CN103589500A - Production technology for waste oil pyrolysis and regeneration - Google Patents

Abstract

The invention discloses a production technology for waste oil pyrolysis and regeneration, which comprises the production steps of A, filtration, impurity removal and dehydration; b, pyrolysis reaction: a, entering produced oil gas a reactor to generate superimposition catalytic reaction under normal pressure; a) collecting reacted heavy-oil molecules as lubricating oil and basic oil from the bottom of the reactor; b) cooling reacted light-oil molecules and fractioning into diesel oil and fuel oil through a condenser from the top of the reactor; c) directly entering non-pyrolyzed asphalt into an asphalt collection tank. The production technology for waste oil pyrolysis and regeneration has the advantages that 1, due to pure physical pyrolysis and catalytic superposition recombination, a product is high in quality, secondary processing is not needed, and pollution is avoided; 2, the product is high in yield and can be clearly partitioned; 3, the product can be directly applied in all industries such as buildings, machinery, traffic, vehicles and boilers and can meet a practical standard of the industry.

Description

A kind of waste oil pyrolysis recycle production technique

Technical field

This invention relates to waste oil pyrolysis recycle production technique field.

Background technology

Current more than 90% waste oil (waste lubricating oil) is extracted oil by indigenous method, the purchase of little refinery is cracked into inferior petrol and diesel oil with waste oil pyrolysis recycle production technique processing of poor quality or the oil that makes a fire is used up, these illegal factories that extract oil by indigenous method are illegal enterprises that country prohibites, and are subject to severe control.The diesel regenerated poor quality of existing waste oil production technique, some complex process, investment is large, and floor space is large, and Pintsch process is open firing, and safety problem is serious, and yield is low, pollutes greatly, and production cost is high.

Summary of the invention

Object of the present invention is exactly the oil product poor product quality for current existing waste oil regeneration production process regeneration, regeneration rate is low, some complex process, facility investment is large, production cost is high, floor space is large, and it is not enough that unsafe factor waits more, and a kind of waste oil regeneration production process that oil quality is good, yield is high, safe of regeneration is provided.

Production craft step of the present invention is

A. filtering and impurity removing dehydration: waste oil is filtered to impurity elimination, dehydration;

B. scission reaction: the waste oil that filters impurity elimination, dehydration is warming up to after 120 ℃-150 ℃, inserts in thin-film evaporator cracking at the temperature of 420-450 ℃;

A. the oil gas wherein producing enters reactor, carries out oligomerization under normal pressure;

A). the heavy oil molecules after scission reaction is collected as lubricating oil, base oil from reactor bottom;

B) the light oil molecule after scission reaction is diesel oil, oil fuel from reactor head through the cooling fractionation of condenser;

B. wherein uncracked pitch directly enters pitch holding tank.

Advantage of the present invention is:

1, the pure physics cracking of this process using, catalytic polymerization restructuring, good product quality, without secondary processing and pollution.

2, product yield is high, and product is cut apart clear.

3, product can be directly used in each row application building, machinery, traffic, vehicle, boiler etc., can reach industry practical standard.

Embodiment

With waste oil regeneration, produce a production technique for oil fuel, diesel oil, lubricant base, pitch, it is characterized in that production craft step is:

A. filtering and impurity removing dehydration: waste oil, by high density filter device, is crossed and filtered to remove the impurity that all affect cracking under normal pressure.Dehydration

B. scission reaction: insert in thin-film evaporator cracking at the temperature of 420-450 ℃ after the waste oil that filters impurity elimination, dehydration is warming up to 120 ℃-150 ℃;

A. the oil gas wherein producing enters reactor, carries out oligomerization under normal pressure;

A). reacted heavy oil molecules is collected as lubricating oil, base oil from reactor bottom;

B) reacted light oil molecule is cooled to diesel oil from reactor head through condenser, then is diesel oil finished product after strainer filters;

C) the noncondensable gas molecule producing when cracking, again through repeatedly catalyst reaction is superimposed, forms oil molecule, and the noncondensable gas molecule tail gas of trace is after water-sealed tank absorption, and emission gases is burnt, and its thermal energy is used for the heat energy that dewaters.

B. wherein uncracked pitch directly enters pitch holding tank.

Claims (1)

1. a waste oil pyrolysis recycle production technique, is characterized in that its production stage is:

Filtering and impurity removing dehydration: waste oil is filtered to impurity elimination, dehydration;

Scission reaction: the waste oil that filters impurity elimination, dehydration is warming up to after 120 ℃-150 ℃, inserts in thin-film evaporator cracking at the temperature of 420-450 ℃;

A. the oil gas wherein producing enters reactor, carries out oligomerization under normal pressure;

A) heavy oil molecules after scission reaction is collected as lubricating oil, base oil from reactor bottom;

B) the light oil molecule after scission reaction is diesel oil, oil fuel from reactor head through the cooling fractionation of condenser;

B. wherein uncracked pitch directly enters pitch holding tank.