WO2013159535A1 - Supercritical salting-out and desalting device for treatment of salt-containing wastewater - Google Patents

Supercritical salting-out and desalting device for treatment of salt-containing wastewater Download PDF

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Publication number
WO2013159535A1
WO2013159535A1 PCT/CN2012/085893 CN2012085893W WO2013159535A1 WO 2013159535 A1 WO2013159535 A1 WO 2013159535A1 CN 2012085893 W CN2012085893 W CN 2012085893W WO 2013159535 A1 WO2013159535 A1 WO 2013159535A1
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Prior art keywords
salt
supercritical
cylinder
straight cylinder
salting
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PCT/CN2012/085893
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French (fr)
Chinese (zh)
Inventor
王树众
唐兴颖
徐东海
张洁
公彦猛
王玉珍
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西安交通大学
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Publication of WO2013159535A1 publication Critical patent/WO2013159535A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/008—Processes carried out under supercritical conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/06—Treatment of sludge; Devices therefor by oxidation
    • C02F11/08—Wet air oxidation
    • C02F11/086—Wet air oxidation in the supercritical state
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids

Definitions

  • the invention relates to a salt-containing wastewater desalination device, in particular to a supercritical salt-salting desalination treatment for salty wastewater treatment.
  • the organic supercritical water treatment technology consists of three technologies: supercritical water oxidation technology, supercritical water partial oxidation technology and supercritical water gasification technology.
  • Supercritical Water Oxidation is mainly used for the treatment of organic waste. It has a fast reaction speed, thorough treatment, no secondary pollution and meets the requirements of full closure. Because supercritical water has special properties, such as: weak hydrogen bonds, similar to the dielectric constant of non-polar organic solvents, high diffusion coefficient, low viscosity, etc., enabling it to interact with non-polar molecules (such as air, oxygen and) Miscible at any ratio, the phase interface disappears, thereby eliminating mass transfer resistance, causing the organic matter and oxygen to rapidly decompose in the supercritical water to decompose.
  • SWPO Supercritical Water Partial Oxidation
  • Supercritical Water Gasification is a process in which organic matter is decomposed and gasified in a supercritical water environment without oxidant, and a hydrogen-based flammable gas is produced. This process not only has a fast reaction rate, but also recovers the heat of the system and produces a high-pressure gas that is easy to transport.
  • an object of the present invention is to provide a supercritical salt-salting desalter for treating a salty wastewater.
  • a supercritical salt-salting desalter for treating salty wastewater comprising a straight cylinder, an end cover disposed at an upper end of the straight cylinder, and a conical head disposed at a lower end of the straight cylinder, wherein the tubular wall of the straight cylinder
  • the inner and outer layers form an annular cavity on the inner side of the outer cylinder wall and the outer side of the inner cylinder wall, the inner side of the inner cylinder wall constitutes an inner cavity, and the desalted fluid outlet is connected to the inner cavity on the end cover;
  • the salt-containing fluid is disposed on the outer upper part of the outer cylinder wall
  • the inlet is connected to the annular cavity, a rotating filter cylinder is arranged at the lower end of the inner cylinder wall, a scraper is arranged outside the rotary filter cylinder, a solid salt outlet is arranged at the bottom of the conical head, and a bracket is arranged at the upper part of the straight cylinder to pass one through the
  • the end cover is provided with a pressure gauge and a safety port.
  • a backwash inlet communication lumen may also be provided on the end cap.
  • a dynamic seal is arranged between the rotary filter cartridge and the axial direction of the inner cylinder wall.
  • a portion of the upper end of the rotating shaft that protrudes from the end cover and the speed reducer is provided with a cooling water jacket.
  • the rotary filter cylinder is made of a high temperature corrosion resistant metal to form a wedge structure.
  • the advantage of the salt-removing device of the present invention is that it is disposed between the subcritical region and the supercritical region of the supercritical water treatment system, and the inorganic salt has high solubility in the subcritical region and is almost insoluble in the supercritical region. , the inorganic salt is precipitated and removed in the supercritical region.
