Installation method of coke side furnace protection equipment for in-situ overhaul and online lap joint transformation of coke oven

Abstract

The invention relates to an installation method of coke-side furnace protection equipment for on-line lap joint transformation of coke oven in-situ overhaul, which comprises the following steps of: a, transferring a coke-side furnace door frame and furnace door furnace protection equipment from the ground to a coke oven machine-side operation table by utilizing a travelling crane in a coke oven masonry greenhouse and a long-stroke electric hoist; b, the furnace protection equipment is transferred to the furnace top from the machine side operation table through a long-stroke electric hoist; c, transferring the furnace protection equipment from the furnace top to a coke side operation table by utilizing a customized short-stroke compact electric hoist; and d, installing a coke side furnace door frame and furnace door protection equipment in place by utilizing a customized short-stroke electric hoist. The installation method of the coke side furnace protection equipment for online lap joint transformation in the in-situ overhaul of the coke oven has the advantages that the short-stroke compact electric hoist is an ultra-short-stroke compact electric hoist and can adapt to the installation of the coke side furnace protection equipment under the condition that the distance between a coke side greenhouse stand column and a coke side furnace body is limited by taking the top of the coke oven as a transfer point.

Description

Technical Field

[0001] The present invention belongs to the technical field of metallurgical construction. Specifically, it is a method for in-situ major overhaul of coke ovens by adopting an online overlapping renovation mode when two or more coke ovens do not shut down simultaneously. Background Art

[0002] For coke ovens at the end of their campaign, the masonry ages, the refractory materials are damaged, and problems such as deformation, erosion, and perforation occur in the coke oven walls. The furnace condition deteriorates severely, resulting in difficult coke pushing during production. At the same time, as the furnace age increases, the furnace condition deteriorates, causing problems such as local leakage in front of the furnace, reduced sealing performance, aging and blockage of the furnace body heating system, and gas leakage, which seriously affect normal production and also the environment. Shutting down and renovating all two or more coke ovens will severely affect the coke production and coke oven gas volume in the plant area and have an impact on the subsequent production lines. In order to reduce the impact on subsequent production, an online overlapping in-situ major overhaul renovation mode for two or more coke ovens is adopted, that is, during the renovation of one coke oven, the adjacent coke oven groups operate normally. In this in-situ major overhaul mode, since the adjacent coke ovens and the coke quenching system operate normally and the coke quenching car on the coke side is always in operation, the coke side furnace protection equipment of the coke oven to be overhauled in-situ cannot be installed in the conventional way. At the same time, to ensure the normal passage of the coke quenching car track during the major overhaul, the coke side columns of the masonry shed for the in-situ major overhaul of the coke oven need to be arranged on the flue, resulting in more limited space on the coke side when installing the coke side furnace protection equipment in the shed. The conventional installation method of the coke side furnace protection equipment cannot meet the requirements.

[0003] Therefore, the known installation methods of the coke side furnace protection equipment have the above-mentioned inconveniences and problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an installation method for the coke side furnace protection equipment in the in-situ major overhaul of coke ovens by online overlapping renovation.

[0005] To achieve the above purpose, the technical solution of the present invention is as follows: An installation method for the coke side furnace protection equipment in the in-situ major overhaul of coke ovens by online overlapping renovation. The coke quenching car of the coke oven is in a production operation state, and the space is limited due to the close distance between the coke side furnace protection equipment and the coke side shed columns. The conventional overhead crane electric hoist in the shed will not be able to meet the installation of the coke side furnace protection equipment, which affects the oven drying of the coke oven. Therefore, the general concept of the present invention includes the following steps: a. Using the conventional long-stroke electric hoist attached to the overhead crane in the masonry shed of the coke oven, the coke side furnace door frame and the furnace door protection equipment are transported from the ground to the coke oven machine side operation platform. b. Using the conventional long-stroke electric hoist attached to the overhead crane in the coke oven shed, the coke side furnace door frame and the furnace door protection equipment are transported from the machine side operation platform to the furnace top. c. Customize a short-stroke compact electric hoist in advance. Using the customized short-stroke compact electric hoist, reverse transport the coke-side furnace door frame and the furnace door protection equipment from the furnace top to the coke-side operating platform again. d. Using the short-stroke electric hoist customized for the coke oven shed crane, install the coke-side furnace door frame and the furnace door protection equipment in place.

