SU398272A1 - COOLING SYSTEM FOR FUEL - Google Patents

Description

one

The invention relates to installations for the grinding of fuels, and preferably for brown coal and shale, for the individual plants of power plants.

Installations with tangential hammers and mills and separators are known. To isolate a finished product, a mill product ached.

These plants also have a number of flaws, the most serious of which are s-minor grinding tools, which resulted in frequent replacement and irregularity in the fractional composition of coal or shale Yyli produced in cruciform mills.

This leads to a higher rate of mechanical damage with a mechanical underburner and. to the slagging of the shielding furnace of the boiler unit of pipes and steam heating, since large particles do not completely burn in the volume of the combustion chamber and their burning takes place in the zone of heating heater and near the screens. In addition, a significant amount of large particles in the dust leads to increased abrasive wear of the heating surfaces of the boiler unit.

The purpose of the invention is to reduce the wear of the grinding bodies of a hammer mill, to improve the uniformity of the structure of the finished dust, to reduce the specific energy consumption.

for grinding and ensure that B03MO KHOCTij is separated from the hard-to-grind components of its mineral part.

This is achieved by the fact that each mill is divided transversely by non-urban areas into at least two sections, each of which has a separate supply of drying agent and is equipped with a separate separator, and a return line from the separator is connected to an inlet pipe with each section. com nose. every week section, except the last one. The line of withdrawal from the seiaator of the last section (The mill can be connected to the discharge channel to remove difficult to remove M1 sheral components of the toner from the grinding circuit.

The drawing shows a diagram of a proposed grinding plant consisting, for example, of section 1-5.

Crude fuel is supplied only to the first section, while air (or furnace GAS) is transported through box 6 to all pump houses and mills.

The process of grinding fuel and dust separation is as follows.

The raw fuel fed from the bunker 7 with the feeding of the tel 8 8 follows the chute 9 to section 1 of the grinding chamber. After grinding the mill product 1U, a separate separator 11 enters the section 10 of this section, where dust is collected from the summer with a set of particles and is fed to the burners or dust bucket (not shown).

The return from the first unit 11 of the unit 11 is dried at the point 13 for lining up grinding in section 2, item 3 (Which (small industrial product (CT enters the second separator 11 second)), where the product again passes the separation of dust and return. The apalogichy process takes place In the remaining sections, the grinding of the ustaiovs (ki. Thus, in each section, only those particles of fuel that have not reached their respective sizes will be crushed.) As a result, the abrasive dust will sharply increase, its size will increase significantly. The composition and substance of wear and tear of human organs. In addition, the fuel components that IK consumed, which IK mostly belongs to, M. Minerals, will end up in the last mill mills. Do not lerenzmelchika, or withdraw from the time of the circuit. Do not feed into the furnace. For this estrus 13 from the separator 11 of the last section 5 using the switch 14; can be connected either to the diverter 15 to apply a return to the complementary l-premol

On the other hand, in the same time, with a chute 16, to remove it from the reamer circuit.

PRIOR DIRECTORSHIP and

1. Installation for grinding fuel, so-called tangential automatic current and senators for separating the final grinding and product, characterized in that, in order to reduce the grinding element of the mill, to reduce the uniformity of the structure of the finished dust, to reduce the unit power consumption pa milling and desaturation of the possibility of separating the mineral components of its mineral part from the fuel, each section mill with transverse partitions and at least two sections, each of which have t is a separate inlet of the drying agent and is equipped with a separate seaiator, and the liner is designed to divert the return from the separator to each front | | section is connected to the inlet pipe subsequent sections, with the exception of the latter.

2. Installation lo l. characterized in that the withdrawal line from the separator of the last section of the mill is connected to the dumping channel (Removable mineral components of the fuel from the grinding coitur).