阅读说明：本技术 一种船台滑道石蜡回收方法 (Method for recovering paraffin from slipway ) 是由 刘进旗 张志宏 王云飞 丁佩磊 蔡怀建 于 2020-05-22 设计创作，主要内容包括：本发明属于船台废蜡回收技术领域。一种船台滑道石蜡回收方法,包括以下步骤：(1)铲除并收集船台滑道上的废蜡；(2)将步骤(1)收集的废蜡通投入提炼蜡炉(4)内,进行熔蜡提炼,熔蜡提炼温度控制在180-190℃,熔蜡提炼时间3-4H,提炼蜡炉炉体内液态回收蜡自然冷却至100-130℃,渣质沉淀至提炼蜡炉去渣质层；(3)提炼蜡炉炉体内液态回收蜡利用冷却工装进行冷却。本发明提高了废蜡回收率,大大节约了材料消耗成本。(The invention belongs to the technical field of recovery of shipway waste wax. A method for recovering paraffin on slipways comprises the following steps: (1) removing and collecting the waste wax on the slipway; (2) putting the waste wax collected in the step (1) into a wax extraction furnace (4) for wax melting extraction, controlling the temperature of the wax melting extraction to be 190 ℃, the time of the wax melting extraction to be 3-4H, naturally cooling the liquid recovered wax in the furnace body of the wax extraction furnace to be 100-130 ℃, and precipitating slag substances to a slag removing layer of the wax extraction furnace; (3) liquid recovered wax in the furnace body of the wax refining furnace is cooled by a cooling tool. The invention improves the recovery rate of the waste wax and greatly saves the material consumption cost.)

1. A method for recovering paraffin on slipways is characterized by comprising the following steps:

(1) removing and collecting the waste wax on the slipway;

(2) putting the waste wax collected in the step (1) into a wax extraction furnace (4) for wax melting extraction, controlling the temperature of the wax melting extraction to be 190 ℃, the time of the wax melting extraction to be 3-4H, naturally cooling the liquid recovered wax in the furnace body of the wax extraction furnace to be 100-130 ℃, and precipitating slag substances to a slag removing layer of the wax extraction furnace;

(3) liquid recovered wax in the refining wax furnace body is cooled and recovered by a cooling tool.

2. The method for recovering the paraffine of the slipway according to the claim 1, which is characterized in that the step (1) utilizes an iron shovel (1) to shovel the waste paraffine on the slipway, and the iron shovel (1) comprises an upright rod (1-3), a connecting rod (1-2) and a shovel blade (1-1) which are sequentially arranged from top to bottom.

3. The slipway paraffin recovery method according to claim 1 or 2, characterized in that the refining wax furnace (4) in the step (2) comprises furnace bodies (4-9), furnace bottoms (4-10), furnace covers (5), ignition plates (6) and ignition plate seats (7);

the furnace body (4-9) is connected with the furnace bottom (4-10), the middle of the furnace bottom (4-10) is high, and the periphery of the furnace bottom is low, and supporting legs (4-13) are arranged at the bottom of the furnace bottom (4-10); a furnace cover (5) is arranged on the furnace body (4-9);

a chimney (4-1) is arranged in the center of the furnace body (4-9), the chimney (4-1) penetrates through the furnace body (4-10), and the upper end of the chimney (4-1) extends out of the furnace cover (5); the chimney (4-1) is connected with the inner side wall of the furnace body (4-9) through a reinforcement (4-7) arranged in the radial direction;

the upper part of the furnace body (4-9) is provided with a feeding hole (4-3), the lower part of the furnace body (4-9) is provided with a liquid wax discharge valve (4-12), an impurity discharge valve (4-16) and a thermometer seat (4-11), the liquid wax discharge valve (4-12) is higher than the impurity discharge valve (4-16), and the thermometer seat (4-11) is provided with a thermometer;

a fire plate seat (7) is arranged below the furnace bottoms (4-10), and a fire plate (6) is arranged on the fire plate seat (7).

