Hitachi chimney

Incinerating waste produces exhaust gases laden with diverse pollutants. Different processes are used to remove these pollutants before the purified flue gas leaves the plant safely through the stack. For decades HZI hitachi chimney been doing research into flue gas treatment and developing new and effective treatment systems. We harness internal synergies to optimally match and combine our combustion and flue gas treatment equipment, hitachi chimney.

Based on the design, manufacturing, and building technologies we acquired through our experience in building ships, bridges, water gates, and ocean structures, since we have recorded building more than steel stacks in Japan and overseas and contributed to creating social infrastructure. In addition to new installations of ultra-tall stacks reaching around meters and stacks incorporating an earthquake-proof system, we can respond to customers requirements with our total engineering capabilities from design to onsite construction including repairs, reinforcing works, and diagnosis of earthquake-proof performance of existing facilities that are growing in number these days. The typical design of an ultra-tall stack is a pylon-supported stack in which the steel stack body is supported by a pylon. The pylons also serve as scaffolding for maintenance purposes, thus reducing ongoing operating costs. In the building method, which we developed before other companies, we use the jack-up method, which enables the welding of stack bodies on the ground.

Hitachi chimney

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Organic Carbon Compounds Adsorption onto activated carbon or lignite coke.

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It is difficult to define ethics precisely. Some people believe that ethics will change as society changes just as morals do. However, I regard ethics as something universal that is rooted in the inherent nature of humanity. I once asked a renowned Buddhist about the essence of ethics. Conversely, without compassion, you do not have true ethics.

Hitachi chimney

Chillers are ideal for large commercial and industrial buildings due to their high capacity and energy efficiency, and they eliminate noise and refrigerant risks near occupied spaces. Hitachi offers a diverse range of Chiller systems with tonnage capacities from small RT to large RT , including Air-cooled and Water-cooled, compressor types of scroll, screw, and Centrifugal Chillers, and Absorption chillers. Hitachi has global manufacturing capabilities and provides worldwide services. In addition to Chillers, Hitachi also offers a comprehensive selection of airside products, including fan coil units and air handling units for space conditioning and ventilation. With over 80 years of experience, we are confident that our range of cooling and heating solutions provides households and businesses with the leading climate control technology to create and maintain the perfect indoor environment. This includes our chiller systems, meeting the evolving requirements of our clients means that we are constantly innovating our systems, resulting in a collection of elegant and efficient. Whether air-cooled chiller systems or water-cooled chiller systems, they are designed to adapt to your needs and the space they inhabit. We cater for all types of projects and offer an extensive range of solutions so that you can find the system right for the job.

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Recently when stacks are to be installed in the suburb of a town, it is indispensable to build a stack that fits in with the surrounding scenery. If the temperature is too low, the reaction slows and a large portion of the ammonia reaches the stack unused. Thanks to different forms of intensive contact of the flue gases with water, pollutants are captured and separated extremely thoroughly. Dry Sorption XeroSorp. Other advantages of the process are low consumption of ammonia water almost stoichiometric and low ammonia slip. In our patented process, the ammonia is recovered from the effluent and can be re-injected into the post-combustion chamber. Major products. The HZI SemiDry system involves a semi-dry sorption process employing the principle of the circulating fluidised bed. In this way, even the lowest BREF emission values can be achieved without difficulty. Flue gas cleaning achieves the highest performance when the various components are combined — on the basis of the individual requirements of the plant. In the SNCR selective non-catalytic reduction process, nitrous oxides NOx react with ammonia and are chemically converted into nitrogen a natural constituent of air and water vapour.

Hitachi Construction Machinery has been developing its engineering capabilities in line with social development and manufacturing and advancing construction machinery, which supports the construction of social infrastructure, industry and residential houses around the world.

Therefore, we do not carry out performance evaluation work. Contact Us. Recently when stacks are to be installed in the suburb of a town, it is indispensable to build a stack that fits in with the surrounding scenery. Instead we use two different adsorption additives for neutralisation: hydrated lime and sodium hydrogen carbonate commonly known as sodium bicarbonate. Wet scrubbers consist of several stages, each of which fulfils a particular purpose: separating out specific pollutants, saturating flue gases, or extracting heat. Each scrubber stage therefore features specific equipment, for example nozzles, liquid distributors, packed beds, ringjets, droplet separators, etc. The excess can be removed downstream in a wet scrubbing process. Nitrous oxides NOx are converted into nitrogen and water vapour at a catalytic surface, with ammonia water or urea used as a reducing agent. The Main Advantages of Adsorption onto Activated Carbon or Lignite Coke: Can easily be integrated into the various processes for removing acid gases XeroSorp, SemiDry, wet scrubber Very simple system with only a small number of components storage and conveying Proven technology with a long and successful track record in industry. Various pollutants are introduced into the combustion process by the waste, including oxidised combustion products such as SO 2 and NO x products, as well as substances such as hydrogen chloride and hydrogen fluoride, heavy metals, dioxins and furans. Depending on the overall flue gas treatment approach, the activated carbon or lignite coke can be introduced and subsequently ejected at different stages of the process: In dry sorption XeroSorp : Introduced into the XeroSorp reactor and removed at the fabric filter residue discharge In the semi-dry sorption process HZI SemiDry : Introduced into the SemiDry reactor and removed at the fabric filter residue discharge In a counterflow process: Injected into the flue gas duct before the fabric filter and removed at the fabric filter residue discharge In a wet scrubber with a ringjet stage multi-venturi stage : Injected into the flue gas duct before the wet scrubber, removed at the ringjet stage and finally ejected via the scrubber blowdown In a wet scrubber without a ringjet stage multi-venturi stage : Suspension of activated carbon or lignite coke injected directly into the sump of the packed bed stage; ejected via the scrubber blowdown and removed in a lamella separator.