GB/T 23251-2021Guideline for coal used in coal chemical technology (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1. Structure and Drafting Rules of Standardization Documents" drafted.

This document replaces GB/T 23251-2009 "Technical Guidelines for Coal Chemical Coal Use". Compared with GB/T 23251-2009, except for structural adjustment In addition to editorial changes, the main technical changes are as follows:

a) In the general technical rules of coal for coal chemical industry, "utilization of coal resources with higher harmful element content" and "coal quality evaluation of coal for coal chemical industry" are added. price requirements and project design coal type determination" requirements (see 4.4 and 4.5);

b) In "Coal Quality Evaluation Indicators and Technical Requirements for Coal Chemical Industry", a list of coal quality evaluation indicators for various coal chemical projects has been added (see table

1);

c) Add "Quality requirements for raw coal for medium and low temperature pyrolysis" (see Table 2);

d) Add "quality requirements for raw coal for coking" (see Table 3);

e) Add "quality requirements for raw coal for fixed bed coal gasification" (see Table 4);

f) Add "quality requirements for raw coal for fluidized bed coal gasification" (see Table 5);

g) Add "quality requirements for raw coal for coal-water slurry entrained gasification" (see Table 6);

h) Add "Quality requirements for raw coal for dry coal powder entrained flow bed coal gasification" (see Table 7);

i) Add "quality requirements for raw coal for direct liquefaction" (see Table 8);

j) Delete "resource requirements of coal for coal chemical industry" (see Chapter 5 of the:2009 edition).

Introduction

The coal chemical technology for producing solid products, liquid products and gas products using coal as raw material mainly includes.

---Coal low temperature pyrolysis, coking and downstream product processing;

--- Coal direct hydroliquefaction;

---The production of oil products after coal gasification, etc:;

---Coal gasification to produce methanol and downstream products;

---Coal gasification to produce synthetic ammonia and downstream products.

Different coal chemical technologies and projects have different requirements on coal resources and coal quality. This document is based on the current coal chemical technology in my country The status quo of coal requirements for technical use, formulated in combination with the status of coal resources and coal quality characteristics in my country, takes into account the coal quality requirements of various coal chemical technologies and processes.

At the same time, the characteristics of coal resources were fully considered. The formulation of this document, on the one hand, can guide the selection of raw coal for specific coal chemical technologies, and On the other hand, for a specific coal resource, the appropriate coal chemical technology technology can be selected according to its coal quality characteristics, and the Promote comprehensive utilization of coal resources.

This document starts from the matching requirements of coal chemical technology and project with coal resources and coal quality characteristics, regulates coal used in coal chemical industry, and proposes The specific coal quality indicators and technical requirements that need to be considered in various coal chemical technologies should be further protected under the premise of ensuring the quality of coal used in coal chemical industry.

China's high-quality coal and scarce coal. The formulation of this document is a tool for the development and utilization of my country's coal resources and the healthy and orderly development of the coal chemical industry. have an important guiding role. Technical Guidelines for Coal Use in Coal Chemical Industry

1 Scope

This document specifies the quality evaluation indicators and control requirements of raw coal for coal chemical industry The guiding principles for the determination of coal resources with high harmful element content and the design of coal chemical projects.

This document is applicable to coal chemical industry such as coal medium and low temperature pyrolysis, coal coking, coal gasification and direct coal liquefaction for new construction, reconstruction and expansion. project.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 211 Determination method of total moisture in coal

GB/T 212 Industrial Analysis Method of Coal

GB/T 213 Determination method of calorific value of coal

GB/T 214 Determination method of total sulfur in coal

GB/T 215 Determination method of various forms of sulfur in coal

GB/T 216 Determination method of phosphorus in coal

GB/T 217 Coal truth-to-density determination method

GB/T 219 Determination method of coal ash meltability

GB/T 220 Determination method of chemical reactivity of coal to carbon dioxide

GB/T 476 Determination method of carbon and hydrogen in coal

GB/T 477 Coal screening test method

GB/T 479 Determination method of colloidal layer index of bituminous coal

GB/T 1341 Test method for low temperature dry distillation of coal

GB/T 1572 Determination method for slagging of coal

GB/T 1573 Method for Determination of Thermal Stability of Coal

GB/T 1574 Coal Ash Composition Analysis Method

GB/T 2565 Determination method of grindability index of coal Hardgrove method

GB/T 3058 Determination method of arsenic in coal

GB/T 3558 Determination method of chlorine in coal

GB/T 4000 Test method for coke reactivity and strength after reaction

GB/T 4633 Determination method of fluorine in coal

GB/T 5447 Determination method of bituminous coal adhesion index

GB/T 5448 Determination of expansion number of bituminous coal crucible by electric heating method

GB/T 5450 Bituminous coal Oa dilatometer test

GB/T 5751 China Coal Classification

GB/T 6948 Coal Vitrinite Reflectance Microscopic Determination Method END. Draft Version (GB/T 23251-2021)