2.2.2 新型间歇式蒸煮设备在线视频

同学们好
Hello, class

这节课要讲的内容是
This class is about

新型间歇式蒸煮设备
novel batch cooking equipment

包括间歇式置换蒸煮设备
including batch replacement cooking equipment

和超级间歇蒸煮设备
and super batch cooking equipment

随着化学制浆技术的发展
With the development of chemical pulp technology

常规间歇蒸煮设备
conventional batch cooking equipment

面临很多挑战
is facing many challenges

一方面化学制浆
On the one hand, the production capacity

产能越来越大
of chemical pulp is increasing

需要配置的
and the number of digesters

蒸煮锅数量增多
that need to be equipped is increasing

对设备操控
which has great influence on equipment control

全厂的水电汽平衡
water, power and steam balance

和能源管控产生了极大的影响
and energy management and control of the whole plant

另一方面
On the other hand

传统间歇蒸煮
the conventional batch cooking

用气量大，能耗高
uses large gas volume with high energy consumption

每吨浆需要使用1.8到2.4吨的蒸汽
It is necessary to use 1.8 to 2.4 tons of steam for one ton pulp

而且放气过程产生臭气污染
and the exhaust process generates odor pollution

蒸煮结束时
At the end of cooking

锅内高温物料的热能
the heat energy of the high temperature material in the digester

被简单冷却或是换热处理
is simply cooled or subject to heat exchange treatment

没有得到合理的利用
which is not reasonably utilized

因此，80年代
Therefore, in the 1980s

在立式蒸煮锅的基础上
on the basis of vertical digester

发展了能充分利用
a kind of low-energy pulp system was developed

高温物料热能的一种
which can make full use of

低能耗制浆系统
the heat energy of high-temperature material

通过能源管理技术
Through energy management technology

可在蒸煮器内进行多次热置换
multiple heat displacements can be carried out in the digester

最后进行冷喷放
Finally, the cold blow can be carried out

大幅降低蒸煮能耗
to reduce the energy consumption of digester greatly

其能耗只有原来的一半
and the energy consumption is only 1/2 of the original one

另外还实现了蒸煮过程的
In addition, the deep delignification

深度脱木素
during the cooking process is realized

新型间歇式蒸煮系统
Three representative technologies

先后发展了三种
have been developed

有代表性的技术
in the novel batch cooking system successively

第一种是RDH快速热置换蒸煮
The first is RDH rapid heat displacement cooking

最早由芬兰瑞德Radar公司发明
which was first invented by Finnish Radar Company

后转给美国比罗伊特公司
then transferred to American Bayreuth Company

1998年又被加拿大GLV公司收购
and acquired by Canadian GLV Company in 1998

第二种是DDS置换蒸煮
The second is DDS replacement cooking

是由美国CabTec公司20世纪初
which was a new energy-saving pulp technology

新开发的一种节能制浆技术
developed by American CabTec Company in the early 20th century

是RDH的升级版
It is an upgraded version of RDH

第三种是Superbatch超级间歇蒸煮
The third is Superbatch super batch cooking

最早由瑞典顺智Sunds公司持有
which was first owned by Sweden Sunds Company

后被美卓收购
then acquired by Metso

在之后转卖给GLV公司
and resold to GLV Company

2019年2月份
In February 2019

GLV公司制浆业务被维美德公司收购
GLV's pulp business was acquired by Valmet Company

RDH置换蒸煮的工作原理是
The working principle of RDH displacement cooking is that

当蒸煮结束时
when the cooking is finished

蒸煮锅内热黑液
the hot black liquor in the digester is displaced

用洗浆机的滤液
by the filter liquid of the pulping machine

也就是用冷黑液进行置换
i.e. the cold black liquor

置换出来的黑液根据温度不同
and the displaced black liquor is stored in different

被分别储存在不同的黑液槽中
black liquor tanks according to the temperature

用于下一次蒸煮时
which will be used to preheat the raw material

原料和蒸煮白液的预热
and the digester white liquor during the next cooking

蒸煮好的纸浆在蒸煮锅内
The boiled pulp is in the digester

完成至少1次洗涤
and shall be washed for at least one time

并被冷却下来
and cooled down

然后用压缩空气
and then blown by compressed air

将其喷放或泵抽至喷放锅
or pumped to the blow tank

快速热置换加热操作
Fast heat displacement heating operation

程序如图所示
procedure is as shown in the figure

从蒸煮结束进行
From the end of cooking and the beginning

热黑液置换开始
of hot black liquor displacement

到下一次蒸煮结束
to the end of the next cooking

完成一个循环需要9个步骤
it takes 9 steps to complete a circulation

DDS置换蒸煮
DDS displacement cooking

是在RDH的基础上发展起来的
is developed on the basis of RDH

其工作原理和RDH类似
Its working principle is similar to that of RDH

相比前者
Compared with the former

具有更加稳定、可靠的槽罐区
it has more stable and reliable tank area

和自动化控制技术
and automatic control technology

吨浆蒸汽消耗进一步
and the steam consumption per ton pulp

降至0.5~0.8吨
is further reduced to 0.5~0.8 tons

