Combined fire box lining

Abstract

The invention discloses a combined fire box lining, which is recombined and adopts a new material to replace a refractory material, that is, only the lower section of a head part subjected to high-temperature impact is still combined by an insulation board and the refractory material, and other parts adopt a method of spraying a curing agent on the surface of an elastic ceramic fiber folding block to replace the refractory material. The weight of the fire box is greatly reduced, the hoisting process is not afraid of vibration, site construction is convenient, the construction period is shortened, and large-tonnage hoisting equipment is not needed.

Description

Technical Field

[0001] The invention belongs to the technical field of carbon black industry, and particularly relates to a fire box matched with a dryer. Background Art

[0002] The firebox used in the carbon black industry and matched with the dryer is a circular box composed of a head, several middle parts and a tail. The whole box is divided into upper and lower boxes. Anchor nails are welded inside the box shell and the insulation board and refractory are lined. During on-site installation, the lower box shell is first installed on the foundation and then the insulation board and refractory are laid. The upper box is laid on the platform with insulation board and refractory. After the dryer drum is installed, it is assembled with the lower box. The existing problems are: the firebox is large in size and heavy in weight. The internal refractory accounts for three-fifths of the total weight. It is difficult to install and the tonnage of the hoisting equipment is large. Due to the thick refractory layer, it is easy to be squeezed and crushed during the installation process or cracks are generated inside, but the appearance cannot be seen. In this way, the internal cracks of the equipment expand during operation, causing the high-temperature flue gas to directly contact the outer shell, and red spots or burn-through appear on the shell surface.

[0003] After analysis and research, a combined firebox lining was introduced. The firebox lining was recombined and new materials were used to replace refractory materials. That is, only the lower section of the head subject to high-temperature impact is still composed of insulation board and refractory materials, while the other parts use elastic ceramic fiber folding blocks with curing agent sprayed on the surface instead of refractory materials. This not only greatly reduces the weight of the firebox, but also is not afraid of vibration during the hoisting process. It is convenient for on-site construction, shortens the construction period, and does not require large-tonnage hoisting equipment. Summary of the invention

[0004] The present invention aims to introduce a combined firebox lining, comprising: an upper head section, a lower head section, refractory materials, an end plate I, a pressure measuring pipe, a temperature measuring pipe, an upper middle section, a lower middle section, an explosion-proof port, a heat-insulating plate, a ceramic fiber folding block, a curing agent, an upper tail section, a lower tail section, an end plate II, a support, a nut, and an anchor bolt, characterized in that: the firebox is a circular box body composed of a head section, a plurality of middle sections and a tail section, each of which is divided into an upper and a lower section; the head section is composed of an upper head section, a lower head section and an end plate I; the smoke inlet is located in the tangent direction of the bottom of the lower head section, a temperature measuring pipe is provided at the inlet, and a pressure measuring pipe is provided opposite to the smoke; the end plate I is located at the end face of the head section; the middle section is composed of a plurality of upper middle sections and; there is an upper middle section in the middle of the firebox. The section is provided with an explosion-proof opening; the tail section is composed of an upper tail section, a lower tail section and an end plate II; the end plate II is located at the end face of the tail section; the lining of the fire box is composed of an insulation board, a refractory material, a ceramic fiber folding block, a curing agent and an anchor bolt; the lining of the lower head section adopts a combination of an insulation board and a refractory material, and the lining of other parts adopts a combination of an insulation board, a ceramic fiber folding block, an anchor bolt and a curing agent; after the ceramic fiber folding block is installed, the surface is sprayed with a curing agent to prevent erosion; the ceramic fiber folding block is pre-embedded with an anchor bolt, and during installation, the anchor bolt passes through the insulation board and the shell, is fixed with a nut and spot-welded on the shell; the head, middle and lower tail shells all have supports connected to the on-site foundation; the various parts and sections are connected with bolts.

[0005] The lining assembly method of the firebox effectively solves the installation difficulties caused by excessive volume and weight, and solves the problem of fragile refractory materials during installation. The anchor bolts of the lining are pre-buried in the ceramic fiber folding block. During installation, it is only necessary to extend the thread of the anchor bolt out of the shell and fix it with a nut outside the firebox.