4. The slipway paraffin recovery method according to claim 1, characterized in that the ignition plate (6) comprises an outer ring pipe (6-1), an inner ring pipe (6-2) and a gas pipe (6-3), wherein the outer ring pipe (6-1) and the inner ring pipe (6-2) are concentrically arranged;

one end of the gas pipe (6-3) is connected with an acetylene branch pipe (6-9) and a compressed air branch pipe (6-5), the other end of the gas pipe (6-3) is connected with the inner ring pipe (6-1) through a first gas transmission branch distribution pipe (6-7), and the inner ring pipe (6-1) and a second gas transmission branch distribution pipe (6-8) are connected with the outer ring pipe (6-1);

air outlets (6-10) are arranged on the outer ring pipe (6-1) and the inner ring pipe (6-2).

5. The slipway paraffin recovery method according to claim 1, characterized in that the ignition coil base (7) is of a grid structure and comprises a plurality of first grid sub-pieces (7-3) arranged in parallel and a plurality of second grid sub-pieces (7-1) arranged in parallel and arranged on a flat steel (7-3), wherein the first grid sub-pieces (7-3) and the second grid sub-pieces (7-1) are arranged vertically;

the upper circumference of the ignition plate seat (7) is provided with a backing plate (7-2) which is used for installing the ignition plate (6) and adjusting the height of the ignition plate (6).

6. The slipway paraffin recovery method according to claim 1, characterized in that the distance between the ignition plate (6) and the lowest part of the furnace bottom (4-10) is 130-150 mm.

7. The method for recovering the paraffine of the slipway according to claim 4, characterized in that the end part of the gas transmission pipe (6-3) connected with the inner ring pipe (6-2) is a 90-degree elbow pipe, the elbow pipe is vertically arranged, four first gas transmission branch distribution pipes (6-7) are uniformly distributed on the side wall of the elbow pipe, the first gas transmission branch distribution pipes (6-7) are obliquely arranged upwards, and the top end of the elbow pipe is provided with a sealing plate (6-7).

8. The slipway paraffin recovery method according to claim 6, characterized in that the number of the second gas transmission branch distribution pipes (6-8) is four, the second gas transmission branch distribution pipes (6-8) are radially and uniformly distributed, and the second gas transmission branch distribution pipes (6-8) and the first gas transmission branch distribution pipes (6-7) are arranged in a superposition manner.

9. The slipway paraffin recovery method according to claim 1, characterized in that the cooling tool (2) comprises a frame and a three-proof cloth placed on the frame, wherein the periphery of the three-proof cloth extends out of the square frame;

the frame is of a bottomless structure and comprises a first surrounding wall (2-1), a second surrounding wall (2-2), a third surrounding wall (2-3) and a fourth surrounding wall (2-4), and fillets are arranged between adjacent surrounding walls;

the frame is made of iron.

10. The slipway paraffin recovery method according to claim 1, characterized in that the furnace cover (5) is a truncated cone structure without top and bottom, a chimney mounting hole (5-3) is formed at the top of the furnace cover (5), vent pipes (5-2) are uniformly distributed on the furnace cover (5), the vent pipes (5-2) are horizontally arranged, the tail ends of the vent pipes (5-2) are inclined upwards, and lifting lugs (5-1) are arranged on the furnace cover (5).

Technical Field

The invention belongs to the technical field of a high-neck flange for a ship, and particularly relates to a method for comparing a pipe with the high-neck flange.

Background

Because the paraffin on the original ship launching back slide way and the slide plate is cleaned by baking with fire, a large amount of smoke is generated in the cleaning process, the molten wax flows into the river to cause water body pollution, the solid waste wax treatment procedure is complicated and the hazardous waste treatment cost is high, the waste wax treatment is about 5800 yuan/ton, the paraffin consumption for launching each time is about 7.6 tons, the material cost is about 76000 yuan, the material consumption cost for launching each time is about 120000 yuan, and the consumption reduction and cost reduction are urgent, so the waste wax is recycled and refined in China through technical research and development and technical innovation.

Disclosure of Invention

The invention aims to provide a method for recovering the paraffine of the slipway, which improves the recovery rate of the waste paraffine and greatly saves the material consumption cost.

The invention aims to realize the technical scheme that the method for recovering the paraffine of the slipway is characterized by comprising the following steps of:

(1) removing and collecting the waste wax on the slipway;

(2) putting the waste wax collected in the step (1) into a wax refining furnace for wax melting refining, controlling the temperature of the wax melting refining to be 190-;

(3) liquid recovered wax in the furnace body of the wax refining furnace is cooled by a cooling tool.

