36results about How to "Reliable technical solution" patented technology

This invention relates to a method for realizing crossing over NAT equipments by external users including: after registering successfully to a net-guard, a GW in a private net sends a request for connecting the call signaling to the net-guard to set up related TCP connection and store it, then, when an external user calls the user under the GW of the private net, the net-guard sends the received call message to the user under the GW of the private net via the stored TCP connection corresponding to said GW, therefore, when an external net calling user calls the private net user connected with H323 GW under the NAT device, this invention can ensure it to call the called private net user smoothly via the net-guard and related TCP connection.

The invention discloses a sludge treatment device, which belongs to the technical field of sludge treatment. The technical scheme of the present invention is: a sludge treatment device, comprising a machine base, a sludge treatment drum, a power drive mechanism, an output pipeline and a hood, the special feature of which is that the sludge treatment device includes at least heavy metals The treatment drum, the carbonization drum and the fixed carbon combustion drum consist of three coaxial sleeves from the inside to the outside. Compared with the prior art, the present invention is a new sludge treatment with reliable technical scheme, no secondary pollution, high investment efficiency and quick effect. The device is with outstanding substantive features and remarkable progress.

The invention relates to a recovery method of an electrode discharge solution in a high-magnesium solution electrodialysis lithium extraction process. The method comprises the following steps: mixing the electrode discharge solution generated in the electrodialysis lithium extraction process with a NaHSO3 or Na2SO3 solution, and reacting for 2-5 minutes to obtain a dechlorinated solution of which the free chlorine content is less than 0.1 mg / L; by using the dechlorinated solution as a desalting raw solution, carrying out concentration by a one-step or two-stage ion exchange membrane electrodialysis process, obtaining concentrated produced water with the lithium content of 10-16 g / L in the concentration chamber, and obtaining desalted produced water in the desalting chamber; and finally, returning the primary desalted produced water obtained in the desalting chamber to the electrodialysis lithium extraction process to be used for preparing the electrodialysis lithium extraction raw solution. The method is simple to operate, has the advantages of small occupied area, investment saving, low cost and the like, and can implement synchronization, complete recovery and zero discharge on the lithium and water quantities in the electrode discharge solution, thereby enhancing the resource utilization efficiency and lowering the electrodialysis lithium extraction operating cost.

The invention discloses a full-armor mud discharging pipe, a production method and a special device of the full-armor mud discharging pipe and belongs to the technical field of dredging engineering equipment. According to the technical scheme, the full-armor mud discharging pipe comprises a pipe body and a connecting and fastening layer combined to the outer side of the pipe body; the full-armor mud discharging pipe is characterized in that an inlet end joint pipe, tapered pipes and an outlet end joint pipe are sequentially assembled into a whole in an armored manner to form the pipe body and are each at least formed by combing an inner steel pipe layer and an outer steel pipe layer, and at least two annular locating and fastening rings are arranged on the outer side wall of each outer steel pipe layer; and each connecting and fastening layer is sequentially wrapped with a strengthened elastic material layer, a multi-layer steel fastening layer and an elastic material layer. Compared with the prior art, the full-armor mud discharging pipe, the production method and the special device have remarkable improvements and the prominent substantive distinguishing features that the technical scheme is reliable, the bending requirement for adjusting the direction of the mud discharging pipe is met, and the wear resistance of the full-armor mud discharging pipe can be close to that of a metal composite mud discharging pipe, and the use performance of the metal mud discharging pipe is improved comprehensively.