热量供给到锅炉中,使得在水热反应期间将有机物质转移到水相中较少量,并且在这些区域的表面上没有结垢 系统组件与液体接触。
    • 24. 发明授权
    • Dried sludge melting furnace
    • 干渣熔化炉
    • US5357879A
    • 1994-10-25
    • US63307
    • 1993-05-19
    • Shunichi ShionoKazuyuki Suzuki
    • Shunichi ShionoKazuyuki Suzuki
    • B09B3/00C02F11/10F23G5/50F23G7/00F23N1/02F23N5/00F23N5/18G05B13/02
    • F23N5/003F23N1/022F23N5/184F23G2202/102F23G2202/103F23G2202/20F23G2203/30F23G2209/12F23N2023/08F23N2023/36F23N2023/52F23N2025/08F23N2025/16F23N5/006Y10S706/90
    • In a dried sludge melting furnace apparatus, at least one of following two controls is executed. In one of the controls, the primary combustion chamber (PCC) upper combustion air supply amount and the PCC lower combustion air supply amount are adjusted so as to respectively become a target PCC upper combustion air supply amount and a target PCC lower combustion air supply amount which are obtained from an inferred PCC upper combustion air supply amount and an inferred PCC lower combustion air supply amount. The inferred PCC upper and lower combustion air supply amounts are obtained by a fuzzy inference device (221). In the other control, the total combustion air supply amount and the second combustion chamber (SCC) burner fuel supply amount are adjusted so as to respectively become a target combustion air supply amount and a target SCC burner fuel supply amount which are obtained from an inferred combustion air supply amount and an inferred SCC burner fuel supply amount. The inferred combustion air supply amount and the inferred SCC burner fuel supply amount are obtained by a fuzzy inference device (222).
    • 在干式污泥熔化炉装置中,执行以下两个控制中的至少一个。 在其中一个控制中,调节主燃烧室(PCC)上燃烧空气供给量和PCC下燃烧空气供给量,以分别成为目标PCC上燃气供给量和目标PCC下燃烧空气供给量 这是从推测的PCC上部燃烧空气供应量和推测的PCC较低的燃烧空气供应量获得的。 推断的PCC上下燃烧空气供给量是通过模糊推理装置(221)获得的。 在另一个控制中,调节总燃烧空气供给量和第二燃烧室(SCC)燃烧器燃料供给量,以分别成为从推测得到的目标燃烧空气供给量和目标SCC燃烧器燃料供给量 燃烧空气供应量和推断的SCC燃烧器燃料供应量。 通过模糊推理装置(222)获得推断的燃烧空气供给量和推断的SCC燃烧器燃料供给量。
    • 27. 发明授权
    • Method and arrangement for treatment of sewage sludge
    • 污水处理方法与布置
    • US5246599A
    • 1993-09-21
    • US734197
    • 1991-07-22
    • Max Aicher
    • Max Aicher
    • C02F11/12C02F11/10C02F11/18C02F103/00C10B53/00F23G5/027F26B17/20F26B23/02B01D35/18
    • C10B53/00C02F11/10F23G5/027F26B17/205F26B23/028F23G2201/101F23G2201/303F23G2201/304F23G2204/103F23G2206/10F23G2209/12F23G2900/52001F23L2900/07005Y02E20/344Y02W10/40
    • In a treatment or processing or sewage sludge in the sense of recycling, where the sewage sludge is to begin with dried (T), subsequently converted (K) under anaerobic conditions at approximately 250.degree. to 350.degree. C. and finally is sintered at at least 1250.degree. C. in successive steps, it is proposed to perform all process steps including the conveyance of the commodity to be processed between the individual processing steps successively in continuous passage in a closed system. Only the vapors are removed in this system in the drying stage (T) and the conversion gases in the conversion stage (K) and they are condensed; the heat quantity contained in the flue gas generated during the sintering process (S) is utilized for heating to begin with the conversion stage (K) and after that the drying stage (T). Because the flue gases are used for heating the processing steps in the sequence of the naturally occurring temperature gradient, the processing of the sewage sludge is achieved so as to be nearly self-sufficient as far as the energy requirement is concerned, meaning the energy required for the processing is largely supplied by the calorific value of the organic ingredients contained in the sewage sludge itself. Because the sewage sludge is processed in a closed system, nefarious effects upon the environment are avoided.