Preferably, the step (1) utilizes an iron shovel to shovel off the waste wax on the slipway, and the iron shovel comprises a vertical rod, a connecting rod and shovel pieces which are sequentially arranged from top to bottom.

Preferably, the wax refining furnace in the step (2) comprises a furnace body, a furnace bottom, a furnace cover, a firing plate and a firing plate seat;

the furnace body is connected with the furnace bottom, the middle of the furnace bottom is high, the periphery of the furnace bottom is low, and supporting legs are arranged at the bottom of the furnace bottom; a furnace cover is arranged on the furnace body;

a chimney is arranged in the center of the furnace body and penetrates through the furnace body, and the upper end of the chimney extends out of the furnace cover; the chimney is connected with the inner side wall of the furnace body through a reinforcing piece arranged in the radial direction;

the upper part of the furnace body is provided with a feed inlet, the lower part of the furnace body is provided with a liquid wax discharge valve, an impurity discharge valve and a thermometer seat, the liquid wax discharge valve is higher than the impurity discharge valve, and the thermometer seat is provided with a thermometer;

the lower part of the furnace bottom is provided with a fire plate seat, and the fire plate seat is provided with a fire plate.

Preferably, the ignition disc comprises an outer ring pipe, an inner ring pipe and a gas transmission pipe, wherein the outer ring pipe and the inner ring pipe are concentrically arranged;

one end of the gas pipe is connected with an acetylene branch pipe and a compressed air branch pipe, the other end of the gas pipe is connected with the inner ring pipe through a first gas transmission branch distribution pipe, and the inner ring pipe and a second gas transmission branch distribution pipe are connected with the outer ring pipe;

air outlets are arranged on the outer ring pipe and the inner ring pipe.

Preferably, the ignition plate seat is of a grid structure and comprises a plurality of first grid sub-pieces arranged in parallel and a plurality of second grid sub-pieces arranged in parallel and arranged on the flat steel, and the first grid sub-pieces and the second grid sub-pieces are arranged vertically;

the upper circumference of the ignition plate seat is provided with a backing plate which is used for installing the ignition plate and adjusting the height of the ignition plate.

Preferably, the ignition plate is 150mm away from the lowest part of the furnace bottom by 130-.

Preferably, the end part of the gas transmission pipe connected with the inner ring pipe is a 90-degree bent pipe, the bent pipe is vertically arranged, four first gas transmission branch distribution pipes are uniformly distributed on the side wall of the bent pipe, the first gas transmission branch distribution pipes are arranged in an upward inclined mode, and a sealing plate is arranged at the top end of the bent pipe.

Preferably, the number of the second gas transmission branch distribution pipes is four, the second gas transmission branch distribution pipes are uniformly distributed in the radial direction, and the second gas transmission branch distribution pipes and the first gas transmission branch distribution pipes are arranged in a superposition manner.

Preferably, the cooling tool comprises a frame and three-proofing cloth arranged on the frame, and the periphery of the three-proofing cloth extends out of the square frame; the frame is of a bottomless structure and comprises a first surrounding wall, a second surrounding wall, a third surrounding wall and a fourth surrounding wall, and the adjacent surrounding walls are arranged in a fillet mode;

the frame is made of iron.

Preferably, the furnace cover is of a top-free and bottom-free round platform structure, a chimney mounting hole is formed in the top of the furnace cover, air permeable pipes are uniformly distributed on the furnace cover and horizontally arranged, the tail ends of the air permeable pipes are inclined upwards, and lifting lugs are arranged on the furnace cover.

Compared with the prior art, the invention has the following beneficial effects:

firstly, the problem of limited site is solved, and the cooling tool can be directly laid on the ground;

secondly, the recycling cost is reduced, and the unused iron frame and the three-proofing cloth can be collected and utilized;

thirdly, the invention can not generate field pollution, and because the liquid recovered paraffin is not directly contacted with the ground, the extracted paraffin has less impurities, thereby being convenient for recycling

Fourth, through calculation, the recovery rate of the waste wax is about 60 percent at present, and the average material-saving consumption cost of each ship is about 72000 yuan.

