李忻毕业设计说明书终版 - 图文

年产630万吨生铁

（其中炼钢生铁90%，铸造生铁10%）

的高炉炼铁车间工艺设计

专 业：冶金工程专业 姓 名： 李 忻 指导老师： 杨双平

设计总说明

钢铁厂一般是指具有炼铁、炼钢及轧钢的完整生产周期的冶金工厂。高炉炼铁车间是为炼钢提供原材料的车间组织。

本次毕业设计的题目为设计一座年产630万吨生铁（其中炼钢生铁90%，铸造生铁10%）的高炉炼铁车间工艺设计，本设计采用一系列先进工艺，如全冷却壁，碳砖、炉底高铝砖综合炉底，高炉长寿技术，富氧喷煤等。本设计的主要任务包括高炉配料计算、高炉本体设计、料运系统方案设计、高炉炉顶设备设计、高炉鼓风机的选择、热风炉设计计算、渣铁处理系统及煤气处理系统设计及其车间平面布置等几大部分，并对部分工艺流程进行了说明。

本设计涉及到的计算部分为高炉配料计算、高炉内型计算、高炉砌砖计算以及鼓风机和外燃式热风炉的相关计算。其中高炉设计部分和热风炉设计部分是本次设计的主要部分。

本设计涉及到的设备选择包括高炉设备的选择、高炉供料系统的设备选择、鼓风机的选择、渣铁处理系统及煤气处理系统设备选择。

我希望，所采用的先进技术能是高炉实现高产、优质、低耗、长寿、环保的生产目标。

关键词：高炉,热风炉,工艺设计,设备

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ANNUAL OUTPUT OF 6.3 MILLION TONS OF PIG IRON BLAST FURNACE IRONMAKING WORKSHOP PROCESS DESIGN (OF WHICH 90% IS STEEL-MAKING PIG IRON, AND 10% IS CAST IRON )

Specialty:Metallurgical Engineering

Name:Li Xin

Director:Yang Shuangping

Design Description

Generally refers to a steel plant iron, steel making and rolling of the complete production cycle of metallurgical plants. Blast furnace steel plant with raw materials for the workshop organization

The subject of this graduation project for the design of an annual output of 6.3million tons of pig iron (including steel-making pig iron 90%, cast iron 10%) of the blast furnace plant process design. This design uses a series of advanced technology, such as whole cooling wall, carbon bricks, high alumina bricks integrated bottom bottom, blast furnace technology, enriched PCI, etc.the main task of this design include the blast furnace burden calculation, blast furnace body design, material transport system design, equipment design, blast furnace, blast furnace blower selection, design and calculation of hot stove, iron slag processing systems and gas handling system design and plant layout and so few parts, and part of the process are described.

The design part involves the calculation of blast furnace burden calculation,

computing blast furnace, blast furnace blowers and brick computing, and the related calculation of internal combustion stove. Part and the hot blast stove blast furnace design in which the design part is the main part of this design.

The design options related to the equipment, including blast furnace

equipment selection, blast furnace feed system, equipment selection, the choice of blower, iron slag processing systems and gas handling system equipment selection. I hope that advanced technology can be used in a blast furnace to achieve high yield, high quality low; longevity, environmental protection, the production target.

Key words: blast furnace, Stove, process design, equipment

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目 录

前 言 .......................................................... 1 1 高炉配料计算 ................................................... 2 1.1 原始资料 ..................................................... 2

1.1.1 矿石的选配 ............................................... 4 1.2 原始资料的整理 ............................................... 4 1.3 冶炼条件的确定 ............................................... 4 1.4.2 煤气的成分和数量计算 .................................... 12 1.4.3物料平衡表的编制 ......................................... 15 1.5 热平衡 ...................................................... 16 1.5.1 计算热量收入项 .......................................... 16 1.5.2 计算热量支出项 .......................................... 17 1.5.3 根据以上计算列出热量平衡表 .............................. 20 1.5.4 高炉热工指标的分析 ...................................... 21 2 高炉本体设计 .................................................. 22 2.1 高炉内型相关计算 ............................................ 22 2.2 高炉内衬设计 ................................................ 25 2.2.1炉底 ..................................................... 25 2.2.2炉缸 ..................................................... 26 2.2.3炉腹 ..................................................... 26 2.2.4炉腰 ..................................................... 27 2.2.5炉身 ..................................................... 27 2.3 高炉炉壳和高炉基础 .......................................... 32 2.3.1高炉炉壳 ................................................. 32 2.3.2高炉基础 ................................................. 33 2.4炉体设备 .................................................... 34 2.4.1 炉体冷却设备 ............................................ 34 2.4.2 风口水套 ................................................ 35 2.4.3 铁口套 .................................................. 35 2.4.4炉喉钢砖 ................................................. 35 2.4.5 炉顶保护板 .............................................. 35 3 料运系统计算及装料布料设备 .................................... 36 3.1贮矿槽 ...................................................... 36 3.1.1 平面布置 ................................................ 36 3.1.2 槽上运输方式 ............................................ 36

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3.1.3 储矿槽工艺参数 .......................................... 36 3.1.4 槽下供料 ................................................ 37 3.2 料坑设备 .................................................... 37 3.3 碎焦运送设施 ................................................ 38 3.4 上料设备 .................................................... 38 4 高炉鼓风机的选择 .............................................. 39 4.1 高炉鼓风量及鼓风压力的确定 .................................. 39 4.1.1 高炉入炉风量 ............................................ 39 4.1.2 鼓风机出口风量 .......................................... 39 4.1.3 高炉鼓风压力 ............................................ 40 4.2 高炉鼓风机能力的确定 ........................................ 40 4.2.1 大气状况对高炉鼓风的影响 ................................ 40 4.2.2 鼓风机工况的计算 ........................................ 40 4.2.3 鼓风机的选择 ............................................ 41 4.3 高炉鼓风机的工艺过程 ....................................... 42 5 热风炉 ........................................................ 43 5.1 计算的原始数据 .............................................. 43 5.2 燃烧计算 .................................................... 44 5.2.1 煤气成分换算 ............................................ 44 5.2.2 煤气发热值计算 .......................................... 44 5.2.3 燃烧1标米3煤气的空气需要量 ............................ 45 5.2.4燃烧1标米3煤气生成的烟气量灰分分组成 ................... 45 5.2.5理论燃烧温度和实际燃烧温度计算 ........................... 46 5.3 热平衡计算 .................................................. 48 5.3.1 计算鼓风从80℃提高到1200℃所增加的热含量 ............... 48 5.3.2 加热1标米3鼓风需要的煤气量 ............................ 48 5.3.3 煤气消耗量及烟气量 ...................................... 48 5.4 蓄热室热工计算 .............................................. 49 5.4.1 热工计算的原始条件 ...................................... 51 5.4.2 蓄热室各部位的烟气及鼓风温度 ............................ 52 5.4.3 蓄热室面积及各段砖格子高度的计算 ........................ 53 5.4.4 蓄热室面积及蓄热室各段高度的调整 .......................... 55 5.5 热风炉的蓄热面积指标 ........................................ 55 6 风口平台及渣铁处理系统 ........................................ 57 6.1 风口平台和出铁场布置 ........................................ 57 6.1.1 铁口及出铁场数目的确定 .................................. 57

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