  • the rotating filter cartridge is matched with the scraper to filter and remove the precipitated inorganic salt, which can effectively prevent the inorganic salt from being in the system. Deposition and corrosion of subsequent systems.
  • FIG. 1 is a schematic view showing the structure of a supercritical salt-salting desalter for treating a salty wastewater according to the present invention.
  • a supercritical salt-salting desalter for treating salty wastewater mainly comprises three parts: an end cap, a cylinder body and a conical head.
  • the conical head is arranged at the lower end of the straight cylinder, and the end cap is arranged at the upper end of the straight cylinder.
  • the wall of the tube is divided into two layers inside and outside.
  • the outer tube wall and the inner tube wall 13 form an annular cavity, and the inner tube wall constitutes an inner cavity.
  • the heated subcritical fluid conducts a flow and separates the fluid before and after desalting. Cooling water jacket at the upper end of the end cap
  • the lower end of the cooling water jacket 3 is provided with a speed reducer 2 and an electric motor 1, and a rotating shaft 12 is disposed through the entire shaft of the desalter.
  • the upper end cover is provided with a pressure gauge interface 10 and a safety port 11 and a desalting fluid outlet 16 and a backwashing inlet 5 a positioning bracket 6 is disposed at an upper end of the rotating shaft at the upper portion of the straight cylinder, a salt-containing fluid inlet 7 is disposed at an upper sidewall of the straight cylinder, and a rotating filter cylinder 15 is disposed at a lower end of the inner cylinder wall 13.
  • the rotating filter cylinder is connected to the lower end of the rotating shaft, and the inner cylinder wall
  • a dynamic seal 14 is provided between the axial direction of the rotary filter cartridge 15 and the rotary filter cartridge 15 to ensure that the rotary filter cartridge does not leak between the inner cylinder wall and the rotary filter cartridge during rotation.
  • a scraper 8 is disposed between the inside of the outer cylinder wall and the rotary filter cylinder 15, and the scraper is fixed to the outside of the rotary filter cylinder and is close to the inner side of the outer cylinder wall.
  • a solid salt outlet 9 is placed at the bottom of the conical head.
  • the salt desalter is a desalination device of a supercritical water treatment system, located between the subcritical to supercritical state of the supercritical water treatment system, avoiding the deposition of inorganic salts in the system and the corrosion of subsequent systems.
  • the heating device (such as furnace heating or electric heating) disposed outside the outer cylinder wall during heating is heated and heated, and when flowing to the rotary filter cylinder 15, the salt-containing fluid reaches a supercritical state, and solid salt is precipitated.
  • the rotating filter cartridge 15 is trapped outside the rotating filter cartridge (the lower portion of the annular cavity), and the clean fluid passes through the rotating filter cartridge 15, and the inner cavity formed along the inner cylinder wall passes through from the bottom to the top, and the desalting fluid from the upper end cap
  • the outlet 12 flows out.
  • the motor drives the speed reducer, and the rotary filter cylinder 15 is rotated by the rotating shaft.
  • the pressure gauge connected to the top of the pressure gauge interface is used to monitor the internal pressure of the desalter and set a safety raft for safe control of the desalter.
  • the rotary filter cartridge 15 is formed of a high-temperature corrosion-resistant metal in a wedge-shaped structure.
