CN201006401Y

CN201006401Y - Membrane separation device for removing sulfate radical form salt solution

Info

Publication number: CN201006401Y
Application number: CNU2007200951587U
Authority: CN
Inventors: 叶明�; 邹剑昆
Original assignee: TIANJIN WEIDETAIKE PETRIFICATION SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: TIANJIN WEIDETAIKE PETRIFICATION SCIENCE AND TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2007-02-02
Filing date: 2007-02-02
Publication date: 2008-01-16
Anticipated expiration: 2017-02-02

Abstract

The utility model relates to a membrane separator for using salt water to remove sulfate radical, comprising a salt water tube and a membrane separating element, wherein the membrane separating element is arranged as one-stage multi-segment type with large head and small tail, the first section has most membrane elements, and the last section has minimum membrane elements, each section of membrane separating element comprises a membrane element, an inlet tube, a penetrate tube, and a concentrate tube, the inlet tube of the first section is connected with a high-pressure salt water pump, the front concentrate tube is connected with the next inlet tube, the last concentrate tube is connected with the first inlet tube and a circulating tube, each penetrate tube is connected with a total penetrate tube. The utility model can improve the sodium sulfate content of concentrate liquid, keep pressure stable on membrane element, control the circulation of concentrate liquid, adjust the flow speed of membrane surface, taper arrange the membrane elements, and partly circulate the concentrate liquid, to utilize the treatment ability of membrane completely, and reduce the membrane element.

Description

Salt solution removes the membrane separation device of sulfate radical

Technical field

This novel practical relates to the membrane separation device that salt solution removes sulfate radical, and especially high concentration salt solution removes the membrane separation device of sulfate radical.

Background technology

At present, the conventional method that removes sulfate radical in the salt solution is barium method, calcium method, freezing.Barium method and calcium method are that freezing is that cooling makes sulfate radical separate out with the form of sal glauberi, reaches the purpose that removes sulfate radical with the form precipitation of sulfate radical with barium sulfate and calcium sulfate.Wherein, barium method operating cost height, barium sulfate precipitate causes environmental pollution; The operation of calcium method is wayward, and separating effect is low; Freezing power consumption is big, and initial investment is big, the operating cost height.

Now, external producer has begun to utilize the stalling characteristic of film to remove sulfate anion in brine system.Compare with conventional method, film device has low, easy and simple to handle, the free of contamination advantage of operating cost, is admitted by domestic enterprise.In order to remove the sulfate radical in the salt solution, present film device adopts one-level multistage or multistage structure concentrated vitriol root.The former, the concentrate of the last period is the feeding liquid of next section, and the concentrate of final stage is final concentrate, and each section penetrating fluid treating capacity is big, concentrate the concentration height, but downstream components flow velocity and pressure is low, influence separating effect; The latter, velocity pressure at different levels are adjustable, and concentrated effect is optimized, but the increase of each section load, the increase membrane module causes strengthening investment, afterbody membrane module load maximum, and the life-span is extremely low.

Crossflow velocity and pressure are very big to the influence of membrane separating effect, and wherein crossflow velocity is too high can produce mechanical damage to the film surface, crosses the low concentration extreme differenceization that then produces, and reduces infiltration capacity; Hypotony also can reduce the infiltration capacity of film.

Summary of the invention

In order to optimize film device separating effect and economic benefit, the utility model provides a kind of membrane separation device, and this membrane separation device has not only guaranteed separating effect and service life, and uses less membrane module.

Salt solution removes the membrane separation device of sulfate radical, comprises brine pipeline and membrane separation assemblies; It is characterized in that salt solution being sent into membrane separation assemblies by pump, membrane separation assemblies is arranged according to the one-level multisection type form of more moneys on exhibit and lesser moneys on counterfoil, first section membrane module quantity is maximum, successively decrease successively, every section membrane separation assemblies comprises membrane module, the feeding liquid pipeline, permeate conduits, the concentrate pipeline, the feeding liquid pipeline of first section membrane module links to each other with the high pressure brine pump, the concentrate pipeline of the last period links to each other with the feeding liquid pipeline of next section, the concentrate pipeline of final stage links to each other with circulating line with the feeding liquid pipeline of first section membrane module, and every section permeate conduits links to each other with total permeate conduits.

The utility model is taked the one-level multisection type membrane module spread pattern of approximate taper, and the concentrate part circulatory system, and to reach: (1) along with the sodium sulphate content of concentrate raises, the pressure of membrane module is kept stable; (2) internal circulating load of control concentrate, the size that can regulate crossflow velocity; (3) part of the countersunk arrangement of membrane module and concentrate circulates, and gives full play to the disposal ability of film, has reduced the quantity of using membrane module.

