Combined fire box lining

Abstract

The utility model discloses a combined fire box liner which is recombined and adopts a new material to replace a refractory material, that is to say, 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 utility model 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 accompanying dryers is a circular box consisting of a head, several middle sections, and a tail. The entire box is divided into an upper and lower box. Anchor nails are welded to the box shell and lined with insulation board and refractory material. During on-site installation, the lower box shell is first installed on the foundation, and then the insulation board and refractory material are laid. The upper box shell is then covered with insulation board and refractory material on the platform. After the dryer drum is installed, it is assembled with the lower box shell. The problems are: the firebox is large and heavy, and the internal refractory material accounts for three-fifths of the total weight. This makes installation difficult and requires large lifting equipment. Due to the thick refractory layer, it is easily squeezed and crushed during installation, or cracks are generated internally, which are not visible from the outside. As a result, the internal cracks expand during operation, causing high-temperature flue gas to directly contact the outer shell, resulting in red spots on the shell surface or burn-through.

[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 part of the head that is subject to high-temperature impact is still composed of insulation board and refractory materials, and 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 lifting process. It is convenient for on-site construction and shortens the construction period. No large-tonnage lifting equipment is required. Summary of the Invention

[0004] The utility model aims to introduce a combined firebox lining, including: 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 preservation 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 composed of a head section, several middle sections and a tail section, each of which is divided into an upper and 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 tangential 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 several upper and middle sections and; there is an upper The middle 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 fire box lining is composed of a thermal insulation board, refractory materials, ceramic fiber folding blocks, a curing agent and anchor bolts; the lining of the lower head section adopts a combination of thermal insulation board and refractory materials, and the lining of other parts adopts a combination of thermal insulation board, ceramic fiber folding blocks, anchor bolts and curing agents; after the installation of the ceramic fiber folding blocks, the surface is sprayed with a curing agent to prevent erosion; the ceramic fiber folding blocks are pre-embedded with anchor bolts, and during installation, the anchor bolts pass through the thermal insulation board and the shell and are fixed with nuts and spot welded to 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 the installation process. The anchor bolts of the lining are pre-embedded 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 this utility model 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 made of ceramic fiber folded blocks sprayed with curing agent, eliminating the construction difficulties caused by on-site refractory material making;

[0011] 2. Eliminate 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 1Schematic diagram of the structure of the utility model

[0014] Figure 2 This utility model Figure 1 Schematic diagram of the cross section at AA

[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 vent, 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 includes: 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] ①The shell of each section of the firebox is manufactured and the anchor nails are welded in the factory;

[0019] ② After the firebox parts 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] ③Insulation board 3.1 is laid on the lower half of each firebox, refractory material 1.3 is cast on the lower head section 1.2, and ceramic fiber folding blocks 3.2 are installed on the lower middle section 2.2 and the lower tail section 4.2;

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

[0022] ⑤Spray 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 gaps between the sections, seal the joints of the sections 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: Upper head section (1.1), lower head section (1.2), refractory material (1.3), end plate I (1.4), pressure measuring pipe (1.5), temperature measuring pipe (1.6), upper middle section (2.1), lower middle section (2.2), explosion-proof port (2.3), insulation board (3.1), ceramic fiber folding block (3.2), curing agent (3.3), upper tail section (4.1), lower tail section (4.2), end plate II (4.3), support (5.0), nut (6), anchor bolt (7), characterized in that: the fire box is a circular box body consisting of a head, several middle sections and a tail section, each of which is divided into upper and lower sections; 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 tangential 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 several 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 fire box; 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 fire box lining is composed of an 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 a combination of an insulation board (3.1) and a refractory material (1.3), and the lining of other parts is a combination of an 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. The 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. The combined firebox lining 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; and the parts and sections are connected with bolts.

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