CN105924989A

CN105924989A - Production process and product of paint-slag modified bitumen

Info

Publication number: CN105924989A
Application number: CN201610420883.0A
Authority: CN
Inventors: 徐仲均; 戚涛; 李静
Original assignee: Beijing University of Chemical Technology
Current assignee: Beijing University of Chemical Technology
Priority date: 2016-06-13
Filing date: 2016-06-13
Publication date: 2016-09-07

Abstract

The invention discloses a production process and a product of paint-slag modified bitumen. The production process includes collecting paint slag, filtering to obtain paint slag with water content smaller than 85%, heating matrix asphalt to 90-150DEG C, adding paint slag into asphalt to mix and dissolve for 30-90 min with cutting and stirring, wherein weight of paint slag accounts for not larger than 80% of the total weight of the paint slag and asphalt; heating to 150-200 DEG C, continually cutting and stirring at high speed for 30-90 min to obtain paint-slag modified bitumen. The production process solves the problems of pollution of paint slag and high treatment cost effectively, and the product conforms to relevant national standards according to the result of leaching test performed as Solid Waste-Extraction Procedure for Leaching Toxicity-Sulphuric Acid & Nitric Acid Method (HJ/299-2007). In addition, without affecting subsequent use of asphalt, the production process has high environmental, social and economic benefits.

Description

The production technology of a kind of paint slag modified Colophonium and product

Technical field

The present invention relates to the production technology of a kind of paint slag modified Colophonium, specifically by a kind of production technology and the product of various paint slags and Colophonium mixed dissolution

Background technology

At present, during spraying coating process manufacture being widely used in all kinds of vehicles manufacture, furniture and production of construction materials, various industry and the articles for daily use etc..Under normal circumstances, when utilizing air gun to carry out spraying operation, its coating efficiency is typically below 50%, and remaining major part paint vehicle all splashes in painting workshop, forms paint slag through later collection, thus spraying process can produce substantial amounts of paint slag.This type of refuse viscosity is big, and degradation time is long in the environment, and containing various heavy and multiple organic carcinogen, toxicity is very big, is typical hazardous waste.If the directly burning of paint slag can produce a large amount of carcinogen, form secondary pollution, and burn the inorganic substances that can not effectively go in paint removal slag, such as all kinds of heavy metals etc.；As directly filled, the noxious substance in paint slag can penetrate into underground, contaminated soil and subsoil water；If the third party transferring to qualification processes, then can produce high expense.There is many good characteristics such as waterproof, moistureproof, corrosion-resistant and good ductility due to Colophonium, it is widely used in the fields such as building, civil engineering, consumption is the biggest, if can be by paint slag mixed dissolution in Colophonium, can preferably solve to paint Slag treatment problem, a kind of modified pitch of good performance can be obtained again.At present, when utilizing paint slag to produce corresponding asphaltic products, it is nearly all that paint slag high temperature drying is dehydrated, then grind to form graininess, join in the Colophonium of about 170 DEG C and mix, but, paint slag is after high temperature drying is dehydrated, coherent mass can be formed, even across milling, granule also can be relatively large, after joining in the Colophonium of 170 DEG C, effect due to high temperature, paint solid impurity particle can be further bonded, cause painting slag and be difficult to miscible with Colophonium, there is many defects such as performance shakiness in the product obtained, in addition, after paint slag drying dehydration, lose viscosity, above processing method does not the most make full use of the viscosity that paint slag is intrinsic, also it is a kind of waste, and complex manufacturing, mix proportion design requires height, the problems such as production cost is high.

Summary of the invention

The invention provides production technology and the product of a kind of paint slag modified Colophonium, have an advantage in that technological process is simple, paint slag is good with the compatibility of Colophonium, the properties of product obtained are stable, safe and reliable, greatly reduce the processing cost of paint slag, there is preferable environment, social and economic benefits, preferably resolve the problems referred to above.

The technical scheme is that production technology and the product of a kind of paint slag modified Colophonium, its step: (1) by collect paint slag through dehydration so that paint slag moisture content be not more than 85%；(2) matrix pitch being heated to 90-150 DEG C, added by paint slag and carry out mixed dissolution in Colophonium under the conditions of the shear agitation of 500-2500rpm, wherein, the percentage by weight of paint slag is not more than the 80% of the two gross weight, and this condition maintains 30-90min；(3) after adding paint slag, heating up 20 DEG C every 20-40min, maximum temperature is 200 DEG C, continues to stir with the speed of 1000-3500rpm to shear 30-90min, prepares paint slag modified asphaltic products.

