4results about How to "Dosing is simple" patented technology

The invention discloses a sodium lignin sulfonate-based multifunctional scale inhibitor as well as a preparation method and application thereof, and belongs to the technical field of macromolecular water treatment. The scale inhibitor has a structural general formula shown in the specification. In addition, the invention also provides a preparation method of the scale inhibitor, which comprises the following steps: S1, mixing maleic anhydride with the first solvent, then continuously mixing with sodium lignin sulfonate, and then reacting in a water bath at 60-70 DEG C to obtain an SL-MA solution; s2, adding imidazoline and formaldehyde into the SL-MA solution, and reacting at 40 to 50 DEG C to obtain an SL-MA-KIL solution; and S3, adding itaconic acid and an initiator into the SL-MA-KIL solution, and reacting at 80-90 DEG C to obtain the scale inhibitor. The scale inhibitor provided by the invention has excellent scale inhibition performance.

The invention discloses an on-line blending-free variable-viscosity high-resistance-reduction retarded acid, and according to an on-line blending-free variable-viscosity high-resistance-reduction retarded acid system provided by the invention, the performance of an acid solution can be changed by changing the dosage of a medicament, and the preparation in advance is not needed. The film coating agent can form an adsorption film on the surface of the rock, and the existence of the adsorption film blocks the contact between H < + > and the rock, so that the acid-rock reaction rate is slowed down. In addition, the retarding agent also has multiple composite retarding performance, the characteristics of foam retarding acid and gelling retarding acid are combined, and the rate of acid-rock reaction is greatly reduced under the double retarding action of tackifying retarding of the multi-effect agent and blocking retarding of the film coating agent. In addition to a good tackifying effect, the tackifying agent also has excellent resistance reducing performance and is multipurpose, and the dosage and types of additives are reduced. Meanwhile, the resistance reduction rate of the system reaches 85% or above and is far better than 70% of that of a traditional system.

The invention provides an efficient composite sludge dewatering conditioner and a preparation and use method thereof, and belongs to the technical field of sludge treatment agents, the sludge dewatering conditioner comprises poly dimethyl diallyl ammonium chloride, a polyferric sulfate solution, sodium percarbonate particles and slag porous particles; the polymeric ferric sulfate solution is a liquid with the effective iron content of 6-16%; the poly dimethyl diallyl ammonium chloride and the polymeric ferric sulfate solution are subjected to a mixed reaction under the heating condition according to the weight ratio of 1: (12-20), and a copolymer of poly dimethyl diallyl ammonium chloride and polymeric ferric sulfate is obtained; a copolymer is generated through a mixing reaction, sodium percarbonate particles and slag porous particles are added while stirring is conducted, and a finished product is obtained after sufficient and uniform mixing is conducted. The sludge water content can be reduced, the sludge increment is small, the use method is simple and convenient, the volume and the amount of the sludge are greatly reduced, the cost is low, and the method is environment-friendly.

The application discloses an online mixing-free variable-viscosity high-resistance-slowing acid, and provides an online mixing-free variable-viscosity high-resistance-slowing acid system, wherein the performance of acid liquid can be changed by changing the adding amount of the agent, and the acid liquid does not need to be prepared in advance. The film-forming agent can form an adsorption film on the surface of rock, and the adsorption film blocks the contact between H+ and rock, thereby slowing the acid-rock reaction rate. The application also has multiple composite slow-down performances, and combines the characteristics of foam slow-down acid and gelling slow-down acid. Through the thickening and slowing down of the multiple-effect agent and the blocking and slowing down of the film-forming agent, the acid-rock reaction rate is greatly reduced under the double slow-down effect of the two. In addition to the good thickening effect, the application also has excellent resistance-reducing performance, and one agent is used for multiple purposes to reduce the adding amount and type of the additive. Meanwhile, the resistance-reducing rate of the system reaches more than 85%, which is much higher than the 70% of the traditional system.