  • the cooling water jacket 3 is provided on the portion of the shaft extending from the end cover to the speed reducer to ensure that the motor does not stop due to overheating.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

Disclosed is a supercritical salting-out and desalting device for treatment of salt-containing wastewater, comprising a straight cylinder body, an end cover disposed at an upper end portion of the straight cylinder body, and a conical head disposed at a lower end portion of the straight cylinder body. The cylinder wall of the straight cylinder body is divided into inner and outer layers, an annular gap being defined by an inner side of the outer cylinder wall and an outer side of the inner cylinder wall, and a cavity being defined by an inner side of the inner cylinder wall. The end cover is provided with a salt-containing fluid outlet in communication with the cavity. An upper portion of an outer side of the outer cylinder wall is provided with a salt-containing fluid inlet in communication with the annular gap. A lower end of the inner cylinder wall is provided with a rotary filter cartridge. A scraper is disposed on an outer side of the rotary filter cartridge. The bottom of the conical head is provided with a solid salt outlet. A support is disposed at an upper portion inside the straight cylinder body, to fix a rotary shaft running through the axis of the straight cylinder body. A lower end of the rotary shaft is connected to the rotary filter cartridge. A part, extending out of the end cover, of an upper end of the rotary shaft is connected to a reduction gear by a magnetic seal.

Description

说 书 含盐废水处理用超临界析盐脱盐器 技术领域  Supercritical salt-salting desalter for salty wastewater treatment
本发明涉及含盐废水脱盐装置， 特别涉及一种含盐废水处理用超临界析 盐脱盐 ¾^ 背景技术  The invention relates to a salt-containing wastewater desalination device, in particular to a supercritical salt-salting desalination treatment for salty wastewater treatment.
有机物超临界水处理技术由超临界水氧化技术、 超临界水部分氧化技术 和超临界水气化技术三项技术构成。  The organic supercritical water treatment technology consists of three technologies: supercritical water oxidation technology, supercritical water partial oxidation technology and supercritical water gasification technology.
超临界水氧化技术 (Supercritical Water Oxidation, 简称 SCWO)主要应用于 有机废物的处理， 具有反应速度快、 处理彻底， 无二次污染且符合全封闭的 要求。 由于超临界水具有特殊的性质， 如： 氢键弱， 近似于非极性有机溶剂 的介电常数， 高扩散系数， 低粘度等， 使其能与非极性分子 （如空气、 氧气 和） 以任意比例混溶， 相界面消失， 进而消除传质阻力， 使有机物和氧在超 临界水中迅速发生氧化反应而分解。  Supercritical Water Oxidation (SCWO) is mainly used for the treatment of organic waste. It has a fast reaction speed, thorough treatment, no secondary pollution and meets the requirements of full closure. Because supercritical water has special properties, such as: weak hydrogen bonds, similar to the dielectric constant of non-polar organic solvents, high diffusion coefficient, low viscosity, etc., enabling it to interact with non-polar molecules (such as air, oxygen and) Miscible at any ratio, the phase interface disappears, thereby eliminating mass transfer resistance, causing the organic matter and oxygen to rapidly decompose in the supercritical water to decompose.
超临界水部分氧化技术 (Supercritical Water Partial Oxidation,简称 SWPO)， 指在反应中提供的氧化剂的量低于有机物完全氧化所需要的量， 既能氧化分 解难降解有机物又能产生氢气， 同时实现了有机污染物的无害化处理和资源 化利用， 还有效抑制了气化反应中焦油的产生。  Supercritical Water Partial Oxidation (SWPO) means that the amount of oxidant provided in the reaction is lower than that required for complete oxidation of organic matter, which can oxidize and decompose refractory organic matter and hydrogen. The harmless treatment and resource utilization of organic pollutants also effectively inhibit the production of tar in the gasification reaction.
超临界水气化技术 (Supercritical Water Gasification,简称 SCWG)是有机物 在无氧化剂的超临界水环境中进行分解气化， 并生成以氢气为主的可燃性气 体的过程。 该过程不仅反应速度快、 能回收系统热能且产生便于输送的高压 气体。  Supercritical Water Gasification (SCWG) is a process in which organic matter is decomposed and gasified in a supercritical water environment without oxidant, and a hydrogen-based flammable gas is produced. This process not only has a fast reaction rate, but also recovers the heat of the system and produces a high-pressure gas that is easy to transport.