Drawings

FIG. 1 is a general layout of a wax refining furnace according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

FIG. 4 is a cross-sectional view taken along line C-B of FIG. 1;

FIG. 5 is a cross-sectional view taken in the direction D-D of FIG. 1;

FIG. 6 is a schematic structural diagram of a furnace body of the wax refining furnace of the present invention;

FIG. 7 is a top view of the refining wax furnace body of the present invention;

FIG. 8 is a schematic view of the furnace lid of the wax refining furnace according to the present invention;

FIG. 9 is a top view of the furnace lid of the wax refining furnace of the present invention;

FIG. 10 is a schematic view of the fire plate of the wax refining furnace of the present invention;

FIG. 11 is an enlarged view of the portion G of FIG. 10;

FIG. 12 is a top plan view of the wax refining furnace fire tray of the present invention;

FIG. 13 is a schematic view of the structure of the ignition coil base of the wax refining furnace of the present invention;

FIG. 14 is a schematic structural view of the shovel tooling of the present invention;

FIG. 15 is a cross-sectional view taken in the direction E-E of FIG. 14;

FIG. 16 is a sectional view in the direction F-F in FIG. 14;

fig. 17 is a schematic structural view of the cooling tool of the present invention.

Detailed Description

The present invention is further illustrated by the following figures and examples, which are provided for the purpose of illustration only and are not intended to limit the scope of the present invention.

As shown in fig. 1 to 17, a method for recovering paraffin from slipways comprises the following steps:

1, removing and collecting waste wax on a slipway;

2, putting the waste wax collected in the step 1 into a wax extraction furnace 4 for wax melting extraction, controlling the temperature of the wax melting extraction to be 190 ℃ in temperature range, controlling the time of the wax melting extraction to be 3-4H, naturally cooling the liquid recovered wax in the furnace body of the wax extraction furnace to be 130 ℃ in temperature range, and depositing slag substances to a slag removing layer of the wax extraction furnace;

and 3, cooling the liquid recovered wax in the wax refining furnace body by using a cooling tool.

Step 1, a shovel 1 is used for shoveling waste wax on a slipway, and the shovel 1 comprises upright rods 1-3, connecting rods 1-2 and shovel pieces 1-1 which are sequentially arranged from top to bottom.

The wax refining furnace 4 in the step 2 comprises a furnace body 4-9, a furnace bottom 4-10, a furnace cover 5, an ignition plate 6 and an ignition plate seat 7.

The furnace body 4-9 is connected with the furnace bottom 4-10, the middle of the furnace bottom 4-10 is high, the periphery is low, and the included angle between the furnace bottom 4-10 and the side wall of the furnace body is preferably 75-85 degrees. The bottom of the furnace bottom 4-10 is provided with supporting legs 4-13; the furnace body 4-9 is provided with a furnace cover 5.

A chimney 4-1 is arranged in the center of the furnace body 4-9, the chimney 4-1 penetrates through the furnace body 4-10, and the upper end of the chimney 4-1 extends out of the furnace cover 5; the chimney 4-1 is connected with the inner side wall of the furnace body 4-9 through a reinforcing piece 4-7 arranged in the radial direction. The top of the chimney 4-1 is provided with an oblique angle, preferably 75 degrees.

The upper part of the furnace body 4-9 is provided with a feed inlet 4-3, the feed inlet 4-3 is of a channel steel structure, and the channel steel structure is provided with a toggle plate 4-5. The lower part of the furnace body 4-9 is provided with a liquid wax discharge valve 4-12, an impurity discharge valve 4-16 and a thermometer seat 4-11, the liquid wax discharge valve 4-12 is higher than the impurity discharge valve 4-16, and a thermometer is arranged on the thermometer seat 4-11. The bottom of the furnace body 4-9 forms a slag layer of the wax refining furnace.

An ignition plate seat 7 is arranged below the furnace bottom 4-10, and an ignition plate 6 is arranged on the ignition plate seat 7. A chassis 4-14 and a chassis fence 4-15 are arranged below the furnace bottom 4-10. The upper part of the furnace body is provided with a lifting lug 4-4.