    • 在循环利用的污水处理或污水处理中,污水从干燥(T)开始,随后在250〜350℃的厌氧条件下转化(K),最后在 至少1250℃,建议执行所有的处理步骤,包括在闭合系统中连续通过的各个处理步骤之间输送待处理的商品。 在该系统中,在干燥阶段(T)和转化阶段(K)中的转化气体中仅蒸发蒸气,并将其冷凝; 在烧结过程(S)中产生的烟气中所含的热量用于加热,从转化阶段(K)开始,之后是干燥阶段(T)。 由于烟道气按照天然存在的温度梯度的顺序加热处理步骤,所以能够满足污水污泥的处理要达到能源需求几乎自给自足,意味着所需的能量 因为处理主要是由污水污泥本身含有的有机成分的热值提供的。 由于污水污泥在封闭系统中进行处理,因此避免了对环境的恶劣影响。
    • 28. 发明授权
    • Partial oxidation of sewage sludge
    • 污水污泥的部分氧化
    • US5211724A
    • 1993-05-18
    • US685339
    • 1991-04-15
    • Motasimur R. KhanRonald J. McKeon
    • Motasimur R. KhanRonald J. McKeon
    • C02F11/06C01B3/36C02F1/04C02F1/38C02F11/00C02F11/10C02F11/12C10J3/46C10L1/32C10L5/46C10L7/00
    • C02F11/123C01B3/36C02F1/048C02F11/10C10J3/466C10J3/86C10K1/101C10L5/46C10J2300/0926C10J2300/0996C10J2300/1223C10J2300/1606C10J2300/165C10J2300/1656C10J2300/1671C10J2300/1846Y02E50/10Y02E50/30Y02P20/145Y02W10/40Y10S48/07
    • An improved process for the low-cost disposal of noxious sewage sludge in a safe way without polluting the environment. In the process, sewage sludge having a solids content of about 0.5 to 20 wt.% is concentrated by pressing in a belt filter press, optionally followed by pressing in a high intensity press. It was unexpectedly found that the morphology of the resulting dewatered sewage sludge is changed by such mechanical treatment so that slurries with higher concentrations of solids are achieved. The dewatered sewage sludge is heated, flash evaporated and/or centrifuged, and mixed with a supplemental fuel e.g., liquid hydrocarbonaceous and/or solid carbonaceous fuel to produce a pumpable fuel slurry having a total solids content in the range of about 50 to 70 wt.% and comprising about 10 to 40 wt.% dewatered sewage sludge and having a higher heating value in the range of about 5,000 to 14,000 BTU/Lb. The fuel slurry may be reacted by partial oxidation in a conventional gasifier to produce synthesis gas and/or fuel gas. The thermal energy in hot byproduct steam and flue gas streams are used to heat the dewatered sewage sludge. In one embodiment, the pumpable slurry of dewatered sewage sludge and supplemental fuel is burned by complete combustion in a furnace or incinerator for the production of steam.
    • 以安全的方式低成本处置有害污水污泥而不污染环境的改进措施。 在此过程中,固体含量约为0.5-20重量%的污水污泥通过在带式压滤机中压制而浓缩,任选地在高强度压榨机中压制。 意外地发现,通过这种机械处理改变得到的脱水污水污泥的形态,从而实现具有较高浓度固体的浆料。 脱水的污水污泥被加热,闪蒸和/或离心,并与补充燃料例如液体含烃和/或固体碳质燃料混合以产生总固含量在约50-70重量%范围内的可泵送燃料浆料 %,并且包含约10至40重量%的脱水污水污泥,并且具有在约5,000至14,000BTU / Lb范围内的较高热值。 燃料浆料可以在常规气化器中通过部分氧化反应以产生合成气和/或燃料气体。 热副产物蒸汽和烟气流中的热能用于加热脱水污水污泥。 在一个实施方案中,脱水污水污泥和补充燃料的可泵送浆料通过在用于生产蒸汽的炉子或焚化炉中完全燃烧而燃烧。