但无机盐几乎不溶于超临界水， 因此， 用超临界水处理技术在处理高含 盐物料时， 现有的脱盐装置由于盐沉积容易所造成的系统堵塞以及传热恶化， 同时增加了盐对后续系统的腐蚀， 从而提高了系统投资成本。 发明内容  However, inorganic salts are almost insoluble in supercritical water. Therefore, when super-critical water treatment technology is used to treat high-salt materials, the existing desalination device is clogging and heat transfer due to salt deposition, and the salt is added. Corrosion of subsequent systems increases system investment costs. Summary of the invention
针对现有的超临界水处理系统在脱盐方面存在的缺陷或不足， 本发明的 目的在于提供一种含盐废水处理用超临界析盐脱盐器。  In view of the defects or deficiencies in the desalination of the existing supercritical water treatment system, an object of the present invention is to provide a supercritical salt-salting desalter for treating a salty wastewater.
为了达到上述目的， 本发明是采取如下技术方案予以实现的： 一种含盐废水处理用超临界析盐脱盐器， 包括直筒体、 设置在直筒体上 端部的端盖、 设置在直筒体下端部的锥形封头， 其特征在于， 直筒体的筒壁 分为内、 外两层， 外筒壁内侧与内筒壁外侧组成环形腔隙， 内筒壁内侧构成 内腔， 在端盖上设置脱盐流体出口连通内腔； 在外筒壁外侧上部设置含盐流 体入口连通环形腔隙， 在内筒壁下端设置旋转过滤筒， 在旋转过滤筒外侧设 置有刮刀， 在锥形封头底部设置固体盐出口， 在直筒体内上部设置有支架将 一根贯穿直筒体轴心的转轴固定， 转轴下端连接旋转过滤筒， 转轴上端伸出 端盖部分通过磁力封与减速器连接。 In order to achieve the above object, the present invention is implemented by the following technical solutions: A supercritical salt-salting desalter for treating salty wastewater, comprising a straight cylinder, an end cover disposed at an upper end of the straight cylinder, and a conical head disposed at a lower end of the straight cylinder, wherein the tubular wall of the straight cylinder The inner and outer layers form an annular cavity on the inner side of the outer cylinder wall and the outer side of the inner cylinder wall, the inner side of the inner cylinder wall constitutes an inner cavity, and the desalted fluid outlet is connected to the inner cavity on the end cover; the salt-containing fluid is disposed on the outer upper part of the outer cylinder wall The inlet is connected to the annular cavity, a rotating filter cylinder is arranged at the lower end of the inner cylinder wall, a scraper is arranged outside the rotary filter cylinder, a solid salt outlet is arranged at the bottom of the conical head, and a bracket is arranged at the upper part of the straight cylinder to pass one through the straight shaft The rotating shaft of the core is fixed, and the lower end of the rotating shaft is connected with the rotating filter cylinder, and the upper end portion of the rotating shaft is connected with the reducer through a magnetic seal.
上述方案中， 所述端盖上设置有压力表和安全闽接口。 所述端盖上还可 设置反冲洗入口连通内腔。 所述旋转过滤筒与内筒壁轴向之间设有动密封。 所述转轴上端伸出端盖与减速器连接的部分设置有冷却水套。 所述旋转过滤 筒采用高温耐蚀金属制成楔形结构。  In the above solution, the end cover is provided with a pressure gauge and a safety port. A backwash inlet communication lumen may also be provided on the end cap. A dynamic seal is arranged between the rotary filter cartridge and the axial direction of the inner cylinder wall. A portion of the upper end of the rotating shaft that protrudes from the end cover and the speed reducer is provided with a cooling water jacket. The rotary filter cylinder is made of a high temperature corrosion resistant metal to form a wedge structure.