[0006] The installation method of the coke-side furnace protection equipment for the in-situ overhaul and online lap transformation of the coke oven in the present invention can also be further realized by adopting the following technical measures.

[0007] In the foregoing method, the length of the fuselage cylinder of the short-stroke compact electric hoist is half of the length of the long-stroke electric hoist.

[0008] After adopting the above technical solution, the advantages of the installation method of the coke-side furnace protection equipment for the in-situ overhaul and online lap transformation of the coke oven in the present invention are as follows: The short-stroke compact electric hoist is an ultra-short-stroke compact electric hoist, which can adapt to the transfer point at the coke oven top, and solves the problem that during the in-situ overhaul of the coke oven using the online lap transformation mode, the coke-side quenching car operates normally, the coke oven shed columns are arranged in the middle of the coke-side flue, and the coke oven shed crane cannot normally install the coke-side furnace protection iron parts; the coke-side furnace protection iron parts are transported from the machine side to the coke-side operating platform through the furnace top transfer, and are hoisted and installed using the ultra-short-stroke compact electric hoist customized for the shed crane, which well solves the installation of the coke-side furnace protection equipment under the condition that the distance between the coke oven shed column and the coke-side furnace body is limited. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is the elevation layout diagram of the coke oven of the embodiment of the present invention; Figure 2 It is the plan layout diagram of the coke oven of the embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0010] The present invention will be further described in detail below in conjunction with the embodiments and their accompanying drawings.

[0011] Embodiment 1 Now please refer to Figure 1 and Figure 2, for the in-situ major overhaul of coke ovens using the online lapping transformation mode, the foundation of the coke oven body to be transformed and the track foundations of the pusher car and quenching car are reused, and the furnace lining refractory materials and the furnace protection equipment on both the machine side and coke side are updated. In this project, the in-situ major overhaul of the coke oven adopts the online lapping transformation mode for two coke ovens. When the first coke oven is transformed, the adjacent coke oven in the same oven group is in normal production. During the installation of the coke oven protection equipment, since the quenching car on the coke side and the supporting quenching system are in normal production, when installing the coke oven protection equipment for the in-situ major overhaul transformation, the lifting and hoisting machinery cannot be positioned on the coke side of the coke oven for equipment transfer. At the same time, to ensure the normal passage of the quenching car track during the major overhaul, the columns on the coke side of the masonry shed for the in-situ major overhauled coke oven need to be arranged on the flue, resulting in a more limited space on the coke side when installing the coke oven protection equipment in the shed, and the conventional installation method for the coke side protection equipment cannot meet the requirements.

[0012] When installing the coke oven protection equipment on the machine side, since the columns on the machine side of the shed are located outside the flue on the machine side of the coke oven, the distance between the coke oven protection equipment on the machine side and the columns on the machine side of the shed meets the hoisting conditions of the shed crane. That is, after the coke oven masonry is completed, the crane in the coke oven shed is used to hoist the furnace columns, protection plates, furnace door frames, furnace doors, operation platforms and other equipment in sequence. Under the normal production and operation state of the quenching car on the coke side, the conventional installation method cannot be used for installation in the limited space on the coke side.

[0013] The installation method of the coke oven protection equipment on the coke side for the in-situ major overhaul of the coke oven with online lapping transformation of the present invention is as follows. When the quenching car of the coke oven is in the production and operation state, the distance between the coke oven protection equipment on the coke side and the columns on the coke side of the shed is relatively close and the space is limited. The conventional electric hoist of the shed crane cannot meet the installation of the coke oven protection equipment on the coke side, which will affect the oven drying of the coke oven. Therefore, the following steps are adopted to achieve it: a. Use the coke oven to build the coke oven shed, and the crane in the coke oven shed is equipped with a conventional long-stroke electric hoist to transfer the furnace door frame and furnace door on the coke side to the operation platform on the machine side.

[0014] b. Use the crane in the coke oven shed equipped with a conventional long-stroke electric hoist to transfer the furnace door frame and the furnace protection equipment of the furnace door on the coke side to the furnace top.

