CN2172768Y

CN2172768Y - Deploymerizing still for extracting gasoline and diesel oil from waste plastic oil and vegetable oil foot

Info

Publication number: CN2172768Y
Application number: CN93234583U
Authority: CN
Inventors: 李强
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-08-28
Filing date: 1993-08-28
Publication date: 1994-07-27
Anticipated expiration: 2003-08-28

Abstract

The utility model belongs to the technical field of extracting fuel from waste plastic, and relates to a depolymerizing kettle for extracting gasoline and diesel oil from the waste plastic, waste oil and waste vegetable oil foot. The utility model comprises the depolymerizing kettle which is composed of a kettle body, a molecular sieve partition board, a refluxing device, a heat conducting pipe, a material uniformly distributing pipe, a plurality of instruments and a valve. (The depolymerizing kettle can also be used as a back refining kettle, a catalyzing kettle.) The kettle can be additionally matched with other facilities to form a production device, and under process conditions of proper temperature, substances of polyethylene, polypropylene, polystyrene, etc. can be cracked into the gasoline and the diesel oil in high temperature. The utility model has the advantages of compact structure, low manufacturing cost, convenient operation and maintenance, and high cracking rates.

Description

Deploymerizing still for extracting gasoline and diesel oil from waste plastic oil and vegetable oil foot

The utility model belongs to waste material extraction fuel technology field, relates to a kind of depolymerization still of using with plastic waste, waste oil, waste vegetable oil pin refinement vapour, diesel oil.

Along with the develop rapidly of plastics industry, plastics become obligato novel material among the human lives, follow with it useless mould to pollute grow with each passing day, people just are being devoted to utilize useless refinement vapour, diesel oil such as mould to make it to turn waste into wealth.General method is with the depolymerization of plastic waste high temperature, catalytic pyrolysis and fractionation, thus obtain vapour, diesel oil.The high temperature depolymerization is carried out in the depolymerization still, general depolymerization still is to put into plastic waste in the still, in the bottom heating, at high temperature, plastic waste fusion depolymerization, this depolymerization still is because the concentrated heating in the bottom, it is inhomogeneous that material in the depolymerization still is heated, and place, bottom temperature is too high to make plastic waste charing, coking, frequent blowing out cleaning, be difficult to works better, and the transformation efficiency that makes plastic waste be converted to vapour, diesel oil reduces.

The purpose of this utility model be will for extract with plastic waste, waste oil, waste vegetable oil pin in vapour, the diesel production separate collecting process provide a kind of simple in structure, heating surface area big, be heated evenly, the depolymerization still of quick heating.

The purpose of this utility model realizes with the following methods.This depolymerization still comprises kettle, the even stringing of material, the manhole plate at kettle top, the blow-off pipe of autoclave body bottom, uniform heat pipe is arranged in the kettle, on the even stringing of material, the molecular sieve dividing plate is arranged, at the kettle middle part mink cell focus freshening feed-pipe is arranged, the kettle shell upper has kettle to be connected upper backup pad with burner hearth, the kettle outer casing underpart has kettle to be connected lower supporting plate with burner hearth, at the kettle top gas reactor vapor pipe is arranged.During use, the depolymerization still is installed on the process furnace, the intravital heating tube of still communicates with the burner hearth of process furnace, and the kettle shell between the hearth wall of process furnace and the upper backup pad of kettle and the lower supporting plate is formed the heating fire bed.The utility model will be further described below in conjunction with the embodiment accompanying drawing.

Fig. 1 the utility model structural front view;

Fig. 2 is the vertical view of Fig. 1.

Among the figure: the 1-kettle, the 2-material is spared stringing, 3-heat pipe, 4-molecular sieve dividing plate, 5-gas reactor vent pipe, gas outlet pipe in the 6-return channel cylindrical shell, 7-return channel, 8-return channel coagulation liquid return line, the 9-kettle is connected upper backup pad with burner hearth, 10-mink cell focus freshening feed-pipe, 11-thermocouple temperature measurement pipe, the 12-blow-off pipe, the 13-manhole, 14-safety valve, 15-tensimeter, the 16-thermometer, 17-kettle and burner hearth lower supporting plate, 18-process furnace, 19-hearth wall, the 20-interlayer, the 21-smoke discharge tube.