本发明析盐脱盐器的优点是， 设置在超临界水处理系统的亚临界区至超 临界区之间， 利用无机盐在亚临界区具有较高的溶解度， 而在超临界区几乎 不溶的特点， 使无机盐在超临界区析出并脱除。 通过设置内外筒壁对待加热 的亚临界流体进行导流并隔开脱盐前后的流体， 采用旋转过滤筒与刮刀配合， 对析出的无机盐进行过滤移除， 可有效的防止无机盐在系统中的沉积以及对 后续系统的腐蚀。 附图说明  The advantage of the salt-removing device of the present invention is that it is disposed between the subcritical region and the supercritical region of the supercritical water treatment system, and the inorganic salt has high solubility in the subcritical region and is almost insoluble in the supercritical region. , the inorganic salt is precipitated and removed in the supercritical region. By setting the inner and outer cylinder wall to conduct the subcritical fluid to be heated and separating the fluid before and after desalination, the rotating filter cartridge is matched with the scraper to filter and remove the precipitated inorganic salt, which can effectively prevent the inorganic salt from being in the system. Deposition and corrosion of subsequent systems. DRAWINGS
下面结合附图和具体实施方式对本发明做进一歩详细说明。  The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.
图 1是本发明的含盐废水处理用超临界析盐脱盐器的结构示意图。  BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the structure of a supercritical salt-salting desalter for treating a salty wastewater according to the present invention.
图中： 1、 电动机； 2、 减速器； 3、 冷却水套； 4、 磁力密封； 5、 反冲洗 水入口； 6、 上端定位支架； 7、 含盐流体入口； 8、 刮刀； 9、 固体盐出口； 10、 压力表接口； 11、 安全闽接口； 12、 转轴； 13、 内筒壁； 14、 动密封； 15、 旋转过滤筒； 16、 脱盐流体出口。 具体实施方式  In the figure: 1, motor; 2, reducer; 3, cooling water jacket; 4, magnetic seal; 5, backwash water inlet; 6, upper positioning bracket; 7, salt fluid inlet; 8, scraper; 9, solid Salt outlet; 10, pressure gauge interface; 11, safety 闽 interface; 12, rotating shaft; 13, inner cylinder wall; 14, dynamic seal; 15, rotating filter cartridge; 16, desalting fluid outlet. detailed description
参照图 1， 含盐废水处理用超临界析盐脱盐器， 主要包括端盖、 筒体和锥 形封头三部分， 锥形封头设置在直筒体下端， 端盖设置在直筒体的上端， 筒 壁分为内外两层， 外筒壁与内筒壁 13组成环形腔隙， 内筒壁构成内腔， 对待 加热的亚临界流体进行导流并隔开脱盐前后的流体。 端盖上端设置冷却水套Referring to Fig. 1, a supercritical salt-salting desalter for treating salty wastewater mainly comprises three parts: an end cap, a cylinder body and a conical head. The conical head is arranged at the lower end of the straight cylinder, and the end cap is arranged at the upper end of the straight cylinder. The wall of the tube is divided into two layers inside and outside. The outer tube wall and the inner tube wall 13 form an annular cavity, and the inner tube wall constitutes an inner cavity. The heated subcritical fluid conducts a flow and separates the fluid before and after desalting. Cooling water jacket at the upper end of the end cap
3， 冷却水套 3上端设置减速器 2及电动机 1， 贯穿整个脱盐器轴心设置转轴 12， 上端盖上设置有压力表接口 10和安全闽接口 11， 和脱盐流体出口 16和 反冲洗入口 5， 在直筒体上部的转轴的上端设置定位支架 6， 在直筒体上部侧 壁设置含盐流体入口 7， 在内筒壁 13下端设置旋转过滤筒 15， 旋转过滤筒与 转轴下端相连， 内筒壁 13与旋转过滤筒 15轴向之间设有动密封 14， 可确保 旋转过滤筒在旋转时内筒壁与旋转过滤筒间不泄露。 在外筒壁内部与旋转过 滤筒 15之间设置刮刀 8， 刮刀固定在旋转过滤筒外侧， 并与外筒壁内侧贴近。 在锥形封头底部设置固体盐出口 9。 3. The lower end of the cooling water jacket 3 is provided with a speed reducer 2 and an electric motor 1, and a rotating shaft 12 is disposed through the entire shaft of the desalter. The upper end cover is provided with a pressure gauge interface 10 and a safety port 11 and a desalting fluid outlet 16 and a backwashing inlet 5 a positioning bracket 6 is disposed at an upper end of the rotating shaft at the upper portion of the straight cylinder, a salt-containing fluid inlet 7 is disposed at an upper sidewall of the straight cylinder, and a rotating filter cylinder 15 is disposed at a lower end of the inner cylinder wall 13. The rotating filter cylinder is connected to the lower end of the rotating shaft, and the inner cylinder wall A dynamic seal 14 is provided between the axial direction of the rotary filter cartridge 15 and the rotary filter cartridge 15 to ensure that the rotary filter cartridge does not leak between the inner cylinder wall and the rotary filter cartridge during rotation. A scraper 8 is disposed between the inside of the outer cylinder wall and the rotary filter cylinder 15, and the scraper is fixed to the outside of the rotary filter cylinder and is close to the inner side of the outer cylinder wall. A solid salt outlet 9 is placed at the bottom of the conical head.