[0015] c. Customize a short-stroke compact electric hoist. The length of the body cylinder of the short-stroke compact electric hoist is shorter than that of the long-stroke electric hoist. Use the customized short-stroke compact electric hoist to transfer the furnace door frame and the furnace protection equipment of the furnace door on the coke side to the operation platform on the coke side; the length of the body cylinder of the short-stroke compact electric hoist is half of the length of the body cylinder of the long-stroke electric hoist.

[0016] d. Use the customized short-stroke electric hoist of the coke oven shed crane to install the furnace door frame and the furnace protection equipment of the furnace door on the coke side in place.

[0017] Due to the coke quenching car of the coke oven being in the production operation state, the distance between the coke side furnace protection equipment and the columns of the coke side shed is relatively close and the space is limited. The conventional electric hoist of the shed traveling crane will not be able to meet the installation of the coke side furnace protection equipment, affecting the oven drying process. At the same time, using a compact short-stroke electric hoist, due to the limited stroke, it is also not possible to transfer the furnace protection equipment from under the furnace to the furnace top. Therefore, a long-stroke electric furnace protection is used to be responsible for transferring the furnace protection equipment, and a short-stroke compact electric hoist is used to be responsible for installing the coke side furnace protection equipment in the limited space, which well solves the problem of installing the coke side furnace protection equipment.

[0018] The present invention has substantial features and remarkable technical progress. The installation method of the coke side furnace protection equipment for the in-situ overhaul and online overlapping transformation of the coke oven of the present invention uses the furnace top of the coke oven as the transfer point, and solves the problem that under the in-situ overhaul and online overlapping transformation mode of the coke oven, the coke side quenching car is in normal production operation, the coke side shed columns are arranged in the middle of the coke side flue, and the coke oven shed traveling crane cannot normally install the coke side furnace protection iron parts; the coke side furnace protection iron parts are transferred to the coke side operation platform through the furnace top, and a customized ultra-short-stroke compact electric hoist of the shed traveling crane is used for hoisting and installation, which well solves the installation of the coke side furnace protection equipment under the condition that the distance between the coke side shed columns and the coke side furnace body is limited.

[0019] The installation method of the coke side furnace protection equipment for the in-situ overhaul and online overlapping transformation of the coke oven of the present invention has been actually applied in the installation project of the coke side furnace protection iron parts of the 6A coke oven during the in-situ overhaul transformation. The coke oven is a double-reheating top-loading coke oven with a carbonization chamber height of 6m. The online overlapping transformation method is adopted. When transforming the 6A coke oven, the adjacent 6B coke oven is in normal production state. During the installation process of the furnace body furnace protection iron parts, due to the normal production of the coke side dry quenching system and the quenching car, the coke side shed columns of the coke oven are located in the middle of the coke side flue, and the space between the coke side shed columns and the coke side furnace body is extremely limited. Therefore, when installing the coke side furnace protection iron parts, it is impossible to install them using the conventional electric hoist of the shed traveling crane. The installation method of the coke side furnace protection equipment for the in-situ overhaul and online overlapping transformation of the coke oven of the present invention solves the problem of installing the coke side furnace protection equipment of the coke oven and also ensures the normal oven drying node.

[0020] The above embodiments are only for illustrating the present invention and not for limiting the present invention. Those skilled in the relevant technical fields can also make various transformations or changes without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention and should be defined by each claim.

Claims

1. An installation method for the coke side furnace protection equipment in the on-site overhaul and online lap transformation of a coke oven, characterized in that , including the following steps: a. Use the conventional long-stroke electric hoist attached to the overhead crane in the coke oven masonry shed to transfer the coke-side oven door frame and oven door protection equipment from the ground to the coke oven machine-side operation platform; b. Use the conventional long-stroke electric hoist attached to the overhead crane in the coke oven shed to transfer the coke-side oven door frame and oven door protection equipment from the machine-side operation platform to the oven top; c. Customize a short-stroke compact electric hoist in advance. Use the customized short-stroke compact electric hoist to transfer the coke-side oven door frame and oven door protection equipment from the oven top to the coke-side operation platform again; d. Use the short-stroke electric hoist customized for the overhead crane in the coke oven shed to install the coke-side oven door frame and oven door protection equipment in place.

2. The installation method of the coke side furnace protection equipment for the in-situ major overhaul and online lapping transformation of the coke oven as described in claim 1, characterized in that, The body cylinder length of the short-stroke compact electric hoist is half of the body cylinder length of the long-stroke electric hoist.

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