RU2817741C1 - Vertical cylindrical tubular furnace - Google Patents

Abstract

FIELD: heating; furnaces.

SUBSTANCE: proposed invention is intended for heating oil products or other liquid media in oil refining, chemical and other industries. Vertical cylindrical tubular furnace includes a lined housing, a combustion chamber, a burner, a tubular coil made of two parts, internal and external, installed coaxially to a cup for supplying hot gases to a convection chamber with a coil, and a chimney. Inner part of the tubular coil is a spatial spiral. Diameters of spiral turns are maximum in central part and decrease to edges. External part of the coil is made in the form of parallel rings arranged one above the other and connected to each other in the lower parts by cross-flows. Planes of the rings are inclined to the horizontal line. Convection chamber coil is made in the form of Z-shaped pipes located in vertical planes, connected by branch pipes.

EFFECT: proposed design of vertical cylindrical tubular furnace provides intensive heating of liquid media.

1 cl, 2 dwg

Description

The present invention is intended for heating petroleum products or other liquid media in oil refining, chemical and other industries.

A tubular furnace is known containing a convection chamber, a radiation chamber with wall-mounted single-row pipe screens, the front walls of the radiation chamber, the end walls of the radiation chamber, characterized in that it is equipped with double-row wall staggered pipe screens installed on the end walls, and the pipes of each stream of the single-row wall screen have a front walls through one are connected to the pipes of a double-row wall screen by angles, and the pipes of a double-row wall checkerboard screen of the end walls are connected by rolls, with pipes of the same stream located on each end wall [RF Patent for PM No. 19314, IPC F23D 14/00, publ. 08/20/2001, BI No. 23].

The disadvantages of this tube furnace include the low heating intensity.

The closest to the proposed invention is a vertical cylindrical convection tubular furnace for small-scale oil refineries, containing a combustion chamber with a burner, a lined body and a tubular coil housed in it, a convection chamber, a glass for supplying hot gases to the convection chamber, as well as smoke pipes. The combustion chamber is equipped with a cylindrical pre-chamber located tangentially to it, and a tubular coil is installed coaxially to the hot gas supply glass, is made of two parts, internal and external, and is equipped with a manifold supplying hydrocarbon raw materials, connected to both parts of the coil, and discharging hot flows of raw materials to the outlet collector [RF Patent 2294953, IPC C10G 9/00, publ. 03/10/2007, BI No. 7].

The disadvantages of this tube furnace include the low heating intensity.

The technical result of this invention is the creation of a vertical cylindrical tubular furnace that provides intense heating of liquid media.

The technical result is achieved by the fact that a vertical cylindrical tubular furnace is proposed, containing a lined body, a combustion chamber, a burner, a tubular coil made of two parts, internal and external, installed coaxially to a glass for supplying hot gases to a convection chamber with a coil, and a chimney.

Distinctive design features of the proposed invention are that the inner part of the tubular coil is a spatial spiral, the diameters of the turns of which are maximum in the central part and decrease towards the edges, and the outer part is made in the form of parallel rings located one above the other, interconnected in the lower parts by cross-flows , and the planes of the rings are inclined to the horizontal, the coil of the convection chamber is made in the form of Z-shaped pipes located in vertical planes, connected by pipes.

In fig. Figure 1 shows a diagram of a vertical cylindrical tube furnace.

In fig. 2 shows view A.

A vertical cylindrical tube furnace contains a lined body 1, a combustion chamber 2, a burner 3, a tubular coil made of two parts, an inner 4 and an outer 5, installed coaxially with a glass 6 for supplying hot gases to a convection chamber 7 with a coil 8, a chimney 9. Internal part 4 of the tubular coil is a spatial spiral, the diameters of the turns of which are maximum in the central part and decrease towards the edges, and the outer part 5 is made in the form of parallel rings located above each other, connected to each other in the lower parts by cross-flows 10, and the planes of the rings are inclined to the horizontal , the coil 8 of the convection chamber 7 is made in the form of Z-shaped pipes located in vertical planes, connected by pipes 11.

A vertical cylindrical tube furnace operates as follows.

The liquid to be heated enters the coil 8 of the convection chamber 7, into the upper Z-shaped pipe. Moving along it to the opposite end, it heats up due to interaction with the upward flow of flue gases entering through glass 6 from combustion chamber 2. Next, the liquid flows through pipe 11 into the underlying Z-shaped pipe, where further heating occurs.

Having reached the exit from the lower Z-shaped pipe, the liquid is directed to the lower ring of the outer part 5 of the tubular coil, moves along it and in the upper part, through the overflow 10, is directed to the next ring.

Here, the liquid is heated directly from the flame created by burner 3.

Having reached the exit from the upper ring, the liquid flows down the inner part 4 of the tubular coil, which is a spatial spiral, the diameters of the turns of which are maximum in the central part and decrease towards the edges.

Here, the liquid is also heated directly from the flame created by burner 3.

From the top of the inner part 4 of the tubular coil, liquid is discharged from the vertical cylindrical tube furnace.

Due to the fact that the inner part 4 of the tubular coil is a spatial spiral, the diameters of the turns of which are maximum in the central part and decrease towards the edges, an almost identical, minimum acceptable distance from the turns to the flame is ensured, which ensures intense heating of the liquid along the entire height of the inner part 4 tubular coil.

Due to the fact that the outer part 5 of the tubular coil is made in the form of parallel rings located one above the other, connected to each other in the lower parts by overflows 10, intense heating of the liquid occurs both from the flame and from the heat reflected from the walls of the furnace body 1.

Due to the fact that the planes of the parallel rings of the outer part 5 of the tubular coil are inclined to the horizontal, alternating ascents and descents of the liquid during movement are ensured, which contributes to turbulization of flows and increased heating intensity.

The design of the coil 8 of the convection chamber 7 is made in the form of Z-shaped pipes located in vertical planes, connected by pipes 11, which turbulizes the flow of gases in the convection chamber 7, which leads to intense heating of the liquid.

The proposed design of a vertical cylindrical tube furnace provides intense heating of liquid media.

Claims (1)

A vertical cylindrical tubular furnace containing a lined body, a combustion chamber, a burner, a tubular coil made of two parts, internal and external, mounted coaxially to a glass for supplying hot gases to a convection chamber with a coil, a chimney, characterized in that the inner part of the tubular coil is is a spatial spiral, the diameters of the turns of which are maximum in the central part and decrease towards the edges, and the outer part is made in the form of parallel rings located one above the other, connected to each other in the lower parts by cross-flows, and the planes of the rings are inclined to the horizontal, the convection chamber coil is made in the form Z-shaped pipes located in vertical planes, connected by pipes.