在国内，广东鼎丰纸业2000年
At home, Guangdong Dingfeng Paper

引进了RDH置换蒸煮
introduced RDH displacement cooking in 2000

配置3台120立方的立锅
equipped with three 120m3 vertical digesters

产能最大7.5万吨
with the maximum production capacity of 75,000 tons

2004年，升级为DDS置换蒸煮
In 2004, they are upgraded to DDS displacement cooking

改造之后
and after transformation

产能提升到10万吨
the production capacity increased to 100,000 tons

DDS蒸煮和RDH蒸煮
The comparison of DDS cooking and RDH cooking

结果对比如表所示
results are as shown in the table

从表中数据可以看出
From the table data

升级为DDS之后
it can be seen that after upgrading to DDS

原料、药品等消耗降低
the consumption of raw materials and drugs, etc. is reduced

纸浆质量提高
and the pulp quality improved

间歇式置换蒸煮系统主体设备
The main equipment of batch displacement cooking system

包括立式蒸煮锅和槽罐
includes vertical digester and tank

因工艺不同
Due to the different process

置换蒸煮的立锅
compared with the traditional vertical digester

相较于传统立锅
the vertical digester of the displacement cooking

增加了自动锅盖阀、抽风设备
adds automatic digester cover valve, suction equipment

破真空设备、γ射线
vacuum breaking equipment, γ-ray

放锅稀释嘴、锥部三角架
digester dumping dilution nozzle, cone tripod

装填喷嘴、蒸汽分布器等部件
filling nozzle, steam distributor and other components

其中，抽风设备的作用
Among them, the function of the exhaust equipment

是抽出木片带入的空气
is to draw out the air brought in by the wood chips

增加装锅量
and increase the quantity of the digester loading volume

破真空设备是
The vacuum breaking equipment

置换蒸煮系统特有的
is uniquely owned by the displacement cooking system

主要是置换蒸煮
The reason for adoption of this equipment is

冷喷放快结束时
at the end of cold blowing of displacement cooking

锅内压力比较小
the pressure in the digester is relatively small

浆料需要借助泵抽出
The pulp needs to be extracted with the help of the pump

为避免蒸煮锅产生负压
In order to avoid the negative pressure of the digester

并实现放锅完全
and realize the complete discharge of the digester

需要用这个设备来破除负压
it is necessary to use this equipment to break the negative pressure

蒸汽分布器也是
The steam distributor is also

置换蒸煮设备特有的
uniquely owned by the displacement cooking equipment

它安装在循环管上
It is mounted on the circulation tube

利用循环泵将蒸汽
and the steam is directly added

直接加入到黑液中
to the black liquor by the circulation tube

补充多次置换产生的蒸汽损耗
to supplement the steam loss generated by multiple displacements

槽罐是置换蒸煮的核心
The tank is the core of displacement cooking

主要设备有冷黑液槽（A）
The main equipment includes cold black liquor tank (A)

温黑液槽（B）
warm black liquor tank (B)

热黑液槽（C）
hot black liquor tank (C)

热白液贮存槽
hot white liquid storage tank

置换槽
displacement tank

热交换器及泵
heat exchanger and pump

另外还有一套控制系统
In addition, there is also a set of control system

包括放锅过程的
including fuzzy logic control (FLC)

模糊逻辑控制FLC
in the process of charging digester

槽区液位模糊预测控制MPC
fuzzy prediction control MPC of tank level

以及药液置换流动
and the MVC system of "multi-variable control"

“多变量控制”MVC系统
of the displacement flow of liquor

在这些槽罐中
In these tanks

热黑液槽、温黑液槽
the hot black liquor tank, the warm black liquor tank

和热白液贮存槽
and the hot white liquid storage tank

是立式压力容器
are vertical pressure vessels

冷黑液槽和
and the cold black liquor tank and

置换槽是常压容器
the displacement tank are normal pressure vessels

超级间歇蒸煮与
Compared the super batch cooking

RDH或DDS蒸煮相比
with RDH or DDS cooking

其最大特点就是
the biggest characteristic of it is that

在料片预浸渍后采用了
patented hot black liquor treatment process

专利的热黑液处理工艺
is adopted after pre-impregnation of the sheets

实现了高温快速脱木素
which realizes rapid delignification at high temperature

进一步降低了粗浆硬度
further reduces the hardness of crude pulp

提高了纸浆强度
and improves the strength of the pulp

其工艺技术更加合理The technology is more reasonable

简单实用simple and practical

超级间歇蒸煮主体设备
The super batch cooking equipment

也是有若干个立式蒸煮锅
is also composed of several vertical digesters

和一系列储液罐组成
and a series of storage tanks

超级间歇蒸煮主要过程操作
The main process operation of the super batch cooking

包括4个步骤
include 4 steps

一是装锅预浸
first is loading and presoaking

二是加热蒸煮
second is heating and cooking

三是黑液置换
third is black liquor displacement

四是用泵排放
and fourth is pump dumping

今天的课就讲到这里
That’s all for today

谢谢大家
Thank you