The upper part of the furnace body is provided with a furnace body external reinforcing ring 4-2. A chimney reinforcing ring 4-6 is welded at the joint of the chimney 4-1 and the connecting piece 4-7. The joint of the connecting piece 4-7 and the inner side wall of the furnace body 4-10 is welded with a furnace body external reinforcing ring 4-8.

The ignition plate 6 comprises an outer ring pipe 6-1, an inner ring pipe 6-2 and a gas transmission pipe 6-3, wherein the outer ring pipe 6-1 and the inner ring pipe 6-2 are concentrically arranged.

One end of the gas pipe 6-3 is connected with an acetylene branch pipe 6-9 and a compressed air branch pipe 6-5, the other end of the gas pipe 6-3 is connected with an inner ring pipe 6-1 through a first gas transmission branch distribution pipe 6-7, and the inner ring pipe 6-1 and a second gas transmission branch distribution pipe 6-8 are connected with an outer ring pipe 6-1.

The angle between the central axis of the acetylene branch pipe 6-9 and the central axis of the compressed air branch pipe 6-5 is preferably 20 deg..

The outer ring pipe 6-1 and the inner ring pipe 6-2 are both provided with an air outlet 6-10. The included angle of the central axes of the radial adjacent air outlet holes on the inner ring tube 6-2 is 15 degrees. The included angle of the central axes of the radial adjacent air outlet holes on the outer ring tube 6-1 is 30 degrees.

The ignition plate seat 7 is of a grid structure and comprises a plurality of first grid sub-pieces 7-3 arranged in parallel and a plurality of second grid sub-pieces 7-1 arranged on the flat steel 7-3 in parallel, and the first grid sub-pieces 7-3 and the second grid sub-pieces 7-1 are arranged vertically;

the ignition plate seat 7 is circumferentially provided with a backing plate 7-2 which is used for installing the ignition plate 6 and adjusting the height of the ignition plate 6.

The distance between the ignition plate 6 and the lowest part of the furnace bottom 4-10 is 130 mm and 150 mm.

The end part of a gas pipe 6-3 connected with the inner ring pipe 6-2 is a 90-degree bent pipe, the bent pipe is vertically arranged, four first gas transmission branch distribution pipes 6-7 are uniformly distributed on the side wall of the bent pipe, the first gas transmission branch distribution pipes 6-7 are arranged in an upward inclined mode, and the top end of the bent pipe is provided with a sealing plate 6-7.

The number of the second gas transmission branch distribution pipes 6-8 is four, the second gas transmission branch distribution pipes 6-8 are uniformly distributed in the radial direction, and the second gas transmission branch distribution pipes 6-8 and the first gas transmission branch distribution pipes 6-7 are arranged in a superposition mode.

The cooling tool 2 comprises a frame and three-proofing cloth placed on the frame, and the periphery of the three-proofing cloth extends out of the square frame.

The frame is of a bottomless structure and comprises a first surrounding wall 2-1, a second surrounding wall 2-2, a third surrounding wall 2-3 and a fourth surrounding wall 2-4, and the adjacent surrounding walls are arranged in a fillet mode; the frame is made of iron.

The furnace cover 5 is of a truncated cone structure without a top and a bottom, a chimney mounting hole 5-3 is formed at the top of the furnace cover 5, vent pipes 5-2 are uniformly distributed on the furnace cover 5, the vent pipes 5-2 are horizontally arranged, the tail ends of the vent pipes 5-2 are upwards obliquely arranged, and lifting lugs 5-1 are arranged on the furnace cover 5.

The invention solves the problem of limited field, and the cooling tool can be directly laid on the ground; the invention reduces the recovery cost, and can utilize the collected iron frame and the collected three-proofing cloth; the invention can not generate field pollution, and the liquid recovered paraffin is not directly contacted with the ground, so that the extracted paraffin has less impurities and is convenient to recycle; through measurement and calculation, the recovery rate of the waste wax is about 60 percent at present, and the average material-saving consumption cost of each ship is about 72000 yuan.

The foregoing is only a preferred embodiment of the invention, and those skilled in the art will appreciate that various modifications can be made in the invention, which are within the scope of the invention as defined by the appended claims.