RU1838720C - Set for burning - Google Patents

Description

The invention relates to an installation for burning, which is described in more detail in the restrictive part of the claims.

An object of the invention is to provide an incinerator in which, first of all, the aforementioned critical circumstances of a closed process are structurally designed in such a way that (an improved and extremely efficient construction is provided.

The main characteristics of the incinerator in accordance with the present invention in order to achieve these goals are as follows: the device for supplying fuel to the grate and the device for removing coarse-dispersed particles contained in the fuel are combined into at least one group penetrating through

the grate is almost in the same place. This solution makes the design easy to implement and provides unimpeded movement of material flows.

One of the most preferred embodiments of the present invention provides that the outlet end of the return pipe extending from the particle separator and intended to convey coarse material is located at the top of at least one of the aforementioned groups of elements. This solution makes the entire structure compact: fuel supply, removal of coarse material and the return of solid material

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Lena in direct connection with the grate, in a single image with it.

Other advantages of the construction of the present invention are presented in the dependent claims.

Below the present invention is described in more detail in the following description with reference to the attached drawing, which shows a cross section of the combustion apparatus of the present invention (including where the grate is located).

As far as the basic design of the combustion plant is concerned, reference should be made to the existing practice in the field under consideration, and in particular to the taste parallel to the present application and entitled “Combustion plant”, which relates, first of all, to the special decision to place the flue gas inlet inside the reaction chamber, as well as the fact that the outer shell of the particle separator is made in the form of a heat exchange surface.

The drawing shows the cooled part of the grate 1 located in the reaction chamber R. In this cooled part, an opening 2 is provided where an annular feed chamber 4 is connected to the cooling pipes 4 of the grate. The annular feed chamber 4 operates when the coolant is supplied to the return pipe.

Below the opening 2, the grate is equipped with a shell 5, on the outside of which (inside the reaction chamber) there is a distribution space 6, from which combustion air entering the fluidized bed (not shown) is supplied through the nozzles penetrating through the grate over the grate. A fuel supply pipe 7 passes through the entire shell 5, penetrating the bottom of the reaction chamber. The tip of the fuel supply pipe 7 at the grate 1 level is located in the distribution chamber 8, where according to the design solution shown in the drawing there are four (usually horizontal) fuel supply pipes 9, diverting to the sides of the distribution chamber above the grate and located at an angle of 90 ° one to another, when viewed from above. The lower part of the fuel supply pipe 7 is equipped with a device 10 for removing solid material, allowing to supply fuel of the required composition (without impurities). Elements 7, 8, 9 together form a feeder

fuel to the grate predominantly in the radial direction relative to the longitudinal direction of the fuel supply pipe.

The coarse-grained material discharge pipe 11 has a ceramic-coated bell at the top and starts from the level of the upper side 1a of the grate 1, namely, from where the feed chamber 4 is located. The lower part of the discharge pipe 11 enters the inside of the shell 5 and opens into the chamber 12. under pressure and designed to return the finely divided component of the coarse

5 (mainly) material into a fluidized bed. The so-called counterflow separation principle. In the lower part of the chamber 12, which is under pressure, there is a pipe 13 for unloading coarse material. In addition, there is a blast tube 14 for blowing the compressed gaseous carrier into the chamber 12, which is suppressed, as is necessary according to the principle of separation in countercurrent. Trumpet

5 to 11, the discharge encompasses the fuel supply pipe 7 and, therefore, coarse particles are discharged through the resulting annular gap. In addition, the drawing shows that the pipe 7 of the fuel supply passes

0 inside chamber 12 under pressure ..

The output end of the return pipe 15 is located above the distribution chamber 8 at a certain distance from its upper part 5 or in a similar manner. According to the structural solution shown in the drawing, the return pipe 15 is made in the form of a heat exchange surface. Vertical fuel pipes (total

0 4 pipes) go from the supply chamber 4 upward to the annular distribution chamber 17 located in the lower part of the return pipe 15. From there, through pipes 18 embedded in a ceramic protective layer of pipe walls

5-15, the coolant flows upward, namely, to the lower part of the outer shell of the particle separator, in particular as described in the parallel application of the Combustion Plant. An advantage of the present invention is that in the case described above, at least one of the groups composed of elements 7, 8, 9 and 11 is arranged along the axis of the reaction chamber R of circular cross section.

5 arranged vertically so that the fuel supply pipe 7 and the discharge pipe 11 are aligned with the reaction chamber R. Thus, the symmetry of the fuel supply and the return of coarse material is ensured. Consequently, the solid material return pipe 15 can advantageously be a vertical pipe, the upper end of which is connected to the lower part of the cyclone separator, while its axial line coincides with the axial line of the reaction chamber R.

SUMMARY OF THE INVENTION

Claims (10)

1. Installation for burning. Containing a reactor chamber, in the lower part of which there is a grate connected to the fuel supply device, and a device for removing coarse particles of fluidized bed material, as well as at least one separator with a hole cleaning device gases from the material particles of the layer and the pipe returning the latter through an open end to a fluidized bed, different from TVM, which, in order to simplify and improve the reliability of the design, a hole is made in the grate, and the device for feeding fuel and removing particles All layers are made in the form of at least one block located in said hole. 2. Installation according to claim 1, characterized in that the open end of the return pipe is located at the top of said block. 3. Installation according to claim 1, characterized in that the fuel supply device is made in the form of one vertical pipe equipped with fuel distributors in the upper part in a direction radial relative to the vertical pipe. 4. Installation according to claim 3, with the exception of the fact that the fuel distributors are made in the form of radially arranged horizontal plane of tubular elements united by a camera. 5. Installation according to claim 3, with the exception that the coarse particle removal device is made in the form of a tubular shell covering the fuel supply device and with its upper end adjoining the hole in the grate. 6. Installation according to claim 5, with the exception that it further comprises a separation chamber with a pipe for discharging coarse particles of material, while the lower end of the tubular shell is located in the separation chamber, and the pipe for removing bottom of the last. 7. Installation according to claim 5, with the exception that the upper end of the tubular shell is made expanding towards the block. 8. Installation according to claim 1, characterized in that the reactor chamber is made of circular cross-section, wherein said at least one unit is arranged along the vertical axis of the reactor chamber. 9. Installation according to paragraphs. 2 and 8, with the fact that the return pipe is located vertically and coaxially with the reactor chamber. 10. Installation according to paragraphs. 1 and 2, characterized in that it further comprises a feed chamber located at the edge of the grate opening, in communication with the last and by-pass pipes, with a return pipe, the walls of which are made of pipes in the visible transmission surface. thirteen eighteen CH1