GB/T 18611-2015Test method for simplified distillation of crude oil (English PDF)

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules.

This standard replaces GB/T 18611-2001 "simple test method for distillation of crude oil," compared with the GB/T 18611-2001, Technical Changes are as follows.

--- Normative references removed GB/T 2538, an increase of GB/T 1884, GB/T 27867, SH/T 0604 (see para. Chapter 2);

--- Increasing the content "when the corresponding pressure conditions may be issued is less than the desired temperature point lower pressure" (see Chapter 3);

--- Removed using common components and the corresponding nitrogen (see 2001 edition of Sections 4 and 5.8);

--- The "standard ground" connection changed to "spherical Interface" connection (see 51, 2001 edition of Chapter 5);

--- On the "electric heating mantle," adds function with magnetic stirring of technical requirements (see 5.1 h, 2001 edition 5.9);

--- Modify the cutting temperature conversion table (see Chapter 6);

--- Increasing the cutting temperature atmospheric pressure correction content (see 8.1.2);

--- The bottle when the liquid temperature vacuum distillation from the "150 °C" changed to "70 °C" (see 8.2.3 and 824, 2001 edition of 8.2.1.);

--- Increase the "cleansing" of content (see 8.3);

--- Added "Quality Assurance and Control" (see Chapter 9).

1 Scope

This standard specifies a simple test method for distillation of crude oil.

This standard applies to water content (mass fraction) of not more than 0.5% of the crude oil distillation at standard pressure equivalent to 500 °C.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document.

GB/T 514-2005 petroleum products Glass liquid thermometer technical conditions

GB/T 1884 crude oil and liquid petroleum products - Laboratory determination of density (density meter method)

GB 1922-2006 oil paints and cleaning solvents

GB/T 4756 petroleum liquids hand sampling method

GB/T 27867 liquid petroleum pipeline automatic sampling

SH/T 0604 crude oil and petroleum products densitometry (U-shaped vibrating tube method)

SY/T 6520 Standard Test Method for crude oil dehydration autoclave method

3 Methods Summary

Using a simple atmospheric distillation unit for crude oil, vacuum distillation and collect fractions. Boiling ranges for atmospheric distillation initial boiling point to 200 °C; recommended as vacuum distillation Sec. the first at 1.33kPa pressure distillation to 287.3 °C (at standard pressure equivalent to 450 °C);

The second is distilled at a pressure 0.266kPa to 290.4 °C (at standard pressure equivalent to 500 °C). Also according to the actual need to set cutting Temperature and pressure conditions in the corresponding release point when the desired temperature is less than the use of lower pressure.

4 Reagents and materials

Solvent gasoline. GB 1922-2006 in line with the provisions of No. 1 low-aromatic-based paints and cleaning solvents with the technical requirements of oil.

5 Instruments

5.1 Simple distillation apparatus. Figures 1 and 2. All devices connecting portion glassware are spherical interface. Simple distillation The main device includes the following sections.

a) distillation flask. 500mL, with a heat-resistant glass. There is a bottleneck in the upper part of the distillate manifold, the bottom of which there are three glass bottleneck Claw, used to support care filler. Bottleneck external insulation sleeve insulation thickness of about 5mm. The bottle has a shoulder mouth temperature, an inside diameter of the bottleneck 29mm ~ 31mm, length of 250mm ~ 260mm.

b) on thermowell. length of about 65mm, inner diameter of about 8mm.