GB/T 2449.2-2015 English PDF (GBT2449.2-2015)

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GB/T 2449.2-2015: Sulphur for industrial use -- Part 2: Liquid product
GB/T 2449.2-2015
GB
ICS 71.060.10
G 13
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
Sulphur for industrial use – Part 2. Liquid product
ISSUED ON. OCTOBER 9, 2015
IMPLEMENTED ON. MAY 1, 2016
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People’s Republic of China;
Standardization Administration of the People’s Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Term and definition ... 5 
4 Requirements ... 5 
5 Sampling ... 5 
6 Test methods ... 7 
7 Inspection rules ... 11 
8 Symbols, packaging, transportation and storage ... 12 
9 Safety ... 13 
Foreword
GB/T 2449 Sulphur for industrial use is divided into two parts.
— Part 1. Solid product;
— Part 2. Liquid product.
This Part is the Part 2 of the GB/T 2449.
This Part is drafted according to the rules given in the GB/T 1.1-2009.
This Part was proposed by China Petroleum and Chemical Industry Federation.
This Part shall be under the jurisdiction of the National Technical Committee for
Standardization of Chemistry (SAC/TC 63).
Drafting organizations of this Part. Research Institute of NCIG, Puguang Branch
of SINOPEC Zhongyuan Oilfield Company, PetroChina Dalian Petrochemical
Company, Chongqing Natural Gas Purification Plant General of PetroChina
Southwest Oil and Gasfield Company (SWOG), Sulphur Sales Department for
the Cooperation Project in Northeast Sichuan launched by PetroChina
Southwest Oil and Gasfield Company (SWOG), Sichuan Oil Safety Technology
and Engineering Co., Ltd in Chengdu, Wengfu Dazhou Chemical Co., Ltd, and
Natural Gas Research Institute of PetroChina Southwest Oil and Gasfield
Company (SWOG).
Main drafters of this Part. Qiu Ailing, Feng Junting, Zou Limei, Ma Fan, Yang
Peichang, Li Wenlong, Li Hongliang, Jin Gang, Tang Chunjie, and Yao
Chengbin.
Sulphur for industrial use – Part 2. Liquid product
Warning. Some of the reagents used in this Part are toxic or corrosive.
Some of the operations are dangerous. This Part does not reveal the
potential safety issues. Users shall be strictly in accordance with the
relevant provisions for proper use, and shall have the responsibility to
take appropriate safety and health measures.
1 Scope
This Part of the GB/T 2449 specifies the requirements, sampling, test methods,
inspection rules, marks, packaging, transportation, storage and safety of the
liquid sulphur for industrial use.
This Part is applicable to the liquid sulphur for industrial use produced from
recycled petroleum refinery gas and natural gas. For the liquid sulphur for
industrial use produced by using other processes, this Part may also be referred
to for implementation.
2 Normative references
The following documents are essential to the application of this document. For
dated references, only the versions with the dates indicated are applicable to
this document. For undated references, only the latest versions (including all
the amendments) are applicable to this document.
GB 190 Packing symbol of dangerous goods
GB/T 601 Chemical reagent – Preparations of standard volumetric solutions
GB/T 603 Chemical reagent – Preparations of reagent solutions for use in
test methods
GB/T 2449.1 Sulphur for industrial use – Part 1. Solid product
GB/T 6003.1 Test sieves – Technical requirements and testing – Part 1. Test
sieves of metal wire cloth
GB/T 6680 General rules for sampling liquid chemical products
GB/T 6682 Water for analytical laboratory use – Specification and test
methods
5.1.1 Sampling method
TAKE samples according to the provisions in the GB/T 6680 and the following
ways.
– TAKE samples from the tankers in the infusion or discharge process. USE the
method of automatic or mechanical closure to periodically take point samples.
– TAKE samples from the tanks. USE the actual loaded liquid sulphur as a
benchmark. Respectively TAKE samples from the sampling ports equipped
with valves in the upper, middle and lower positions. MIX the samples in
equal volumes into average samples.
If there are no sampling ports but discharge openings on the tankers or tanks,
TAKE samples from the discharge openings instead.
5.1.2 Sample size
The total number of samples taken shall not be less than 1kg. After solidification,
MAKE the samples into the laboratory samples used for determining the
inspection items, except the mass fraction of hydrogen sulfide. If the laboratory
samples are more than 1kg, CRUSH them into the fragments with the diameters
of less than 25mm, and thus DIVIDE them into the laboratory samples weighing
1kg.
5.1.3 Laboratory sample processing
DIVIDE the laboratory samples in equal volumes into test samples and
reservation samples. Respectively PUT them into the sample bottles (sacks).
SEAL afterwards. STICK labels on the sample bottles (sacks). INDICATE the
product names, batch numbers, sampling date, sampling personnel, etc. The
reservation samples shall be kept for at least 30d.
5.1.4 Preparation of test samples
SMASH about 500g of test samples, until they can pass through the test sieve
with the pore size of 250μm. All the test sieves being used shall conform to the
requirements for R40/3 series in the GB/T 6003.1.
5.2 Sampling used for determining the mass fractions of hydrogen
sulfide and hydrogen polysulfide
According to the provisions in the GB/T 6680, USE the sampling device shown
in Figure 1 to take samples from the sampling ports (discharge openings) of the
tankers or tanks.
6.2 Determination of the appearance
USE the visual observation method for appearance determination.
6.3 Determination of the mass fraction of sulphur
It shall be in accordance with the provisions in the GB/T 2449.1.
6.4 Determination of the mass fraction of water content
It shall be in accordance with the provisions in the GB/T 2449.1.
6.5 Determination of the mass fraction of ash content
It shall be in accordance with the provisions in the GB/T 2449.1.
6.6 Determination of the acidity
It shall be in accordance with the provisions in the GB/T 2449.1.
6.7 Determination of the mass fraction of organics
It shall be in accordance with the provisions in the GB/T 2449.1.
6.8 Determination of the mass fraction of arsenic
It shall be in accordance with the provisions in the GB/T 2449.1.
6.9 Determination of the mass fraction of iron
It shall be in accordance with the provisions in the GB/T 2449.1.
6.10 Determination of the mass fractions of hydrogen sulfide and
hydrogen polysulfide
6.10.1 Principle
PLACE the specimens in the oil bath at 145°C ± 2°C so that they can become
molten. USE nitrogen to purge the hydrogen sulfide in the specimens. USE zinc
acetate solution to absorb the purged hydrogen sulfide gas, and to generate
the zinc sulfide precipitate. In the acid solutions, zinc sulfide reacts with iodine.
USE sodium thiosulfate standard volumetric solution to titrate excessive iodine.
CALCULATE the mass fraction of hydrogen sulfide according to the
consumption of iodine. The equations are as follows.
type inspection at least once a month. CONDUCT the type inspection under
one of the following circumstances.
a) When there are changes in sources of the raw and auxiliary materials or
processes, which might affect the product quality;
b) When resuming production after production halts;
c) When there are major differences between the exit...