SU810753A1 - Method of binder production - Google Patents

Description

(54) METHOD FOR GETTING BINDER

The invention relates to methods for producing a pond-storage pond and asphalt de-asphalting for selective purification of petroleum oils with propane using acidic tars and can be used in the refining industry.

A known method of producing acidic tar with petroleum tar 1 by co-processing. The SOs released at high temperature is an oxidizer for the organic part of tar, this method has not been widely spread due to the complexity of the instrumentation and the poor quality of the obtained material.

There is a known method of producing oil tars with oxidizing oil by air, in order to accelerate the oxidation process, the organic part of acidic tar 2 is added to the oil tar. The process is characterized by the complexity of the equipment, high corrosion of the equipment, using only organic part of acidic tar as a catalyst for oxidation of oil tar.

Closest to the invention is a method for producing a tartar by neutralizing acidic tar with aqueous

alkali solution, followed by drying and oxidation with air at 160-190 ° C for 4-5 hours to obtain oxidation products 3.

However, the resulting gnaw has a low ductility.

The aim of the invention is to improve the quality of the target product.

This goal is achieved by the proposed method of obtaining a binder by neutralizing acidic tar, drying and oxidation at elevated temperature of the neutralization products and additional oxidation by air of the obtained oxidation products in the presence of 40-60 May. % asphalt oil deasphalting with propane.

Preferably, the additional oxidation is carried out. For C for min. At an air flow rate of 0.5-0.8 l / min-kg.

Distinctive features of the process are additional oxidation in the presence of 40-60 May. % asphalt de-asphalting of petroleum oils with propane, as well as under preferred conditions of the process.

Acid tars, a large-tonnage waste from the production of oil plants, contain up to 60% sulfuric acid and are discharged in large quantities into storage ponds.

Due to the evaporation of harmful gases (SOa, SOs) from the surface of ponds and the leaching of sulfuric acid by atmospheric and flood waters, a strong pollution of the air and water basins occurs. The elimination of reservoir ponds is an important step in protecting the environment and creating waste-free production.

When stored for many years in storage ponds due to various chemical reactions and the leaching of sulfuric acid with water, the composition of acidic tar varies considerably: tar has

Indicator

Dilution temperature, ° С

Depth of needle penetration at 25 ° С, 0.1 Л1М

Extensibility at 25 ° С, cm

Flash point in open crucible, ° С

Content of water-soluble compound,%

The content of water-soluble acids and lye

Weight loss at 160 ° C Example 1. 1000 g of acidic tar having an acid number of 30.0 mg KOH / g are neutralized with an aqueous solution of alkali at 95 ° C for 6.0 hours, water is distilled off at 130 ° C 3, 0 h, oxidized at 195 ° C for 6.0 h with an air flow rate of 3.0 l / min kg. The resulting oxidation product has the following parameters: penetration is the next 50 0/1 mm, the softening temperature on TISH is 65 ° C, the ductility is 2.0 cm. To this product is added 40-60 May. % heavy asphalt and oxidized by vigorous stirring at

less acidity and when heated less SOj and SOs are released from it.

Asphalt deasphaltizacin of petroleum oils with propane is a large-capacity waste from the production of selective purification of petroleum oils with propane. Currently, they are burned in fireboxes or sent to acid tar storage ponds. Depending on the oil being refined, they are divided into heavy and light. Characteristics of the various asphalt are presented in table. one.

In tab. 2 shows the characteristics of the asphalts used in the examples.

Table 1

Asphalt deasphalting

t ely

easy 11

31-42

120-150 140

280 0.1

0.1-0.3I 04-0.8 absent

Table 2 140 ° C for 30 minutes with an air supply in the amount of 0.8 l / min kg of the mixture. In tab. Figure 3 shows the quality data of a stranger obtained using different amounts of heavy asphalt. Example 2. To the oxidation product of the acidic tar obtained in Example 1, 40-60 may be added. % light asphalt and carried out the oxidation at 140 ° C for 20 min with air supply in an amount of 0.5 l / min kg of the mixture. In tab. Figure 4 shows the quality data of the strangers obtained using different amounts of light asphalt.

Clutch with marble

Example 3. To the oxidation product of the acidic tar obtained in Example 1, 40-60 may be added. % of a mixture of heavy and light asphalt, taken in a 1: 1 ratio, and carried out the oxidation at 160 ° C. In this way, the method according to the invention improves the quality of the target product.

In addition, the method allows to dispose of hazardous waste production.

Claims (3)

1. A method of producing a binder by neutralizing acid tar, billet and oxidation at elevated temperature of the neutralization products to obtain products. Table 3 Endures Table 4 Amount of light asphalt, May.,% 30 min with air supply in the amount of 0.8 l / min kg of the mixture. In tab. Figure 5 shows the quality data in the slant obtained using different amounts of a mixture of heavy and light asphalt. Table5 Amount of mix, May. % oxidation, characterized in that, in order to improve the quality of the target product, the oxidation products are subjected to additional oxidation with air in the presence of 40-60 May. % asphalt oil deasphalting with propane. 2. A method according to claim 1, characterized in that the additional oxidation is carried out at 140-160 ° C for 20-50 minutes at an air flow rate of 0, -0.8 l / min kg. 78 Sources of information accepted by v2. USSR author's certificate attention in the examination: № 12577, cl. C 10 C.3 / 04, 1930. I. USSR Copyright Certificate No. 617937, Cl. C 10 C 3/04, 1976 (Proto. No. 165975, class C 10 C 3/04, 1964.5 type). 810753 3. USSR author's certificate