The gas reactor vent pipe (5) of this depolymerization still is connected with return channel cylindrical shell (6), and return channel cylindrical shell (6) bottom has return channel coagulation liquid return line (8) to be connected with kettle (1), and gas outlet pipe (7) in the return channel is arranged at return channel cylindrical shell (6) top.The aperture that some φ 6mm spared stringing (2) bottom and have by material is convenient to material and is evenly fallen in the still, and material is spared the outer termination charging machine such as the extruding machine of stringing (2).Whole depolymerization still is mounted on the process furnace (18), be supported on the process furnace by lower supporting plate (17), form interlayer (21) between hearth wall of process furnace (19) and kettle (1) shell, smoke discharge tube (21) links to each other with equipment such as cracking still that next procedure need be heated.

To be that example describes the working process of this utility model in detail as follows to extract vapour, diesel oil with plastic waste below:

Plastic waste enters the even stringing (2) of material through extruding machine, aperture by the pipe end falls in the kettle (1) equably, process furnace (18) burning, hot gas is heated inside and outside to the multi-faceted integral body of depolymerization still simultaneously through heat pipe (3) and interlayer (20) quirk, plastics depolymerization at high temperature evaporation (waste oil, the waste vegetable oil pin also is like this), vaporized gas enters gas reactor vapor pipe (5) through molecular sieve dividing plate (4), enter return channel cylindrical shell (6) again, the molecule that a part fails to reach the depolymerization requirement be subjected to the temperature effect cohesion for liquid after return line (8) is back to cracking again in the still, discharge and enter next procedure (as the catalytic pyrolysis still) and handle and meet the requirements of gaseous molecular gas outlet pipe (7) in return line.Manhole (13) is to be beneficial to the operator to go into to clean in the still etc. when quitting work, safety valve (14) can allow overvoltage gas discharge, tensimeter (16) can be observed still internal pressure situation at any time, kettle is connected setting up of upper backup pad (9) with burner hearth be to form kettle and hearth wall composition interlayer quirk in order to allow the top brick body of hearth wall (19) and kettle (1) coincide together, be beneficial to kettle is heated, mink cell focus freshening feed-pipe (10) is to return to depolymerization in the still for the mink cell focus that produces when extracting vapour, diesel oil.

Become sealed state in the utility model compact construction, equipment, with molecular sieve dividing plate, return channel, heat pipe, material uniform device be combined in one group, volume is little, function is complete, floor space is little.Material heats to being heated simultaneously inside and outside heat energy utilization rate height, interlayer quirk, the heat pipe energy in addition, contact area is big, be heated evenly difficult local superheating, the coking phenomenon of producing.Moreover charger such as extrusion molding function directly be connected with the depolymerization still, on the one hand material such as plastics preheated, and makes reinforced uninterruptedly on the other hand, guaranteed stopping property again.The utility model also can be used as freshening still, catalysis still.

This still is supporting other facility in addition, and forming production equipment can be vapour, diesel oil at Pintsch process with materials such as polyethylene, polypropylene, polystyrene under suitable temperature process condition.Have that structure is compact, cost is low, be convenient to operating maintenance, the advantage that cleavage rate is high.

Claims

1, a kind of plastic waste of using, waste oil, the waste vegetable oil pin extracts vapour, the depolymerization still that diesel oil is used, comprise kettle (1), material is spared stringing (2), the clean-out plate (13) at kettle (1) top, the blow-off pipe (12) of kettle (1) bottom, it is characterized in that uniform heat pipe (3) is arranged in the kettle (1), on the even stringing (2) of material, molecular sieve dividing plate (4) is arranged, at kettle (1) middle part mink cell focus freshening feed-pipe (10) is arranged, kettle (1) shell upper has kettle to be connected upper backup pad (9) with burner hearth, kettle (1) outer casing underpart has kettle to be connected lower supporting plate (17) with burner hearth, at kettle (1) top gas reactor vapor pipe (5) is arranged.

2, depolymerization still according to claim 1, it is characterized in that gas reactor vapor pipe (5) is connected with return channel cylindrical shell (6), return channel cylindrical shell (6) bottom has return channel coagulation liquid return line (8) to be connected with kettle (1), and gas outlet pipe (7) in the return channel is arranged at return channel cylindrical shell (6) top.

3, depolymerization still according to claim 1 and 2 is characterized in that material spares the aperture that some φ 6mm are arranged at stringing (2) bottom.