Detailed description of the invention

The technological process of production:

Paint slag → drainage → matrix pitch heating → by than batch mixing → inspection → product

Embodiment 1

Collect the water paint slag that certain automobile factory's spraying operation produces, make paint slag moisture content about 50% through filter pressing, take No. 90 asphalt of 100g in heater, after being heated to 110 DEG C, stir with the VELOCITY SHEAR of 1500rpm with spiral shearing stirrer, it is subsequently added 50g and paints slag, shear agitation 60min；It is warmed up to 130 DEG C, shear agitation 20min；It is warmed up to 150 DEG C, shear agitation 20min；It is warmed up to 170 DEG C, stirs 20min with the VELOCITY SHEAR of 2000rpm, after mixed material cooling, be product through inspection is qualified.

Embodiment 2

Collect the oil paint slag that certain automobile factory's spraying operation produces, make paint slag moisture content about 80% through filter pressing, take No. 90 asphalt of 100g in heater, after being heated to 130 DEG C, stir with the VELOCITY SHEAR of 2500rpm with spiral shearing stirrer, it is subsequently added 50g and paints slag, shear agitation 60min；It is warmed up to 150 DEG C, shear agitation 15min；It is warmed up to 170 DEG C, shear agitation 15min；It is warmed up to 190 DEG C, with VELOCITY SHEAR 10min of 3500rpm, after mixed material cooling, is product through inspection is qualified.

Embodiment 3

Collect the water paint slag that certain automobile factory's spraying operation produces, make paint slag moisture content about 10% through filter pressing, take No. 90 asphalt of 100g in heater, after being heated to 90 DEG C, stir with the VELOCITY SHEAR of 500rpm with spiral shearing stirrer, it is subsequently added 50g and paints slag, shear agitation 30min, it is warmed up to 110 DEG C of shear agitation 30min, it is warmed up to 130 DEG C of shear agitation 20min, it is warmed up to 150 DEG C, continues shear agitation 10min with the speed of 1000rpm, after mixed material cooling, be product through inspection is qualified.

The inspection of product: containing V in former paint slag, Mn, all multiple harmful heavy metals such as Cu, technique gained asphaltic products carries out leaching test according to the method for " solid waste Leaching method sulfonitric method " (HJ/299-2007), and leachate is checked through ICP-MS, and heavy metal free detects, meet concerned countries standard, and the ductility of Colophonium, the characteristic such as needle penetration is the most unchanged, does not affect its follow-up use.

Product main performance:

1, proportion (g/cm³): 1.2-1.4；2, needle penetration (25 DEG C, 100g, 5s) (0.1mm): 70-1003, ductility (25 DEG C, 5cm/min) (cm): >=60；4, softening point (ring and ball method) (DEG C): 45-55.

Claims

1. the production technology of paint slag modified Colophonium and a product, its step: the paint slag dehydration that (1) will collect so that paint slag is aqueous Rate is not more than 85%；(2) matrix pitch is heated to 90-150 DEG C, will paint under the conditions of the shear agitation of 500-2500rpm Carrying out mixed dissolution in slag addition Colophonium, wherein, the percentage by weight of paint slag is not more than the 80% of the two gross weight, and this condition is tieed up Hold 30-90min；(3) temperature programming to 150-200 DEG C, continues to stir 30-90min with the VELOCITY SHEAR of 1000-3500rpm, Prepare paint slag modified asphaltic products.

The production technology of a kind of paint slag modified Colophonium the most according to claim 1 and product, it is characterised in that technique paint used slag is The oil used during the most all kinds of vehicles manufactures, furniture and production of construction materials, various industry and the articles for daily use manufacture etc. One or more in the paint slag that paint or water paint produce.

The production technology of a kind of paint slag modified Colophonium the most according to claim 1 and product, it is characterised in that Colophonium used by technique is One or more of all kinds of Colophoniumes such as asphalt, coal tar pitch, shale tar pitch, bitumen.

The production technology of a kind of paint slag modified Colophonium the most according to claim 1 and product, it is characterised in that technique heating process is Temperature programming.Matrix pitch being heated to 90-150 DEG C, heats up 20 DEG C every 20-40min after adding paint slag, maximum temperature is 200℃。