本发明的工作原理： 析盐脱盐器属于超临界水处理系统的脱盐装置， 位 于超临界水处理系统的亚临界至超临界状态之间， 避免无机盐在系统中的沉 积以及对后续系统的腐蚀。亚超临界的含盐流体，处于临界点（温度 =374.15°C、 压力 =22.05MPa) 以下， 具有较高的溶解度， 经含盐流体入口 7进入脱盐器， 经内外筒壁组成的环形腔隙自上而下流过， 流下过程中被设置在外筒壁外的 加热装置 （如燃炉加热或电加热） 加热升温， 流至旋转过滤筒 15处时， 含盐 流体达到超临界状态，固体盐析出并被旋转过滤筒 15截留在旋转过滤筒外 (环 形腔隙下部）， 而干净流体穿过旋转过滤筒 15， 沿内筒壁形成的内腔自下而上 穿过， 从上端盖的脱盐流体出口 12流出。 过滤一定时间后， 启动电动机驱动 减速器， 由转轴带动旋转过滤筒 15旋转， 此时截留在环形腔隙下部的固体盐 被刮刀 8刮落至底部锥形封头腔内， 经固体盐出口 9排出。 反冲洗水经反冲 洗入口 5进入脱盐器内， 对脱盐器进行清洗。  The working principle of the invention: The salt desalter is a desalination device of a supercritical water treatment system, located between the subcritical to supercritical state of the supercritical water treatment system, avoiding the deposition of inorganic salts in the system and the corrosion of subsequent systems. . The sub-supercritical salt-containing fluid is at a critical point (temperature = 374.15 ° C, pressure = 22.05 MPa), has a high solubility, enters the desalter via the salt-containing fluid inlet 7, and has an annular cavity formed by the inner and outer cylinder walls. Flowing from top to bottom, the heating device (such as furnace heating or electric heating) disposed outside the outer cylinder wall during heating is heated and heated, and when flowing to the rotary filter cylinder 15, the salt-containing fluid reaches a supercritical state, and solid salt is precipitated. And the rotating filter cartridge 15 is trapped outside the rotating filter cartridge (the lower portion of the annular cavity), and the clean fluid passes through the rotating filter cartridge 15, and the inner cavity formed along the inner cylinder wall passes through from the bottom to the top, and the desalting fluid from the upper end cap The outlet 12 flows out. After filtering for a certain period of time, the motor drives the speed reducer, and the rotary filter cylinder 15 is rotated by the rotating shaft. At this time, the solid salt trapped in the lower part of the annular cavity is scraped off by the scraper 8 into the bottom conical head cavity, through the solid salt outlet 9 discharge. The backwash water is washed back into the desalter by backwashing the inlet 5 and the desalter is cleaned.
