From the constructive point of view steam generators TGH(V) are uniflow ones with forced circulation. Within these steam generators water under pressure moves at a very high rate through a range of coil pipes, while gas-product of combustion are forcibly moved along the outer surface of the coil pipes. Hot gases bypass the whole surface of the pipes, thus using all the radiant heat and the convection heat, which results in high intensity of heat transmission.
Water is forcibly driven into the line of consecutive composite coil pipes by the pump, where 90% of water becomes steam. Steam and 10% of the water remained are transferred from the boiler to the separator (where the water is separated from the steam), which guarantees 99% output of dry steam. Solid elements congregate at the bottom of the separator and are blown out from there, when blow valve opens.
Accurate monitoring of stress altering is possible thanks to the use of the patented bypass regulator, which constantly measures steam pressure. This regulator measures the volume of the feed water delivered to the coil pipes in line with every alteration of steam consumption. Such a moduled flow of the feed water changes the evaporative capacity without provoking heat buff load with every switching on and off of the feed water pump - what takes place in conventional boilers.
What is more the patented system of servomotor control of fuel accurately regulates the supply of fuel and air to create the most efficient combustion mixture through constant observing the changes in feed water flow. Inefficient cycle of burner operation is excluded, the satisfaction of requirements while the stress rises and falls is provided, steam pressure is supported on the same level all the time. The construction implies that there is no possibility to set on fire the boiler if there is no water inside the coil pipes.
Water conditioning system of steam generators TGH
Water conditioning for any boiler implements two major functions: 1) prevention of sludge to occur on the inner surfaces of the pipes; 2) prevention of corrosion to occur on the pipe walls, other parts of the boiler, or user's systems.
Delivery set of the TGH steam generator equipment includes integrated system of chemical treatment and deaeration of feed water constructed on steel platforms.
A softener of feed water, a deaerator plant and a system of chemical additives make up integrated system of chemical treatment of water.
System of water softening consists of two parallell filters with one control module for water purification from hardness, dissolved Fe, organics and heavy metals (the filtering substance - mixture of ion exchange resins) is aimed at sludge emergence prevention on the walls of coil pipes of the steam generator. Regeneration is conducted automatically if needed. At the same time the filter that was in operation trasferres to the regeneration stage, it is replaced by the other filter that was previously in standby. After the regeneration is completed the first filter goes to standby stage. The process is cyclic.
Deaeration plant of atmospheric type is aimed at the removal of corrosion-aggressive gases (oxygen and loose CO2) from the feed water while it is heated. The deaeration plant includes:
The deaeration plant in tandem with the control panel is based on a steel platform.
System of chemical additives is aimed at the extra treatment of the feed water and at the removal of the rest of hardness, which succedeed in coming through the softener. These are examples of extra treatment (à) use of phosphates, (b) carbonates, (c) chelants, (d) polymers, (e) combinations of the substances named above.
Extra chemical treatment without softening doesn't guarantee sufficient results. The rate of the sludge occuring will be deminished, but the very sluge will not be removed.
System of chemocal treatment includes:
We strongly recommend you to ask our company representatives for consultation on the water treatment. This will enable you to make the right choice of the method and reagents that will correspond with your boiler and system.
Rapid start and switching off (5 minutes)
Working pressure – from 1 bar to 210 bar
Control range – 8:1
Firing type – spark, discontinuous gas pilot
Speedy reaction on the heat stress alteration (1 minute)
Fuel – natural gas, diesel oil
Small size (requires 30% less space)
Stationary and mobile (container) constructions
TGH(V) has many advantages:
1. Economical efficiency:
Steam generators are delivered in sets. Installation and start-up work requires minimum time, which notably reduces costs.
Rapid start and immediate switching off. Warm up time does not exceed 5 minutes after start, which allows you to use fuel more efficiently in terms of economy (up to 15% less).
Quick response on alteration of heat stress (the number of curing rooms in operation). Response time is no more then 1 minute thanks to effective system of management of the burner and small volume of the water circulating within the coil pipes.
Gradual regulation of power. The maximum possible control range of productiveness is 8:1, which allows uninterruptably provide consumers with heat without activation of switching on or off regimes with low system load. The quality of the steam nevertheless remains permanent.
Since fuel economy depends on many factors, the general economy will depend on the peculiarities of use of steam generators. Economy while using steam generators may reach 25% in comparison with conventional boilers.
2. Peculiarities of technology and construction:
Small outer surface means small space for convection and small radiant energy losses. Due to large size of fire-tube boilers their convection losses make up approximately 3% depending on the type of a boiler-house. The same losses in steam-generator TGH(V) are less than 0,7%.
Multi-fuel technology. Natural gas, diesel oil, propane all can be used as a fuel. Transition from the one type of fuel to the other is reached through a turn of selective switch.
Steam generator TGH(V) construction guarantees its reliable operation, the simplicity of technical service and safe exploitation. Constant presence of operating personnel while generator is in operation is not necessary.
Compatibility with existing boiler technologies. Small size and weight, the absence of need to build special basement allow to install steam generators TGH(V) within existing boiler-houses and in other working areas to get extra steam or step-replacement of overage boilers.
Steam generators TGH(V) are not subject to thermal shocks, they have a more prolonged life even if frequently switched on and off.
Period of liability for defects for steam generators TGH(V) – 24 months.
Main technical characteristics and size