Description of drawings

Fig. 1: embodiment 1 membrane separation device schematic diagram;

Fig. 2: embodiment 2 membrane separation device schematic diagrames;

Fig. 3: embodiment 3 membrane separation device schematic diagrames.

Wherein: 1 first section feeding pipeline, 2 first sections membrane modules, 3 first sections concentrate pipelines, 4 first sections permeate conduits, 5 second sections membrane modules, 6 second sections concentrate pipelines, 7 second sections permeate conduits, 8 the 3rd sections membrane modules, 9 the 3rd sections concentrate pipelines, 10 the 3rd sections permeate conduits, 11 total permeate discharge pipelines

The specific embodiment

Embodiment 1:

As shown in Figure 1, membrane module is assembled according to " 3-2-1 " mode in the film device, salt solution is by being pumped into the first section feeding pipeline 1, enter first section membrane module 2 then, first section concentrate enters second section membrane module 5 by first section concentrate pipeline 3, second section concentrate enters the 3rd section membrane module 8 by second section concentrate pipeline 7, the 3rd section concentrate sent membrane treatment appts by the 3rd section concentrate pipeline 9, and first section permeate conduits 4, first section permeate conduits 7, first section permeate conduits 10 all link to each other with total permeate conduits.

Handling NaCl concentration is 160g/L, SO ₄ ²-concentration is the mixed salt of 40g/L, and flow is 10m ³/ L, the operation operating pressure is 2MPa, obtains concentrating SO in the salt solution ₄ ^2-Concentration is 57.3g/L, SO in the infiltration salt solution ₄ ^2-Concentration is 2.4g/L, SO ₄ ^2-Removal efficiency be 90.8%.

Embodiment 2:

As shown in Figure 2, different is to adopt according to " 2-1 " mode to assemble with embodiment 1.

Embodiment 3:

As shown in Figure 3, different is to adopt according to " 4-2 " mode to assemble with embodiment 1.

According to the assembling mode of

embodiment

1 and 2 and 3, the effect of handling salt solution is as follows:

Example	Condition	Arrangement mode	Feed brine	Concentrate salt solution	Infiltration salt solution	SO ₄ ^2-Removal efficiency (%)
Example	Condition	Arrangement mode	Feed brine	Concentrate salt solution	Infiltration salt solution	SO ₄ ^2-Removal efficiency (%)	?1	The pH value is 3, and temperature is 35, and pressure is 2MPa	?3-2 ?-1	SO ₄ ^2-Concentration is 40g/L, and NaCl concentration is 160g/L	SO ₄ ^2-Concentration is 57.3g/L	SO ₄ ^2-Concentration is 2.4g/L	?90.8
?2	The pH value is 4, and temperature is 40, and pressure is 3MPa	?2-1	SO ₄ ^2-Concentration is 8g/L, and NaCl concentration is 170g/L	SO ₄ ^2-Concentration is 15.9g/L	SO ₄ ^2-Concentration is 1.0g/L	?94.3	?1		?3-2 ?-1		SO ₄ ^2-Concentration is 57.3g/L	SO ₄ ^2-Concentration is 2.4g/L	?90.8
?2		?2-1		SO ₄ ^2-Concentration is 15.9g/L	SO ₄ ^2-Concentration is 1.0g/L	?94.3	?3	The pH value is 4, and temperature is 40, and pressure is 1.5MPa	?4-2	SO ₄ ^2-Concentration is 15g/L, and NaCl concentration is 160g/L	SO ₄ ^2-Concentration is 18.8g/L	SO ₄ ^2-Concentration is 0.7g/L	?94.2

The salt solution that the utility model proposes removes the membrane separation device of sulfate radical, be described by embodiment, person skilled obviously can be changed or suitably change and combination preparation method as herein described in not breaking away from the utility model content, spirit and scope, realizes the utility model technology.Special needs to be pointed out is, the replacement that all are similar and change apparent to those skilled in the artly, they are regarded as being included in the utility model spirit, scope and the content.

Claims

1. a salt solution removes the membrane separation device of sulfate radical, comprises brine pipeline and membrane separation assemblies; It is characterized in that salt solution being sent into membrane separation assemblies by pump, membrane separation assemblies is arranged according to the one-level multisection type form of more moneys on exhibit and lesser moneys on counterfoil, first section membrane module quantity is maximum, successively decrease successively, every section membrane separation assemblies comprises membrane module, the feeding liquid pipeline, permeate conduits, the concentrate pipeline, the feeding liquid pipeline of first section membrane module links to each other with the high pressure brine pump, the concentrate pipeline of the last period links to each other with the feeding liquid pipeline of next section, the concentrate pipeline of final stage links to each other with circulating line with the feeding liquid pipeline of first section membrane module, and every section permeate conduits links to each other with total permeate conduits.