在本实施例中， 顶端的压力表接口所接压力表用于监测脱盐器内部压力， 并设置安全闽进行脱盐器安全控制。 旋转过滤筒 15采用高温耐蚀金属制成楔 形结构。转轴伸出端盖与减速器连接的部分设置冷却水套 3， 可保证电动机不 因超温而停机。  In this embodiment, the pressure gauge connected to the top of the pressure gauge interface is used to monitor the internal pressure of the desalter and set a safety raft for safe control of the desalter. The rotary filter cartridge 15 is formed of a high-temperature corrosion-resistant metal in a wedge-shaped structure. The cooling water jacket 3 is provided on the portion of the shaft extending from the end cover to the speed reducer to ensure that the motor does not stop due to overheating.

Claims

权 利 要 求 书 Claim
1、 一种含盐废水处理用超临界析盐脱盐器， 包括直筒体、 设置在直筒体 上端部的端盖、 设置在直筒体下端部的锥形封头， 其特征在于， 直筒体的筒 壁分为内、 外两层， 外筒壁内侧与内筒壁外侧组成环形腔隙， 内筒壁内侧构 成内腔， 在端盖上设置脱盐流体出口连通内腔； 在外筒壁外侧上部设置含盐 流体入口连通环形腔隙， 在内筒壁下端设置旋转过滤筒， 在旋转过滤筒外侧 设置有刮刀， 在锥形封头底部设置固体盐出口， 在直筒体内上部设置有支架 将一根贯穿直筒体轴心的转轴固定， 转轴下端连接旋转过滤筒， 转轴上端伸 出端盖部分通过磁力封与减速器连接。 A supercritical salt-salting desalter for treating a salty wastewater, comprising a straight cylinder, an end cap disposed at an upper end of the straight cylinder, and a conical head disposed at a lower end of the straight cylinder, wherein the cylinder of the straight cylinder The wall is divided into inner and outer layers, the inner side of the outer tube wall and the outer side of the inner tube wall form an annular cavity, the inner side of the inner tube wall constitutes an inner cavity, and the desalted fluid outlet is connected to the inner cavity on the end cover; The salt fluid inlet communicates with the annular cavity, a rotary filter cartridge is arranged at the lower end of the inner cylinder wall, a scraper is arranged outside the rotary filter cartridge, a solid salt outlet is arranged at the bottom of the tapered seal, and a bracket is arranged at the upper part of the straight cylinder to pass through the straight cylinder The rotating shaft of the body axis is fixed, and the lower end of the rotating shaft is connected with the rotating filter cylinder, and the upper end portion of the rotating shaft is connected with the reducer through a magnetic seal.
2、如权利要求 1所述的含盐废水处理用超临界析盐脱盐器，其特征在于， 所述端盖上设置有压力表和安全闽接口。  The supercritical salt stripping desalter for treating salty wastewater according to claim 1, wherein the end cap is provided with a pressure gauge and a safety port.
3、如权利要求 1所述的含盐废水处理用超临界析盐脱盐器，其特征在于， 所述端盖上设置反冲洗入口连通内腔。  The supercritical salt-salting desalter for treating salty wastewater according to claim 1, wherein the end cap is provided with a backwash inlet communicating with the inner cavity.
4、如权利要求 1所述的含盐废水处理用超临界析盐脱盐器，其特征在于， 所述旋转过滤筒与内筒壁轴向之间设有动密封。  The supercritical salt-salting desalter for treating a salty wastewater according to claim 1, wherein a dynamic seal is provided between the rotary filter cylinder and the axial direction of the inner cylinder wall.
5、如权利要求 1所述的含盐废水处理用超临界析盐脱盐器，其特征在于， 所述旋转过滤筒采用高温耐蚀金属制成楔形结构。  The supercritical salt-salting desalter for treating a salty wastewater according to claim 1, wherein the rotary filter cartridge is formed of a high-temperature corrosion-resistant metal and has a wedge-shaped structure.
PCT/CN2012/085893 2012-04-23 2012-12-05 Supercritical salting-out and desalting device for treatment of salt-containing wastewater WO2013159535A1 (en)

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