[0006] The design points of the present invention are:

[0007] 1. Reduce the weight of the firebox and change the lining material and structure;

[0008] 2. Facilitate on-site installation and reduce construction labor intensity;

[0009] The beneficial effects of the present invention are:

[0010] 1. Only the refractory material needs to be made in the lower section, and the other refractory layers are all made by spraying the curing agent with ceramic fiber folded blocks, eliminating the construction difficulties caused by on-site refractory material making;

[0011] 2. It eliminates the hidden danger of refractory materials breaking during the hoisting process;

[0012] 3. It saves a lot of manpower and the rental of large-tonnage lifting equipment, improves production efficiency and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Structural schematic diagram of the present invention

[0014] Figure 2 The present invention Figure 1 AA section diagram

[0015] Markings in the figure: 1.1-upper head section, 1.2-lower head section, 1.3-refractory material, 1.4-end plate I, 1.5-pressure measuring pipe, 1.6-temperature measuring pipe, 2.1-upper middle section, 2.2-lower middle section, 2.3-explosion-proof port, 3.1-insulation board, 3.2-ceramic fiber folding block, 3.3-curing agent, 4.1-upper tail section, 4.2-lower tail section, 4.3-end plate II, 5.0-support, 6-nut, 7-anchor bolt. DETAILED DESCRIPTION

[0016] A combined firebox lining comprises: an upper head section 1.1, a lower head section 1.2, a refractory material 1.3, an end plate I 1.4, a pressure measuring pipe 1.5, a temperature measuring pipe 1.6, an upper middle section 2.1, a lower middle section 2.2, an explosion-proof port 2.3, an insulation board 3.1, a folding block 3.2, a curing agent 3.3, an upper tail section 4.1, a lower tail section 4.2, an end plate II 4.3, a support 5.0, a nut 6, and an anchor bolt 7.

[0017] Specific implementation process:

[0018] ① The shells of each section of the firebox are manufactured and the anchor nails are welded in the factory;

[0019] ② After the various parts of the firebox are transported to the site, first connect the lower head section 1.2, the lower middle section 2.2 and the lower tail section 4.2 together, and install them on the foundation through the lower section supports 5.0;

[0020] ③ The lower part of each firebox is laid with an insulation board 3.1, the lower head section 1.2 is made of refractory material 1.3, and the lower middle section 2.2 and the lower tail section 4.2 are installed with ceramic fiber folding blocks 3.2;

[0021] ④ The upper part of each firebox is laid with insulation board 3.1 and ceramic fiber folding block 3.2 on the site platform;

[0022] ⑤ Spray curing agent 3.3 on the surface of ceramic fiber folding block 3.2;

[0023] ⑥After the dryer drum is installed in place, buckle the upper part of the firebox onto the corresponding lower part;

[0024] ⑦ Adjust the gap between each section, seal the joints of each section with ceramic fiber pads and then connect them together with bolts;

[0025] ⑧ Check whether the sealing parts, dimensions and appearance meet the requirements. If qualified, tighten the fasteners again as required.

Claims

1. A combined firebox liner, comprising: include: An upper head section (1.1), a lower head section (1.2), refractory material (1.3), an end plate I (1.4), a pressure measuring pipe (1.5), a temperature measuring pipe (1.6), an upper middle section (2.1), a lower middle section (2.2), an explosion-proof port (2.3), an insulation board (3.1), a ceramic fiber folding block (3.2), a curing agent (3.3), an upper tail section (4.1), a lower tail section (4.2), an end plate II (4.3), a support (5.0), a nut (6), and an anchor bolt (7), characterized in that: the fire box is a circular box body composed of a head section, a plurality of middle sections and a tail section, each of which is divided into an upper and a lower section; the head section is composed of an upper head section (1.1), a lower head section (1.2) and an end plate I (1.4); the smoke inlet is located in the tangent direction of the bottom of the lower head section (1.2), a temperature measuring pipe (1.6) is provided at the inlet, and a pressure measuring pipe (1.5) is provided opposite to the smoke; the end plate I ( 1.4) is located at the end face of the head; the middle part is composed of a plurality of upper middle sections (2.1) and lower middle sections (2.2); there is an upper middle section (2.1) with an explosion-proof opening (2.3) in the middle of the firebox; the tail part is composed of an upper tail section (4.1), a lower tail section (4.2) and an end plate II (4.3); the end plate II (4.3) is located at the end face of the tail part; the lining of the firebox is composed of a thermal insulation board (3.1), refractory materials (1, 3), a ceramic fiber folding block (3.2), a curing agent (3.3) and an anchor bolt (7); the lining of the lower head section (1.2) is composed of a thermal insulation board (3.1) and a refractory material (1.3), and the lining of other parts is composed of a thermal insulation board (3.1), a ceramic fiber folding block (3.2), an anchor bolt (7) and a curing agent (3.3); after the ceramic fiber folding block (3.2) is installed, the surface is sprayed with an anti-scouring curing agent (3.3).

2. A combined firebox lining according to claim 1, characterized in that: An anchor bolt (7) is embedded in the ceramic fiber folding block (3.2), and the anchor bolt (7) passes through the insulation board (3.1) and the shell, is fixed with a nut (6), and is spot-welded to the shell.

3. A combined firebox liner according to claim 1, characterized in that: The head, middle and tail lower shells are all provided with supports (5.0) connected to the on-site foundation; each part and section is connected with bolts.

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